.NET (1317)
Children categories
When the data in specific rows or columns are no longer needed, you can delete those rows or columns from your worksheet. In this article, you will learn how to delete rows and columns from Excel in C# and VB.NET using Spire.XLS for .NET library.
Install Spire.XLS for.NET
To begin with, you need to add the DLL files included in the Spire.XLS for.NET package as references in your .NET project. The DLLs files can be either downloaded from this link or installed via NuGet.
PM> Install-Package Spire.XLS
Delete a Specific Row and Column from Excel in C# and VB.NET
The following are the steps to delete a specific row and column from an Excel worksheet:
- Create a Workbook instance.
- Load an Excel file using Workbook.LoadFromFile() method.
- Get the desired worksheet using Workbook.Worksheets[sheetIndex] property.
- Delete the desired row from the worksheet by its index (1-based) using Worksheet.DeleteRow(rowIndex) method.
- Delete the desired column from the worksheet by its index (1-based) using Worksheet.DeleteColumn(columnIndex) method.
- Save the result file using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
namespace DeleteRowAndColumn
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook instance
Workbook workbook = new Workbook();
//Load an Excel file
workbook.LoadFromFile("Sample.xlsx");
//Get the first worksheet
Worksheet sheet = workbook.Worksheets[0];
//Delete the 9th row
sheet.DeleteRow(9);
//Delete the 3rd column
sheet.DeleteColumn(3);
//Save the result file
workbook.SaveToFile("DeleteRowAndColumn.xlsx", ExcelVersion.Version2016);
}
}
}
Delete Multiple Rows and Columns from Excel in C# and VB.NET
The following are the steps to delete multiple rows and columns from an Excel worksheet:
- Create a Workbook instance.
- Load an Excel file using Workbook.LoadFromFile() method.
- Get the desired worksheet using Workbook.Worksheets[sheetIndex] property.
- Delete the desired rows from the worksheet using Worksheet.DeleteRow(startRowIndex, rowCount) method.
- Delete the desired columns from the worksheet using Worksheet.DeleteColumn(startColumnIndex, columnCount) method.
- Save the result file using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
namespace DeleteMultipleRowsAndColumns
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook instance
Workbook workbook = new Workbook();
//Load an Excel file
workbook.LoadFromFile(@"Sample.xlsx");
//Get the first worksheet
Worksheet sheet = workbook.Worksheets[0];
//Delete 3 rows from the worksheet starting from the 7th row
sheet.DeleteRow(7, 3);
//Delete 3 columns from the worksheet starting from the 3rd column
sheet.DeleteColumn(3, 3);
//Save the result file
workbook.SaveToFile("DeleteMultipleRowsAndColumns.xlsx", ExcelVersion.Version2016);
}
}
}
Apply for a Temporary License
If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.
When dealing with Excel files containing large amounts of data, you may sometimes need to hide certain rows and columns to conceal useless data so that you can focus on the information you need to analyze. In this article, you will learn how to hide or show rows and columns in Excel in C# and VB.NET using Spire.XLS for .NET.
- Hide Specific Rows and Columns in Excel
- Show Specific Hidden Rows and Columns in Excel
- Hide Multiple Rows and Columns at Once in Excel
- Show All Hidden Rows and Columns in Excel
Install Spire.XLS for .NET
To begin with, you need to add the DLL files included in the Spire.XLS for .NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.
PM> Install-Package Spire.XLS
Hide Specific Rows and Columns in Excel in C# and VB.NET
The following steps demonstrate how to hide specific rows and columns in Excel in C# and VB.NET:
- Initialize an instance of the Workbook class.
- Load an Excel file using Workbook.LoadFromFile() method.
- Get a specific worksheet through Workbook.Worksheets[int sheetIndex] property.
- Hide specific rows in the worksheet using Worksheet.HideRow(int rowIndex) method.
- Hide Specific columns in the worksheet using Worksheet.HideColumn(int columnIndex) method.
- Save the result file using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
namespace HideExcelRowsAndColumns
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook instance
Workbook workbook = new Workbook();
//Load an Excel file
workbook.LoadFromFile("Input.xlsx");
//Get the first worksheet
Worksheet sheet = workbook.Worksheets[0];
//Hide the 3rd and the 7th rows
sheet.HideRow(3);
sheet.HideRow(7);
//Hide the 3rd and the 6th columns
sheet.HideColumn(3);
sheet.HideColumn(6);
//Save the result file
workbook.SaveToFile("HideRowsAndColumns.xlsx", ExcelVersion.Version2013);
}
}
}
Show Specific Hidden Rows and Columns in Excel in C# and VB.NET
The following steps demonstrate how to show specific hidden rows and columns in Excel in C# and VB.NET:
- Initialize an instance of the Workbook class.
- Load an Excel file using Workbook.LoadFromFile() method.
- Get a specific worksheet through Workbook.Worksheets[int sheetIndex] property.
- Show specific hidden rows in the worksheet using Worksheet.ShowRow(int rowIndex) method.
- Show specific hidden columns in the worksheet using Worksheet.ShowColumn(int columnIndex) method.
- Save the result file using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
namespace ShowExcelRowsAndColumns
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook instance
Workbook workbook = new Workbook();
//Load an Excel file
workbook.LoadFromFile("HideRowsAndColumns.xlsx");
//Get the first worksheet
Worksheet sheet = workbook.Worksheets[0];
//Show the 3rd and the 7th rows
sheet.ShowRow(3);
sheet.ShowRow(7);
//Show the 3rd and the 6th columns
sheet.ShowColumn(3);
sheet.ShowColumn(6);
//Save the result file
workbook.SaveToFile("ShowRowsAndColumns.xlsx", ExcelVersion.Version2013);
}
}
}
Hide Multiple Rows and Columns at Once in Excel in C# and VB.NET
The following steps demonstrate how to hide multiple rows and columns at once in Excel in C# and VB.NET:
- Initialize an instance of the Workbook class.
- Load an Excel file using Workbook.LoadFromFile() method.
- Get a specific worksheet through Workbook.Worksheets[int sheetIndex] property.
- Hide multiple rows in the worksheet using Worksheet.HideRows(int rowIndex, int rowCount) method.
- Hide multiple columns in the worksheet using Worksheet.HideColumns(int columnIndex, int columnCount) method.
- Save the result file using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
namespace HideMultipleExcelRowsAndColumns
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook instance
Workbook workbook = new Workbook();
//Load an Excel file
workbook.LoadFromFile("Input.xlsx");
//Get the first worksheet
Worksheet sheet = workbook.Worksheets[0];
//Hide 3, 4 and 5 rows
sheet.HideRows(3, 3);
//Hide 5, 6 and 7 columns
sheet.HideColumns(5, 3);
//Save the result file
workbook.SaveToFile("HideMultipleRowsAndColumns.xlsx", ExcelVersion.Version2013);
}
}
}
Show All Hidden Rows and Columns in Excel in C# and VB.NET
The following steps demonstrate how to show all hidden rows and columns in Excel in C# and VB.NET:
- Initialize an instance of the Workbook class.
- Load an Excel file using Workbook.LoadFromFile() method.
- Get a specific worksheet through Workbook.Worksheets[int sheetIndex] property.
- Iterate through the rows in the worksheet and find the hidden rows using Worksheet.GetRowIsHide(int rowIndex) method.
- Show all hidden rows using Worksheet.ShowRow(int rowIndex) method.
- Iterate through the columns in the worksheet and find the hidden columns using Worksheet.GetColumnIsHide(int columnIndex) method.
- Show all hidden columns using Worksheet.ShowColumn(int columnIndex) method.
- Save the result file using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
namespace ShowAllHiddenRowsAndColumns
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook instance
Workbook workbook = new Workbook();
//Load an Excel file
workbook.LoadFromFile("HideRowsAndColumns.xlsx");
//Get the first worksheet
Worksheet sheet = workbook.Worksheets[0];
//Iterate through the rows in the worksheet
for (int i = 1; i <= sheet.LastRow; i++)
{
//Check if the current row is hidden
if (sheet.GetRowIsHide(i))
{
//Show the hidden row
sheet.ShowRow(i);
}
}
//Iterate through the columns in the worksheet
for (int j = 1; j <= sheet.LastRow; j++)
{
//Check if the current column is hidden
if (sheet.GetColumnIsHide(j))
{
//Show the hidden column
sheet.ShowColumn(j);
}
}
//Save the result file
workbook.SaveToFile("ShowAllHiddenRowsAndColumns.xlsx", ExcelVersion.Version2013);
}
}
}
Apply for a Temporary License
If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.
EPUB is a standard file format for publishing eBooks or other electronic documents. The content in an EPUB file is reflowable, which means that the content automatically adjusts itself to fit the screen it is being displayed on. People who want to publish their eBooks may need to convert their works stored in Word documents to EPUB files. In this article, you will learn how to programmatically achieve this task using Spire.Doc for .NET.
Install Spire.Doc for .NET
To begin with, you need to add the DLL files included in the Spire.Doc for .NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.
PM> Install-Package Spire.Doc
Convert Word to EPUB
The detailed steps are as follows:
- Create a Document instance.
- Load a sample Word document using Document.LoadFromFile() method.
- Save the document to EPUB using Document.SaveToFile() method.
- C#
- VB.NET
using Spire.Doc;
namespace WordtoEPUB
{
class Epub
{
static void Main(string[] args)
{
//Create a Document instance
Document document = new Document();
//Load a sample Word document
document.LoadFromFile("demo.docx");
//Convert the Word document to EPUB
document.SaveToFile("ToEpub.epub", FileFormat.EPub);
}
}
}
Convert Word to EPUB with a Cover Image
The detailed steps are as follows.
- Create a Document instance.
- Load a sample Word document using Document.LoadFromFile() method.
- Create a DocPicture instance, and then load an image using DocPicture.LoadImage() method.
- Save the Word document to EPUB with cover image using Document.SaveToEpub(String, DocPicture) method.
- C#
- VB.NET
using Spire.Doc;
using Spire.Doc.Fields;
using System.Drawing;
namespace ConvertWordToEpubWithCoverImage
{
class Program
{
static void Main(string[] args)
{
//Create a Document instance
Document doc = new Document();
//Load a sample Word document
doc.LoadFromFile("demo.docx");
//Create a DocPicture instance
DocPicture picture = new DocPicture(doc);
//Load an image
picture.LoadImage(Image.FromFile("CoverImage.png"));
//Save the Word document to EPUB with cover image
doc.SaveToEpub("ToEpubWithCoverImage.epub", picture);
}
}
}
Apply for a Temporary License
If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.
This section aims at providing developers a solution on how to insert Excel background image in C#, VB.NET via a .NET Excel library Spire.XLS for .NET.
Spire.XLS for .NET enables you to add background image in your Excel file by setting BackgroundImage property of the object PageSetup to be the image you want to insert, you can see the code here: Spire.Xls.Worksheet.PageSetup.BackgroundImage. Now let us start our task.
Task:
If you are not familiar with Spire.XLS for .NET, please allow me to give a short description of it. Spire.XLS for .NET is an Excel application which enables users to perform a wide range of processing tasks in Excel documents such as generate, edit and handle Excel files in C#.
You will use Spire.XLS for .NET, so we can download Spire.XLS for .NET first. After installing it on system, please start your project either in C# Console Application or VB.NET Console Application. You also can create your project in Windows Forms Application. Please do not forget to add Spire.Xls as reference. The default path is “..\Spire.XLS\Bin\Bin\NET4.0\ Spire.XLS.dll”. Below shows the whole code of my project:
using Spire.Xls;
using System.Drawing;
namespace InsertExcelBackgroundImage
{
class Program
{
static void Main(string[] args)
{
//initialize a new instance of Workbook
Workbook workbook = new Workbook();
//import an Excel file from system
workbook.LoadFromFile(@"..\Excel background image.xlsx");
//get the first worksheet
Worksheet sheet = workbook.Worksheets[0];
//open an image
Bitmap bm = new Bitmap(Image.FromFile(@"..\butterflytable.jpg"));
//set the image to be background image of the worksheet
sheet.PageSetup.BackgoundImage = bm;
//save excel file
workbook.SaveToFile("result.xlsx", ExcelVersion.Version2010);
//launch the file
System.Diagnostics.Process.Start("result.xlsx");
}
}
}
Imports Spire.Xls
Imports System.Drawing
Namespace InsertExcelBackgroundImage
Class Program
Private Shared Sub Main(args As String())
'initialize a new instance of Workbook
Dim workbook As New Workbook()
'import an Excel file from system
workbook.LoadFromFile("..\Excel background image.xlsx")
'get the first worksheet
Dim sheet As Worksheet = workbook.Worksheets(0)
'open an image
Dim bm As New Bitmap(Image.FromFile("..\butterflytable.jpg"))
'set the image to be background image of the worksheet
sheet.PageSetup.BackgoundImage = bm
'save excel file
workbook.SaveToFile("result.xlsx", ExcelVersion.Version2010)
'launch the file
System.Diagnostics.Process.Start("result.xlsx")
End Sub
End Class
End Namespace
Output File:
After executing above code, I successfully add background image in Excel file, you can see the output file as below:
In this section, I have introduced the detail solution on how to insert background image in Excel file with C#, VB.NET. I wish it can help you. If you have any questions, comments or advice, you can add it at E-iceblue Forum, our professionals will give prompt reply.
The purpose of creating dropdown lists in an Excel document is to provide a convenient way for data input, restricting users to select only from predefined options. This helps prevent input errors and ensures data accuracy. With dropdown lists, users can choose from a fixed list of options without the need to manually enter data, thereby reducing the possibility of input errors. This article will introduce how to use Spire.XLS for .NET to create dropdown lists in Excel documents within a C# project.
- Create Dropdown List using String Array in C#
- Create Dropdown List using Data from the Same Worksheet in C#
- Create Dropdown List using Data from Different Worksheets in C#
- Create Linked Dropdown Lists in the Same Worksheet in C#
- Create Linked Dropdown Lists across Different Worksheets in C#
Install Spire.XLS for .NET
To begin with, you need to add the DLL files included in the Spire.XLS for .NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.
PM> Install-Package Spire.XLS
Create Dropdown List using String Array in C#
Using Spire.XLS, you can easily create dropdown lists in cells by assigning a string array to the CellRange.DataValidation.Values property. Here are the detailed steps:
- Create a Workbook object.
- Use Workbook.Worksheets[0] to get the first worksheet in the workbook.
- Create a string array and assign it to the CellRange.DataValidation.Values property.
- Save the document to a specified path using the Workbook.SaveToFile() method.
- C#
using Spire.Xls;
namespace SpireXlsDemo
{
internal class Program
{
static void Main(string[] args)
{
// Create a Workbook object
Workbook workbook = new Workbook();
// Get the first Worksheet in the Workbook object
Worksheet worksheet = workbook.Worksheets[0];
// Create a string array
string[] values = new string[] { "Apple", "Banana", "Orange", "Strawberry", "Grape" };
// Set data validation in cell A1 of the worksheet, restricting selectable values to those in the values array
worksheet.Range["A1"].DataValidation.Values = values;
// Save the Workbook object as an Excel file
workbook.SaveToFile("DropdownListCreatedFromArray.xlsx", ExcelVersion.Version2016);
// Dispose of the resources occupied by the Workbook object
workbook.Dispose();
}
}
}
Create Dropdown List using Data from the Same Worksheet in C#
The following example demonstrates creating a dropdown list in the worksheet where the data is located by specifying the data range and applying it to the corresponding cell. Here are the detailed steps:
- Create a Workbook object.
- Load an Excel document using the Workbook.LoadFromFile() method.
- Access the first worksheet in the workbook using Workbook.Worksheets[0].
- Get the data range using Worksheet.Range[""].
- Specify cell B1 as a dropdown list and set the data range using Worksheet.Range["B1"].DataValidation.DataRange.
- Save the document to a specified path using the Workbook.SaveToFile() method.
- C#
using Spire.Xls;
namespace SpireXlsDemo
{
internal class Program
{
static void Main(string[] args)
{
// Create a new workbook object
Workbook workbook = new Workbook();
// Load workbook data from a file
workbook.LoadFromFile("Sample1.xlsx");
// Get the first worksheet in the workbook
Worksheet worksheet = workbook.Worksheets[0];
// Get the cell range from A3 to A8 in the worksheet
CellRange dataRange = worksheet.Range["A3:A8"];
// Set cell B1 as a dropdown with data range obtained earlier
worksheet.Range["B1"].DataValidation.DataRange = dataRange;
// Save the workbook to a new file
workbook.SaveToFile("CreateDropdownInSameWorksheet.xlsx", ExcelVersion.Version2016);
// Dispose of the workbook resources
workbook.Dispose();
}
}
}
Create Dropdown List using Data from Different Worksheets in C#
This example demonstrates how to specify a data range in one worksheet and apply it to a specific cell in another worksheet. In this process, it is necessary to ensure that Worksheet.ParentWorkbook.Allow3DRangesInDataValidation = true is set to enable the functionality of creating dropdown lists across different worksheets. Here are the detailed steps:
- Create a Workbook object.
- Load an Excel document using the Workbook.LoadFromFile() method.
- Retrieve a specific worksheet from the workbook using Workbook.Worksheets[].
- Set Worksheet.ParentWorkbook.Allow3DRangesInDataValidation = true to enable the use of 3D ranges in data validation within the worksheet.
- Use CellRange.DataValidation.DataRange to specify a cell as a dropdown list and set the data range.
- Save the document to a specified path using the Workbook.SaveToFile() method.
- C#
using Spire.Xls;
namespace SpireXlsDemo
{
internal class Program
{
static void Main(string[] args)
{
// Create a Workbook object
Workbook workbook = new Workbook();
// Load the workbook from a file
workbook.LoadFromFile("Sample2.xlsx");
// Get the first worksheet
Worksheet worksheet1 = workbook.Worksheets[0];
// Get the second worksheet
Worksheet worksheet2 = workbook.Worksheets[1];
// Allow the use of 3D ranges in data validation
worksheet1.ParentWorkbook.Allow3DRangesInDataValidation = true;
// Define the data range
CellRange dataRange = worksheet2.Range["A1:A6"];
// Apply the data range to cell B1 in worksheet 1 as data validation
worksheet1.Range["B1"].DataValidation.DataRange = dataRange;
// Save the workbook to a file
workbook.SaveToFile("Create the Dropdowns Across Different Worksheets.xlsx", ExcelVersion.Version2016);
// Release the resources of the workbook
workbook.Dispose();
}
}
}
Create Linked Dropdown Lists in the Same Worksheet in C#
Linked dropdown menus refer to the automatic updating of options in one dropdown menu based on the selection made in another dropdown menu. This example demonstrates how to create linked dropdown lists (dropdown menus) functionality within the same worksheet. This is achieved by adding an INameRange object and setting the reference range, as well as setting the data range and formula for data validation to achieve the linked dropdown effect. Here are the detailed steps:
- Create a Workbook object.
- Load an Excel document using the Workbook.LoadFromFile() method.
- Retrieve a specific worksheet from the workbook using Workbook.Worksheets[].
- Add an INamedRange object and set the reference range.
- Set Worksheet.ParentWorkbook.Allow3DRangesInDataValidation = true to enable the use of 3D ranges in data validation within the worksheet.
- Use CellRange.DataValidation.DataRange to specify a cell as a dropdown box and set the data range.
- Set CellRange.DataValidation.AllowType = CellDataType.User to specify the data validation type for cells in the worksheet as user-defined.
- Set CellRange.DataValidation.Formula1 = "=INDIRECT(SUBSTITUTE(A2,\" \",\"_\"))", which means that the data validation for this cell will dynamically select the data range based on the value in the cell.
- Save the document to a specified path using the Workbook.SaveToFile() method.
- C#
using Spire.Xls;
namespace SpireXlsDemo
{
internal class Program
{
static void Main(string[] args)
{
// Create a new workbook object
Workbook workbook = new Workbook();
// Load the workbook from a file
workbook.LoadFromFile("Sample3.xlsx");
// Get the first worksheet
Worksheet worksheet1 = workbook.Worksheets[0];
// Get the second worksheet
Worksheet worksheet2 = workbook.Worksheets[1];
// Add named range objects and set reference ranges
Spire.Xls.Core.INamedRange namedRange = workbook.NameRanges.Add(worksheet2.Range["A1"].Text);
namedRange.RefersToRange = worksheet2.Range["B2:B6"];
namedRange = workbook.NameRanges.Add(worksheet2.Range["A2"].Text.Replace(" ", "_"));
namedRange.RefersToRange = worksheet2.Range["C2:C6"];
namedRange = workbook.NameRanges.Add(worksheet2.Range["A3"].Text);
namedRange.RefersToRange = worksheet2.Range["D2:D6"];
namedRange = workbook.NameRanges.Add(worksheet2.Range["A4"].Text);
namedRange.RefersToRange = worksheet2.Range["E2:E6"];
namedRange = workbook.NameRanges.Add(worksheet2.Range["A5"].Text);
namedRange.RefersToRange = worksheet2.Range["F2:F6"];
// Allow 3D ranges in data validation
worksheet1.ParentWorkbook.Allow3DRangesInDataValidation = true;
// Set the data range for data validation
worksheet1.Range["A2"].DataValidation.DataRange = worksheet2.Range["A1:A5"];
worksheet1.Range["B2"].DataValidation.AllowType = CellDataType.User;
// Set the formula
worksheet1.Range["B2"].DataValidation.Formula1 = "=INDIRECT(SUBSTITUTE(A2,\" \",\"_\"))";
// Save the workbook to a file
workbook.SaveToFile("Linked Dropdowns in the Same Worksheet.xlsx", ExcelVersion.Version2016);
// Dispose of the workbook resources
workbook.Dispose();
}
}
}
Create Linked Dropdown Lists across Different Worksheets in C#
This example demonstrates how to implement linked dropdown lists between different worksheets in an Excel document. By adding an INameRange object and setting the reference range, you can set the data validation range in the first worksheet and set the cell formula in the second worksheet to achieve the linked dropdown effect. Here are the detailed steps:
- Create a Workbook object.
- Load an Excel document using the Workbook.LoadFromFile() method.
- Retrieve a specific worksheet from the workbook using Workbook.Worksheets[].
- Add an INamedRange object and set the reference range.
- Set Worksheet.ParentWorkbook.Allow3DRangesInDataValidation = true to enable data validation using 3D ranges in the worksheet.
- Set the data validation range using CellRange.DataValidation.DataRange.
- Set the formula in a cell in the second worksheet using CellRange.Formula = "=INDIRECT(" + worksheet1.Name + "!B1)" to indirectly reference the value of a cell in the first worksheet.
- Save the document to a specified path using the Workbook.SaveToFile() method.
- C#
using Spire.Xls;
namespace SpireXlsDemo
{
internal class Program
{
static void Main(string[] args)
{
// Create a Workbook object
Workbook workbook = new Workbook();
// Load the workbook from a file
workbook.LoadFromFile("Sample4.xlsx");
// Get the first worksheet
Worksheet worksheet1 = workbook.Worksheets[0];
// Get the second worksheet
Worksheet worksheet2 = workbook.Worksheets[1];
// Get the data worksheet
Worksheet dataSheet = workbook.Worksheets[2];
// Add a named range object and set the reference range
Spire.Xls.Core.INamedRange namedRange = workbook.NameRanges.Add(dataSheet.Range["A2"].Text);
namedRange.RefersToRange = dataSheet.Range["B2"];
namedRange = workbook.NameRanges.Add(dataSheet.Range["A3"].Text);
namedRange.RefersToRange = dataSheet.Range["B3"];
namedRange = workbook.NameRanges.Add(dataSheet.Range["A4"].Text);
namedRange.RefersToRange = dataSheet.Range["B4"];
// Allow 3D ranges in data validation
worksheet1.ParentWorkbook.Allow3DRangesInDataValidation = true;
// Set the data range for data validation
worksheet1.Range["B1"].DataValidation.DataRange = dataSheet.Range["A2:A4"];
// Set the formula for cell B1 in the second worksheet
worksheet2.Range["B1"].Formula = "=INDIRECT(" + worksheet1.Name + "!B1)";
// Save the workbook to a file
workbook.SaveToFile("Creating Linked Dropdowns Across Different Worksheets.xlsx", ExcelVersion.Version2016);
// Release the resources of the workbook
workbook.Dispose();
}
}
}
Apply for a Temporary License
If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.
This section is designed to provide a solution for developers on how to delete PDF page for WPF via this PDF library Spire.PDF for WPF.
Spire.PDF for WPF enables users to delete any PDF page only by one line of code: RemoveAt(int index). As you see, there is only one parameter in this method. This parameter determines which page will be deleted in PDF file. Now let us see the whole task in detail.
Delete PDF Page for WPF
Step 1: Prepare a template PDF File
I pick a PDF file from my system and it has 73 pages, we can see it below:
Step 2: Download and Install Spire.PDF for WPF
Spire.PDF for WPF is a PDF component applied in WPF applications. It enables developers to create, read, edit and handle PDF files with fast speed. Here you can download Spire.PDF for WPF. After installing it on system, Spire.PDF for WPF will run in evaluation mode. This evaluation mode has no time limit and has no bad influence on performing the task.
Step 3: Start a new Project and Add References
Start your Visual Studio and create a new project in Visual C# WPF Application or VB。NET WPF Application. Here is an example of Visual C# in WPF Application. Please do not forget to add a button in the MainWindow.
We will use Spire.PDF for WPF, so we have to add Spire.Pdf for Wdf.dll and Spire.License.dll in our project in Bin folder. The detail Path is "..\Spire.Pdf\Bin\WPF4.0\ Spire.Pdf.Wpf.dll".
Step 4: Delete PDF Page
Below is the complete code in my project:
//Initialize a new instance of PdfDocument
PdfDocument document = new PdfDocument();
//Open a template PDF file
document.LoadFromFile(@"..\Report.pdf");
//Remove the second Page
document.Pages.RemoveAt(1);
//Save the PDF file to disk
document.SaveToFile("DeletePDFPage.pdf");
//Launch the PDF file
System.Diagnostics.Process.Start("DeletePDFPage.pdf ");
'Initialize a new instance of PdfDocument
Dim document As New PdfDocument()
'Open a template PDF file
document.LoadFromFile("..\Report.pdf")
'Remove the second Page
document.Pages.RemoveAt(1)
'Save the PDF file to disk
document.SaveToFile("DeletePDFPage.pdf")
'Launch the PDF file
System.Diagnostics.Process.Start("DeletePDFPage.pdf ")
Output PDF File
After executing above code, the second page of the template PDF file has been deleted, and there are only 72 pages in the target PDF file, we can see here:
In this section, I have expounded the solution on how to delete PDF page in WPF application. I wish it can help you and give you some insight on your development.
Spire.PDF for WPF is a PDF component which is designed to meet customers’ requirements on programming with high efficiency and reliability.
We welcome any kind of queries, comments and advices at E-iceblue Forum. Our professionals will be there to give prompt reply.
Long papers or research reports are often completed collaboratively by multiple people. To save time, each person can work on their assigned parts in separate documents and then merge these documents into one after finish editing. Apart from manually copying and pasting content from one Word document to another, this article will demonstrate the following two ways to merge Word documents programmatically using Spire.Doc for .NET .
Install Spire.Doc for .NET
To begin with, you need to add the DLL files included in the Spire.Doc for.NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.
PM> Install-Package Spire.Doc
Merge Documents by Inserting the Entire File
The Document.InsertTextFromFile() method provided by Spire.Doc for .NET allows merging Word documents by inserting other documents entirely into a document. Using this method, the contents of the inserted document will start from a new page. The detailed steps are as follows:
- Create a Document instance.
- Load the original Word document using Document.LoadFromFile() method.
- Insert another Word document entirely to the original document using Document.InsertTextFromFile() method.
- Save the result document using Document.SaveToFile() method.
- C#
- VB.NET
using Spire.Doc;
namespace MergeWord
{
class Program
{
static void Main(string[] args)
{
//Create a Document instance
Document document = new Document();
//Load the original Word document
document.LoadFromFile("Doc1.docx", FileFormat.Docx);
//Insert another Word document entirely to the original document
document.InsertTextFromFile("Doc2.docx", FileFormat.Docx);
//Save the result document
document.SaveToFile("MergedWord.docx", FileFormat.Docx);
}
}
}
Merge Documents by Cloning Contents
If you want to merge documents without starting a new page, you can clone the contents of other documents to add to the end of the original document. The detailed steps are as follows:
- Load two Word documents.
- Loop through the second document to get all the sections using Document.Sections property, and then loop through all the sections to get their child objects using Section.Body.ChildObjects property.
- Get the last section of the first document using Document.LastSection property, and then add the child objects to the last section of the first document using LastSection.Body.ChildObjects.Add() method.
- Save the result document using Document.SaveToFile() method.
- C#
- VB.NET
using Spire.Doc;
namespace MergeWord
{
class Program
{
static void Main(string[] args)
{
//Load two Word documents
Document doc1 = new Document("Doc1.docx");
Document doc2 = new Document("Doc2.docx");
//Loop through the second document to get all the sections
foreach (Section section in doc2.Sections)
{
//Loop through the sections of the second document to get their child objects
foreach (DocumentObject obj in section.Body.ChildObjects)
{
// Get the last section of the first document
Section lastSection = doc1.LastSection;
//Add all child objects to the last section of the first document
lastSection.Body.ChildObjects.Add(obj.Clone());
}
}
// Save the result document
doc1.SaveToFile("MergeDocuments.docx", FileFormat.Docx);
}
}
}
Apply for a Temporary License
If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.
Extract Comments from Word Document and Save in TXT File in C#, VB.NET
2013-02-18 07:33:05 Written by KoohjiWord comments can be reviews or thoughts about part of contents or explanations or references of specified phrase, sentence or paragraph given by author. Also, the existing comments can be extracted from document and solution in this guide demonstrates how to extract Word comments and save to TXT file in C# and Visual Basic via Spire.Doc for .NET.
Spire.Doc for .NET, one easy-to-use .NET Word component to preform Word tasks, provides a Comment class to enable users to get comments in Word and paragraphs of comment body. The screenshot below shows the original documents with two comments.
Download and install Spire.Doc for .NET and follow the steps to extract Word comments. Firstly, initialize a StringBuilder instance to save extracted comments. Secondly, use a foreach statement to get all comments in Word and use another foreach statement to get each paragraph of body of each comment. Then, invoke StringBuilder.AppendLine method to append a copy of comment string followed by default line terminator to the end of the current StringBuilder object. The parameter passed to this method is string value which is comment paragraph text. Thirdly, invoke File.WrtieAllText method to create a new TXT file with comments text as contents. The parameters passed to this method are string path and string contents. Code as following:
using System.Text;
using System.IO;
using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
namespace ExtractComments
{
class Program
{
static void Main(string[] args)
{
//Load Document
Document doc = new Document();
doc.LoadFromFile(@"E:\Work\Document\A GOOD MAN IS HARD TO FIND.docx");
//Extract Comment
StringBuilder SB = new StringBuilder();
foreach(Comment comment in doc.Comments)
{
foreach (Paragraph p in comment.Body.Paragraphs)
{
SB.AppendLine(p.Text);
}
}
//Save to TXT File
File.WriteAllText("CommentExtraction.txt", SB.ToString());
System.Diagnostics.Process.Start("CommentExtraction.txt");
}
}
}
Imports System.Text
Imports System.IO
Imports Spire.Doc
Imports Spire.Doc.Documents
Imports Spire.Doc.Fields
Namespace ExtractComments
Friend Class Program
Shared Sub Main(ByVal args() As String)
'Load Document
Dim doc As New Document()
doc.LoadFromFile("E:\Work\Document\A GOOD MAN IS HARD TO FIND.docx")
'Extract Comment
Dim SB As New StringBuilder()
For Each comment As Comment In doc.Comments
For Each p As Paragraph In comment.Body.Paragraphs
SB.AppendLine(p.Text)
Next p
Next comment
'Save to TXT File
File.WriteAllText("CommentExtraction.txt", SB.ToString())
System.Diagnostics.Process.Start("CommentExtraction.txt")
End Sub
End Class
End Namespace
After debugging, the following result will be presented:
Spire.Doc, a professional Word component, enables developers/programmers to operate Word document, for example, generating, opening, saving and modifying on .NET, WPF and Silverlight applications
Bookmark is a helpful feature of PDF, especially for PDF documents with lots of pages. By clicking on a bookmark, the reader can jump to the corresponding location of the document quickly. A series of organized bookmarks can be used as contents as well. This article demonstrates how to get bookmarks from PDF documents using Spire.PDF for .NET.
Install Spire.PDF for .NET
To begin with, you need to add the DLL files included in the Spire.PDF for.NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.
PM> Install-Package Spire.PDF
Get the Bookmarks of a PDF Document
The detailed steps are as follows:
- Create a PdfDocument instance.
- Load a PDF document from disk using PdfDocument.LoadFromFile() method.
- Get bookmarks collection in the PDF document using PdfDocument.Bookmarks property.
- Get the bookmarks’ content and save to a TXT file using custom method GetBookmarks().
- C#
- VB.NET
using System;
using System.IO;
using System.Text;
using Spire.Pdf;
using Spire.Pdf.Bookmarks;
namespace GetBookmark
{
internal class Program
{
static void Main(string[] args)
{
//Create a PdfDocument instance
PdfDocument pdf = new PdfDocument();
//Load a PDF document from disk
pdf.LoadFromFile(@"D:\testp\test.pdf");
//Get bookmark collection of the Pdf document
PdfBookmarkCollection bookmarks = pdf.Bookmarks;
//Get the bookmarks and save them to a TXT file
String result = "GetPdfBookmarks.txt";
GetBookmarks(bookmarks, result);
}
public static void GetBookmarks(PdfBookmarkCollection bookmarks, string result)
{
//Create an object of StringBuilder
StringBuilder content = new StringBuilder();
//Get PDF bookmarks’ information
if (bookmarks.Count > 0)
{
content.AppendLine("Pdf bookmarks:");
foreach (PdfBookmark parentBookmark in bookmarks)
{
//Get the title
content.AppendLine(parentBookmark.Title);
//Get the text style
string textStyle = parentBookmark.DisplayStyle.ToString();
content.AppendLine(textStyle);
GetChildBookmark(parentBookmark, content);
}
}
//Save to a TXT file
File.WriteAllText(result, content.ToString());
}
public static void GetChildBookmark(PdfBookmark parentBookmark, StringBuilder content)
{
if (parentBookmark.Count > 0)
{
foreach (PdfBookmark childBookmark in parentBookmark)
{
//Get the title
content.AppendLine(childBookmark.Title);
//Get the text style
string textStyle = childBookmark.DisplayStyle.ToString();
content.AppendLine(textStyle);
GetChildBookmark(childBookmark, content);
}
}
}
}
}
Apply for a Temporary License
If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.
PDF bookmarks are navigational aids that allow users to quickly locate and jump to specific sections or pages in a PDF document. Through a simple click, users can arrive at the target location, which eliminates the need to manually scroll or search for specific content in a lengthy document. In this article, you will learn how to programmatically add, modify and remove bookmarks in PDF using Spire.PDF for .NET.
- Add Bookmarks to a PDF Document
- Edit Bookmarks in a PDF Document
- Delete Bookmarks from a PDF Document
Install Spire.PDF for .NET
To begin with, you need to add the DLL files included in the Spire.PDF for.NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.
PM> Install-Package Spire.PDF
Add Bookmarks to a PDF Document in C# and VB.NET
Spire.PDF for .NET provides the PdfDocument.Bookmarks.Add() method to add bookmarks to a PDF document. After a bookmark is created, you can also use the PdfBookmark.Add() method to add sub-bookmarks for it. The following are the detailed steps.
- Create a PdfDocument object.
- Load a sample PDF file using PdfDocument.LoadFromFile() method.
- Loop through all pages in the PDF file to add bookmarks and set their styles.
- Add a parent bookmark to the document using PdfDocument.Bookmarks.Add() method.
- Create a PdfDestination object and set the destination of the parent bookmark using PdfBookmark.Action property.
- Set the text color and style of the parent bookmark.
- Add a sub-bookmark to the parent bookmark using PdfBookmark.Add() method.
- Set the destination, text color, and text style of the sub-bookmark.
- Save the result document using PdfDocument.SaveToFile() method.
- C#
- VB.NET
using System.Drawing;
using Spire.Pdf;
using Spire.Pdf.Graphics;
using Spire.Pdf.Actions;
using Spire.Pdf.Bookmarks;
using Spire.Pdf.General;
namespace AddBookmark
{
class Program
{
static void Main(string[] args)
{
//Create a PdfDocument object
PdfDocument pdf = new PdfDocument();
//Load a sample PDF file
pdf.LoadFromFile("template.pdf");
//Loop through the pages in the PDF file
for (int i = 0; i < pdf.Pages.Count; i++)
{
PdfPageBase page = pdf.Pages[i];
//Add a bookmark
PdfBookmark bookmark = pdf.Bookmarks.Add(string.Format("Bookmark-{0}", i + 1));
//Set the destination page and location of the bookmark
PdfDestination destination = new PdfDestination(page, new PointF(0, 0));
bookmark.Action = new PdfGoToAction(destination);
//Set the text color and style of the bookmark
bookmark.Color = new PdfRGBColor(Color.Black);
bookmark.DisplayStyle = PdfTextStyle.Bold;
//Add a child bookmark
PdfBookmark childBookmark = bookmark.Add(string.Format("Sub-Bookmark-{0}", i + 1));
//Set the destination page and location of the child bookmark
PdfDestination childDestination = new PdfDestination(page, new PointF(0, 100));
childBookmark.Action = new PdfGoToAction(childDestination);
//Set the text color and style of the child bookmark
childBookmark.Color = new PdfRGBColor(Color.Brown);
childBookmark.DisplayStyle = PdfTextStyle.Italic;
}
// Save the result file
pdf.SaveToFile("AddBookmarks.pdf");
}
}
}
Edit Bookmarks in a PDF Document in C# and VB.NET
If you need to update the existing bookmarks, you can use the methods of PdfBookmark class to rename the bookmarks and change their text color, text style. The following are the detailed steps.
- Create a PdfDocument object.
- Load a sample PDF file using PdfDocument.LoadFromFile() method.
- Get a specified bookmark using PdfDocument.Bookmarks[] property.
- Change the title of the bookmark using PdfBookmark.Title property.
- Change the font color of the bookmark using PdfBookmark.Color property.
- Change the text style of the bookmark using PdfBookmark.DisplayStyle property.
- Change the text color and style of the sub-bookmark using the above methods.
- Save the result document using PdfDocument.SaveToFile() method.
- C#
- VB.NET
using Spire.Pdf;
using Spire.Pdf.Bookmarks;
using System.Drawing;
namespace ModifyBookmarks
{
class Program
{
static void Main(string[] args)
{
//Create a PdfDocument object
PdfDocument pdf = new PdfDocument();
//Load a sample PDF file
pdf.LoadFromFile("AddBookmarks.Pdf");
//Get the first bookmark
PdfBookmark bookmark = pdf.Bookmarks[0];
//Change the title of the bookmark
bookmark.Title = "Modified BookMark";
//Change text color and style of the bookmark
bookmark.Color = Color.Red;
bookmark.DisplayStyle = PdfTextStyle.Italic;
//Edit sub-bookmarks of the first bookmark
foreach (PdfBookmark childBookmark in bookmark)
{
childBookmark.Color = Color.Blue;
childBookmark.DisplayStyle = PdfTextStyle.Bold;
}
//Save the result file
pdf.SaveToFile("EditBookmarks.Pdf");
}
}
}
Delete Bookmarks from a PDF Document in C# and VB.NET
Spire.PDF for .NET allows to remove a specified bookmark as well as all bookmarks in a PDF file. Furthermore, removing only a specified sub-bookmark can also be achieved. The following are the detailed steps.
- Create a PdfDocument object.
- Load a sample PDF file using PdfDocument.LoadFromFile() method.
- Get the first bookmark using PdfDocument.Bookmarks[] property.
- Remove a specified sub-bookmark of the first bookmark using PdfBookmark.RemoveAt() method.
- Remove a specified bookmark including its sub-bookmarks using PdfDocument.Bookmarks.RemoveAt() method. Or you can remove all bookmarks in the PDF file using PdfDocument.Bookmarks.Clear() method.
- Save the document using PdfDocument.saveToFile() method.
- C#
- VB.NET
using Spire.Pdf;
using Spire.Pdf.Bookmarks;
namespace DeleteBookmarks
{
class Program
{
static void Main(string[] args)
{
//Create a PdfDocument object
PdfDocument pdf = new PdfDocument();
//Load a sample PDF file
pdf.LoadFromFile("AddBookmarks.Pdf");
//Get the first bookmark
PdfBookmark bookmark = pdf.Bookmarks[0];
//Delete the first sub-bookmark of the first bookmark
bookmark.RemoveAt(0);
//Delete the second bookmark including its sub-bookmarks
pdf.Bookmarks.RemoveAt(1);
//Delete all bookmarks
//pdf.Bookmarks.Clear();
//Save the result file
pdf.SaveToFile("DeleteBookmarks.pdf");
}
}
}
Apply for a Temporary License
If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.
