Document Operation (20)
C#: Dynamically Create, Load, and Save Excel Files via Stream
2024-12-30 07:36:00 Written by daisy zhangUsing stream operations in C#, developers can dynamically create, load, and save Excel files, enabling flexible and efficient data handling. This approach eliminates the need for physical file storage, improving application performance and responsiveness. Ideal for real-time data manipulation or environments with storage limitations, it streamlines data exchange and system integration. This article demonstrates how to create, load, modify, and save Excel files using streams in C# with Spire.XLS for .NET, offering agile and scalable data management solutions.
- Dynamically Create an Excel File and Save It to Stream
- Load and Read Excel Files from Stream with C#
- Modify an Excel File in Stream with 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
Dynamically Create an Excel File and Save It to Stream
Using Spire.XLS for .NET, developers can dynamically create Excel files in memory by initializing a Workbook object, populating it with data and formatting, and then saving the workbook to a stream using the Workbook.SaveToStream() method. This approach eliminates the need for physical file storage, enhancing both application performance and responsiveness.
Below are the steps for creating an Excel file and saving it to a stream with C#:
- Create an instance of the Workbook class to generate a new Excel workbook, which includes three default worksheets.
- Retrieve a specific worksheet using the Workbook.Worksheets[] property.
- Define the data to write to the worksheet, such as using a DataTable to organize the data.
- Insert the data into the worksheet using the Worksheet.InsertDataTable() method or the Worksheet.Range[].Value property for individual cell values.
- Format the worksheet cells, applying styles like colors, fonts, and borders, or adjusting column widths as needed.
- Save the workbook to a memory stream using the Workbook.SaveToStream() method. The stream can then be used for further processing, such as saving it to a file or transmitting it over a network.
- C#
using Spire.Xls;
using System.Data;
using System.Drawing;
namespace CreateExcelStream
{
class Program
{
static void Main(string[] args)
{
// Create a new workbook instance
Workbook workbook = new Workbook();
// Access the first worksheet in the workbook
Worksheet sheet = workbook.Worksheets[0];
// Create and populate a DataTable with sample data
DataTable dataTable = new DataTable("Data");
dataTable.Columns.Add("ID", typeof(int));
dataTable.Columns.Add("Name", typeof(string));
dataTable.Columns.Add("Age", typeof(int));
dataTable.Columns.Add("Country", typeof(string));
dataTable.Columns.Add("Salary ($)", typeof(decimal));
dataTable.Rows.Add(101, "John Smith", 28, "USA", 54000m);
dataTable.Rows.Add(102, "Maria Garcia", 34, "Spain", 65500m);
dataTable.Rows.Add(103, "Liam Johnson", 22, "Canada", 48000m);
dataTable.Rows.Add(104, "Emma Brown", 30, "Australia", 72300m);
dataTable.Rows.Add(105, "Wei Zhang", 40, "China", 58700m);
dataTable.Rows.Add(106, "Sofia Lopez", 26, "Mexico", 45200m);
// Insert data from the DataTable into the worksheet
sheet.InsertDataTable(dataTable, true, 1, 1);
// Format the worksheet
// Style the header row
sheet.Rows[0].Style.Color = Color.LightGreen;
sheet.Rows[0].Style.Font.FontName = "Arial";
sheet.Rows[0].Style.Font.Size = 12f;
sheet.Rows[0].BorderAround(); // Apply borders around the header row
sheet.Rows[0].Borders.Color = Color.Blue;
// Style the data rows
for (int i = 1; i < sheet.AllocatedRange.Rows.Count(); i++)
{
sheet.Rows[i].Style.Color = Color.LightGray;
sheet.Rows[i].Style.Font.FontName = "Arial";
sheet.Rows[i].Style.Font.Size = 11f;
}
// Adjust the column widths to fit the content
for (int j = 1; j <= sheet.AllocatedRange.Columns.Count(); j++)
{
sheet.AutoFitColumn(j);
}
// Save the workbook to a memory stream
MemoryStream stream = new MemoryStream();
workbook.SaveToStream(stream, FileFormat.Version2016);
// Write the stream content to a file
File.WriteAllBytes("output/CreateExcelByStream.xlsx", stream.ToArray());
// Release resources
workbook.Dispose();
}
}
}
Load and Read Excel Files from Stream with C#
Spire.XLS for .NET simplifies loading Excel files directly from a stream using the Workbook.LoadFromStream() method. Once the file is loaded, developers can easily access and read cell data, optimizing memory usage and enabling fast, flexible data processing without requiring file I/O operations.
The steps for loading and reading Excel files from streams with C# are as follows:
- Create a Workbook instance.
- Create a MemoryStream or FileStream object.
- Use the Workbook.LoadFromStream() method to load the Excel file from the stream into the workbook.
- Retrieve the first worksheet using the Workbook.Worksheets[] property.
- Loop through the rows and columns of the worksheet to extract the cell through the Worksheet.AllocatedRange[].Value property.
- Print the extracted data, or use the data for further operations.
- C#
using Spire.Xls;
namespace LoadExcelStream
{
class Program
{
static void Main(string[] args)
{
// Create an instance of the Workbook class
Workbook workbook = new Workbook();
// Create a memory stream
MemoryStream stream = new MemoryStream();
File.OpenRead("Sample.xlsx").CopyTo(stream);
// Load the Excel file from the stream
workbook.LoadFromStream(stream);
// Access the first worksheet in the workbook
Worksheet sheet = workbook.Worksheets[0];
// Initialize a list to store the data retrieved from the worksheet
List<List<string>> data = new List<List<string>>();
for (int i = 0; i < sheet.AllocatedRange.Rows.Count(); i++)
{
// Create a list to hold each row of data
List<string> lines = new List<string>();
for (int j = 0; j < sheet.AllocatedRange.Columns.Count(); j++)
{
// Retrieve the cell text and add it to the row
lines.Add(sheet.AllocatedRange[i + 1, j + 1].Text);
}
// Add the row to the data list
data.Add(lines);
}
// Print the retrieved data or use it for further operations
foreach (List<string> lines in data)
{
Console.WriteLine(string.Join(" | ", lines));
}
}
}
}
Modify an Excel File in Stream with C#
With Spire.XLS for .NET, developers can modify an Excel file in memory by first loading it into a Workbook object with the LoadFromStream() method. After making updates (such as changing cell values or formatting), the file can be saved back to a stream using the Workbook.SaveToStream() method. This approach allows seamless real-time changes without relying on physical storage.
Follow the steps below to modify Excel files in streams with C#:
- Create a Workbook instance to represent the Excel file.
- Create a MemoryStream or FileStream instance.
- Use the Workbook.LoadFromStream() to load the Excel file from the stream.
- Access the first worksheet through the Workbook.Worksheets[] property.
- Modify the header row and the data rows' styles (font, size, background color, etc.) through the properties in CellRange.Style.
- Autofit the columns to adjust their width based on the content using the Worksheet.AutoFitColumn() method.
- Save the changes to the stream using the Workbook.SaveToStream() method.
- C#
using Spire.Xls;
using System.Drawing;
namespace ModifyExcelStream
{
class Program
{
static void Main(string[] args)
{
// Create a new instance of the Workbook class
Workbook workbook = new Workbook();
// Create a memory stream
MemoryStream stream = new MemoryStream();
File.OpenRead("Sample.xlsx").CopyTo(stream);
// Load the Excel file from the stream
workbook.LoadFromStream(stream);
// Access the first worksheet in the workbook
Worksheet sheet = workbook.Worksheets[0];
// Modify the style of the header row
CellRange headerRow = sheet.AllocatedRange.Rows[0];
headerRow.Style.Font.FontName = "Times New Roman";
headerRow.Style.Font.Size = 12f;
headerRow.Style.Color = Color.LightBlue;
// Modify the style of the data rows
for (int i = 1; i < sheet.AllocatedRange.Rows.Count(); i++)
{
CellRange dataRow = sheet.AllocatedRange.Rows[i];
dataRow.Style.Font.FontName = "Arial";
dataRow.Style.Font.Size = 10f;
dataRow.Style.Color = Color.LightGray;
// Alternate row coloring (even rows)
if (i % 2 == 0)
{
dataRow.Style.Color = Color.LightSlateGray;
}
}
// Autofit columns to adjust their width based on content
for (int k = 1; k <= sheet.AllocatedRange.Columns.Count(); k++)
{
sheet.AutoFitColumn(k);
}
// Change the border color
sheet.AllocatedRange.Style.Borders.Color = Color.White;
// Save the modified workbook back to the stream
workbook.SaveToStream(stream);
// Write the stream content to a new file
File.WriteAllBytes("output/ModifyExcelByStream.xlsx", stream.ToArray());
// Release resources
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.
Document properties, also known as metadata, are a set of data that describe a document. In Excel, you can add built-in document properties such as author, title, and keywords to quickly locate and identify documents in a folder. Or you can also add custom properties to provide more information about the Excel document. In this article, you will learn how to programmatically add built-in and custom document properties to an Excel document using Spire.XLS for .NET.
- Add Built-in Document Properties in Excel in C# and VB.NET
- Add Custom Document Properties in Excel in C# and VB.NET
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
Add Built-in Document Properties in Excel in C# and VB.NET
Built-in document properties are basic information about a document such as title, subject, author, category, etc. The names of these properties are predefined that cannot be edited, but Spire.XLS for .NET allows you to set specific values for these properties. The following are the detailed steps.
- Create a Workbook object.
- Load a sample Excel document using Workbook.LoadFromFile() method.
- Get the built-in document properties of the document using Workbook.DocumentProperties property.
- Set specific document properties such as title, author, keywords and comments using the properties of BuiltInDocumentProperties class.
- Save the result document using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
namespace ExcelProperties
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook object
Workbook workbook = new Workbook();
//Load a sample Excel document
workbook.LoadFromFile("sample.xlsx");
//Set built-in document properties for the Excel workbook
workbook.DocumentProperties.Author = "E-iceblue Team";
workbook.DocumentProperties.Title = "Add Built-in Document Properties in Excel ";
workbook.DocumentProperties.Keywords = "Excel, Document Properties, C#, VB.NET";
workbook.DocumentProperties.Category = "Spire.XLS Demo";
workbook.DocumentProperties.Company = "E-iceblue";
workbook.DocumentProperties.Comments = "Document properties are details about a file that describe or identify it.";
//Save the result document
workbook.SaveToFile("ExcelProperties.xlsx", FileFormat.Version2013);
}
}
}
Add Custom Document Properties in Excel in C# and VB.NET
Custom document properties are additional properties that you can define for an Excel document. Spire.XLS for .NET allows you to add custom properties with specified names and values using ICustomDocumentProperties.Add() method. The following are the detailed steps.
- Create a Workbook object.
- Load a sample Excel document using Workbook.LoadFromFile() method.
- Get the custom document properties of the document using Workbook.CustomDocumentProperties property.
- Add custom document properties with different data types to the document using ICustomDocumentProperties.Add() method.
- Save the result document using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
using System;
namespace CustomExcelProperties
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook object
Workbook workbook = new Workbook();
//Load a sample Excel document
workbook.LoadFromFile("sample.xlsx");
//Add custom document properties to the document
workbook.CustomDocumentProperties.Add("_MarkAsFinal", true);
workbook.CustomDocumentProperties.Add("The Editor", "E-iceblue");
workbook.CustomDocumentProperties.Add("Phone Number", 12345678);
workbook.CustomDocumentProperties.Add("Document ID", 1);
workbook.CustomDocumentProperties.Add("Revision Date", DateTime.Now);
//Save the result document
workbook.SaveToFile("ExcelCustomProperties.xlsx", FileFormat.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.
Sometimes, we may get annoyed when we have to open many Excel files simultaneously. Merging Excel files of the same type or category can help us avoid the trouble and save us much time. This article will demonstrate how to merge Excel files into One in C# and VB.NET using Spire.XLS for .NET library.
- Merge Multiple Excel Workbooks into One in C# and VB.NET
- Merge Multiple Excel Worksheets into One in C# and VB.NET
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
Merge Multiple Excel Workbooks into One in C# and VB.NET
The following are the steps to merge multiple Excel workbooks into one:
- Create a string array from the Excel file paths.
- Initialize a Workbook object to create a new Excel workbook, and clear the default worksheets in the workbook using Workbook.Worksheets.Clear() method.
- Initialize another temporary Workbook object.
- Loop through the string array, load the current workbook into the temporary Workbook object using Workbook.LoadFromFile() method.
- loop through the worksheets in the current workbook, then copy each worksheet from the current workbook to the new workbook using Workbook.Worksheets.AddCopy() method.
- Save the new workbook to file using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
namespace MergeExcelFiles
{
class Program
{
static void Main(string[] args)
{
//Create a string array from Excel file paths
string[] inputFiles = new string[] { "April.xlsx", "May.xlsx", "June.xlsx" };
//Initialize a new Workbook object
Workbook newWorkbook = new Workbook();
//Clear the default worksheets
newWorkbook.Worksheets.Clear();
//Initialize another temporary Workbook object
Workbook tempWorkbook = new Workbook();
//Loop through the string array
foreach (string file in inputFiles)
{
//Load the current workbook
tempWorkbook.LoadFromFile(file);
//Loop through the worksheets in the current workbook
foreach (Worksheet sheet in tempWorkbook.Worksheets)
{
//Copy each worksheet from the current workbook to the new workbook
newWorkbook.Worksheets.AddCopy(sheet, WorksheetCopyType.CopyAll);
}
}
//Save the new workbook to file
newWorkbook.SaveToFile("MergeWorkbooks.xlsx", ExcelVersion.Version2013);
}
}
}
The input Excel workbooks:
The merged Excel workbook:
Merge Multiple Excel Worksheets into One in C# and VB.NET
We can merge multiple worksheets in the same or different workbooks into one. The following steps show how to merge two Excel worksheets in the same workbook into a single worksheet:
- Initialize a Workbook object and load an Excel file using Workbook.LoadFromFile() method.
- Get the two worksheets that need to be merged using Workbook.Worksheets[sheetIndex] property. Note the sheet index is zero-based.
- Get the used range of the second worksheet using Worksheet.AllocatedRange property.
- Specify the destination range in the first worksheet using Worksheet.Range[rowIndex, columnIndex] property. Note the row and column indexes are 1-based.
- Copy the used range of the second worksheet to the destination range in the first worksheet using CellRange.Copy(destRange) method.
- Remove the second worksheet using XlsWorksheet.Remove() method.
- Save the result file using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
namespace MergeExcelWorksheets
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook object
Workbook workbook = new Workbook();
//Load an Excel file
workbook.LoadFromFile("Sample.xlsx");
//Get the first worksheet
Worksheet sheet1 = workbook.Worksheets[0];
//Get the second worksheet
Worksheet sheet2 = workbook.Worksheets[1];
//Get the used range in the second worksheet
CellRange sourceRange = sheet2.AllocatedRange;
//Specify the destination range in the first worksheet
CellRange destRange = sheet1.Range[sheet1.LastRow + 1, 1];
//Copy the used range of the second worksheet to the destination range in the first worksheet
sourceRange.Copy(destRange);
//Remove the second worksheet
sheet2.Remove();
//Save the result file
workbook.SaveToFile("MergeWorksheets.xlsx", ExcelVersion.Version2013);
}
}
}
The input Excel worksheets:
The merged Excel worksheets:
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.
Excel spreadsheet is a widely used file format that enables users to organize, analyze, and present data in a tabular format. The ability to interact with Excel files programmatically is highly valuable, as it allows automation and integration of Excel functionality into software applications. This capability is particularly useful when working with large datasets, performing complex calculations, or when data needs to be dynamically generated or updated. In this article, you will learn how to create, read, or update Excel documents in C# and VB.NET using Spire.XLS for .NET.
- Create an Excel File in C#, VB.NET
- Read Data of a Worksheet in C#, VB.NET
- Update an Excel File in C#, VB.NET
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 an Excel File in C#, VB.NET
Spire.XLS for .NET offers a variety of classes and interfaces that you can use to create and edit Excel documents. Here is a list of important classes, properties and methods involved in this article.
| Member | Description |
| Workbook class | Represents an Excel workbook model. |
| Workbook.Worksheets.Add() method | Adds a worksheet to workbook. |
| Workbook.SaveToFile() method | Saves the workbook to an Excel document. |
| Worksheet class | Represents a worksheet in a workbook. |
| Worksheet.Range property | Gets a specific cell or cell range from worksheet. |
| Worksheet.Range.Value property | Gets or sets the value of a cell. |
| Worksheet.Rows property | Gets a collection of rows in worksheet. |
| Worksheet.InsertDataTable() method | Imports data from DataTable to worksheet. |
| CellRange class | Represents a cell or cell range in worksheet. |
The following are the steps to create an Excel document from scratch using Spire.XLS for .NET.
- Create a Workbook object.
- Add a worksheet using Workbook.Worksheets.Add() method.
- Write data to a specific cell through Worksheet.Range.Value property.
- Import data from a DataTable to the worksheet using Worksheet.InsertDataTable() method.
- Save the workbook to an Excel document using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
using System.Data;
namespace CreateExcelSpreadsheet
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook object
Workbook wb = new Workbook();
//Remove default worksheets
wb.Worksheets.Clear();
//Add a worksheet and name it "Employee"
Worksheet sheet = wb.Worksheets.Add("Employee");
//Merge the cells between A1 and G1
sheet.Range["A1:G1"].Merge();
//Write data to A1 and apply formatting to it
sheet.Range["A1"].Value = "Basic Information of Employees of Huanyu Automobile Company";
sheet.Range["A1"].HorizontalAlignment = HorizontalAlignType.Center;
sheet.Range["A1"].VerticalAlignment = VerticalAlignType.Center;
sheet.Range["A1"].Style.Font.IsBold = true;
sheet.Range["A1"].Style.Font.Size = 13F;
//Set row height of the first row
sheet.Rows[0].RowHeight = 30F;
//Create a DataTable
DataTable dt = new DataTable();
dt.Columns.Add("Name");
dt.Columns.Add("Gender");
dt.Columns.Add("Birth Date");
dt.Columns.Add("Educational Background");
dt.Columns.Add("Contact Number");
dt.Columns.Add("Position");
dt.Columns.Add("ID");
dt.Rows.Add("Allen", "Male", "1990-02-10", "Bachelor", "24756854", "Mechanic", "0021");
dt.Rows.Add("Patrick", "Male", "1985-06-08", "Master", "59863247", "Mechanic", "0022");
dt.Rows.Add("Jenna", "Female", "1989-11-25", "Bachelor", "79540352", "Sales", "0023");
dt.Rows.Add("Tommy", "Male", "1988-04-16", "Master", "52014060", "Mechanic", "0024");
dt.Rows.Add("Christina", "Female", "1998-01-21", "Bachelor", "35401489", "HR", "0025");
//Import data from DataTable to worksheet
sheet.InsertDataTable(dt, true, 2, 1, true);
//Set row height of a range
sheet.Range["A2:G7"].RowHeight = 15F;
//Set column width
sheet.Range["A2:G7"].Columns[2].ColumnWidth = 15F;
sheet.Range["A2:G7"].Columns[3].ColumnWidth = 21F;
sheet.Range["A2:G7"].Columns[4].ColumnWidth = 15F;
//Set border style of a range
sheet.Range["A2:G7"].BorderAround(LineStyleType.Medium);
sheet.Range["A2:G7"].BorderInside(LineStyleType.Thin);
sheet.Range["A2:G2"].BorderAround(LineStyleType.Medium);
sheet.Range["A2:G7"].Borders.KnownColor = ExcelColors.Black;
//Save to a .xlsx file
wb.SaveToFile("NewSpreadsheet.xlsx", FileFormat.Version2016);
}
}
}
Read Data of a Worksheet in C#, VB.NET
The Worksheet.Range.Value property returns number value or text value of a cell as a string. To get data of a whole worksheet or a cell range, loop through the cells within it. The following are the steps to get data of a worksheet using Spire.XLS for .NET.
- Create a Workbook object.
- Load an Excel document using Workbook.LoadFromFile() method.
- Get a specific worksheet through Workbook.Worksheets[index] property.
- Get the cell range containing data though Worksheet.AllocatedRange property.
- Iterate through the rows and columns to get cells within the range, and return the value of each cell through CellRange.Value property.
- C#
- VB.NET
using Spire.Xls;
namespace ReadExcelData
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook object
Workbook wb = new Workbook();
//Load an existing Excel file
wb.LoadFromFile(@"C:\Users\Administrator\Desktop\NewSpreadsheet.xlsx");
//Get the first worksheet
Worksheet sheet = wb.Worksheets[0];
//Get the cell range containing data
CellRange locatedRange = sheet.AllocatedRange;
//Iterate through the rows
for (int i = 0;i < locatedRange.Rows.Length;i++)
{
//Iterate through the columns
for (int j = 0; j < locatedRange.Rows[i].ColumnCount; j++)
{
//Get data of a specific cell
Console.Write(locatedRange[i + 1, j + 1].Value + " ");
}
Console.WriteLine();
}
}
}
}
Update an Excel Document in C#, VB.NET
To change the value of a certain cell, just re-assign a value to it through Worksheet.Range.Value property. The following are the detailed steps.
- Create a Workbook object.
- Load an Excel document using Workbook.LoadFromFile() method.
- Get a specific worksheet through Workbook.Worksheets[index] property.
- Change the value of a particular cell though Worksheet.Range.Value property.
- Save the workbook to an Excel file using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
namespace UpdateCellValue
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook object
Workbook wb = new Workbook();
//Load an existing Excel file
wb.LoadFromFile(@"C:\Users\Administrator\Desktop\NewSpreadsheet.xlsx");
//Get the first worksheet
Worksheet sheet = wb.Worksheets[0];
//Change the value of a specific cell
sheet.Range["A1"].Value = "Updated Value";
//Save to file
wb.SaveToFile("Updated.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.
By running VBA within the Office applications, developers/programmers can build customized solutions and programs to enhance the capabilities of those applications. The VBA function of Excel is very powerful. Below I will show you how to use VBA by Spire.XLS.
VBA is the acronym for VB.NET for Applications. It is an implementation of Microsoft's event-driven programming language VB.NET 6 and its associated integrated development environment (IDE), which are built into most Microsoft Office applications. VBA is closely related to VB.NET and uses the VB.NET Runtime Library, but can normally only run code within a host application rather than as a standalone program. It can be used to control one application from another via OLE Automation.
Spire.XLS for .NET is a professional Excel .NET component that can be linked into any type of .NET 2.0, 3.5 or 4.0 projects, either ASP.NET web sites or Windows Forms application. Spire.XLS for .NET offers a combination of APIs and GUI controls for speeding up Excel programming in .NET platform-create new Excel documents from scratch, edit existing Excel documents and convert Excel files. At the same time, Spire.XLS supports VBA and it can load/Save Excel VBA.
Here comes to the steps:
- Write a template with VBA program with which you can execute your work in Excel.
- Create another workbook to load the VBA template.
In this demo, it generates a new worksheet named "test" with the VBA template we provide.
Please check the codes as below:
using Spire.Xls;
namespace NumberFormat
{
class Program
{
static void Main(string[] args)
{
//Create a workbook
Workbook workbook = new Workbook();
//Initailize worksheet
workbook.LoadFromFile("VBASample.xls");
Worksheet sheet = workbook.Worksheets[0];
//VBA function
sheet.Range["A1"].Text = "test";
//Save the file
workbook.SaveToFile("Sample.xls",ExcelVersion.Version97to2003);
//Launch the file
System.Diagnostics.Process.Start("Sample.xls");
}
}
}
Imports Spire.Xls
Module Module1
Sub Main()
'Create a workbook
Dim workbook As New Workbook()
'Initailize worksheet
workbook.LoadFromFile("VBASample.xls")
Dim sheet As Worksheet = workbook.Worksheets(0)
'VBA function
sheet.Range("A1").Text = "test"
'Save doc file.
workbook.SaveToFile("Sample.xls",ExcelVersion.Version97to2003)
'Launching the MS Word file.
System.Diagnostics.Process.Start("Sample.xls")
End Sub
End Module
Automation of an Excel file allows us to doing various operations in C#/VB.NET. Any loss in these operations may result in unexpected negative consequences for developers and the clients of the developers. That means we must find a solution that enables us to Save Excel with no loss in quality of our operations. This section will demonstrate how to fast save Excel file with perfect performance as directly operations in Excel files.
Spire.Xls for .NET is a professional component that enables developers directly manages Excel operation regardless whether Microsoft Excel is installed on or not. With Spire.Xls for .NET, we can save Excel to what we want it to be. Any kind of trial and evaluation on Spire.Xls for .NET is always welcomed; so now please feel free to download Spire.Xls for .NET and then follow our guide to save perfect Excel or try other function of Spire.Xls for .NET.
Spire.Xls for .NET allows us to create a new Excel file, write data in to it, edit the input data and then save Excel file.
using Spire.Xls;
namespace Excel_save
{
class Program
{
static void Main(string[] args)
{
//Create a new workbook
Workbook workbook = new Workbook();
//Initialize worksheet
Worksheet sheet = workbook.Worksheets[0];
//Append text
sheet.Range["A1"].Text = "Demo: Save Excel in .NET";
//Save it as Excel file
workbook.SaveToFile("Sample.xls",ExcelVersion.Version97to2003);
//Launch the file
System.Diagnostics.Process.Start(workbook.FileName);
}
}
}
Imports Spire.Xls
Namespace Excel_save
Class Program
Private Shared Sub Main(args As String())
'Create a new workbook
Dim workbook As New Workbook()
'Initialize worksheet
Dim sheet As Worksheet = workbook.Worksheets(0)
'Append text
sheet.Range("A1").Text = "Demo: Save Excel in .NET"
'Save it as Excel file
workbook.SaveToFile("Sample.xls",ExcelVersion.Version97to2003)
'Launch the file
System.Diagnostics.Process.Start(workbook.FileName)
End Sub
End Class
End Namespace
