How to Create a Nested Table in Word in C#
A nested table is one table placed inside of another, where the larger table functions as a container for the smaller one. Nested tables allow you to arrange different sets of data in groups to show clients.
This article presents how we can create a nested table using Spire.Doc in C#.
Step 1: Create a new PDF document and add a section to it.
Document doc = new Document(); Section section = doc.AddSection();
Step 2: Add a table to the section.
Table table = section.AddTable(true); table.ResetCells(2, 3);
Step 3: Adjust the column with.
table.Rows[0].Cells[0].Width = table.Rows[0].Cells[2].Width = 50F; table.Rows[1].Cells[0].Width = table.Rows[1].Cells[2].Width = 50F; table.AutoFitBehavior(AutoFitBehaviorType.wdAutoFitWindow);
Step 4: Insert content to the cells of the table.
table[0, 0].AddParagraph().AppendText("SI.No.");
string text = "Earthwork excavation for foundation of buildings, water supply, "
+ "sanitary lines and electrical conduits either in pits or in "
+ "trenches 1.5m and above in width, in ordinary soil not exceeding "
+ "1.5m in depth including dressing the bottom and sides of pits and "
+ "trenches, stacking the excavated soil clear.";
table[0, 1].AddParagraph().AppendText(text);
table[0, 2].AddParagraph().AppendText("Qty");
Step 5: Insert a nested table to the cell (first row, second column).
Table nestedTable= table[0, 1].AddTable(true); nestedTable.ResetCells(3, 4); nestedTable.AutoFitBehavior(AutoFitBehaviorType.wdAutoFitContents);
Step 6: Add content to nested cells.
nestedTable[0, 0].AddParagraph().AppendText("SI.No.");
nestedTable[0, 1].AddParagraph().AppendText("Item");
nestedTable[0, 2].AddParagraph().AppendText("Qty");
nestedTable[0, 3].AddParagraph().AppendText("Rate");
nestedTable[1, 0].AddParagraph().AppendText("1");
nestedTable[1, 1].AddParagraph().AppendText("Sand");
nestedTable[1, 2].AddParagraph().AppendText("30");
nestedTable[1, 3].AddParagraph().AppendText("45");
nestedTable[2, 0].AddParagraph().AppendText("2");
nestedTable[2, 1].AddParagraph().AppendText("Cement");
nestedTable[2, 2].AddParagraph().AppendText("30");
nestedTable[2, 3].AddParagraph().AppendText("50");
Step 7: Save the file.
doc.SaveToFile("Nested_Table.docx", FileFormat.Docx2013);
Output:
Full Code:
//create a new pdf document
Document doc = new Document();
Section section = doc.AddSection();
//add a table
Table table = section.AddTable(true);
table.ResetCells(2, 3);
//set column width
table.Rows[0].Cells[0].SetCellWidth(50F,CellWidthType.Point);
table.Rows[0].Cells[2].SetCellWidth(50F, CellWidthType.Point);
table.Rows[1].Cells[0].SetCellWidth(50F, CellWidthType.Point);
table.Rows[1].Cells[2].SetCellWidth(50F, CellWidthType.Point);
table.AutoFit(AutoFitBehaviorType.AutoFitToWindow);
nestedTable.AutoFit(AutoFitBehaviorType.AutoFitToContents);
//insert content to cells
table[0, 0].AddParagraph().AppendText("SI.No.");
string text = "Earthwork excavation for foundation of buildings, water supply, "
+ "sanitary lines and electrical conduits either in pits or in "
+ "trenches 1.5m and above in width, in ordinary soil not exceeding "
+ "1.5m in depth including dressing the bottom and sides of pits and "
+ "trenches, stacking the excavated soil clear.";
table[0, 1].AddParagraph().AppendText(text);
table[0, 2].AddParagraph().AppendText("Qty");
//add a nested table to cell(first row, second column)
Table nestedTable= table[0, 1].AddTable(true);
nestedTable.ResetCells(3, 4);
nestedTable.AutoFitBehavior(AutoFitBehaviorType.wdAutoFitContents);
//add content to nested cells
nestedTable[0, 0].AddParagraph().AppendText("SI.No.");
nestedTable[0, 1].AddParagraph().AppendText("Item");
nestedTable[0, 2].AddParagraph().AppendText("Qty");
nestedTable[0, 3].AddParagraph().AppendText("Rate");
nestedTable[1, 0].AddParagraph().AppendText("1");
nestedTable[1, 1].AddParagraph().AppendText("Sand");
nestedTable[1, 2].AddParagraph().AppendText("30");
nestedTable[1, 3].AddParagraph().AppendText("45");
nestedTable[2, 0].AddParagraph().AppendText("2");
nestedTable[2, 1].AddParagraph().AppendText("Cement");
nestedTable[2, 2].AddParagraph().AppendText("30");
nestedTable[2, 3].AddParagraph().AppendText("50");
//save
doc.SaveToFile("Nested_Table.docx", FileFormat.Docx2013);
Lock Specified Sections of Word Documents in C#, VB.NET
Section protection allows users to be able to edit only the forms (if any) rather than any other content within it. When we protect a document, we can specify that the specific sections of the document be protected. This is useful in case we want to protect parts of a Word document.
Following code snippets demonstrate the same.
Step 1: Initialize an instance of Document class.
Document doc = new Document();
Step 2: Add two sections to the document.
Section s1 = doc.AddSection(); Section s2 = doc.AddSection();
Step 3: Append some text to section 1 and section 2.
s1.AddParagraph().AppendText("section 1");
s2.AddParagraph().AppendText("section 2");
Step 4: Protect the document with AllowOnlyFormFields protection type.
doc.Protect(ProtectionType.AllowOnlyFormFields, "123");
Step 5: Unprotect section 2.
s2.ProtectForm = false;
Step 6: Save the document.
doc.SaveToFile("Protect_Section.docx");
Result:
Run the program, we should get the file in which section 1 is protected to allow only editing in form fields while section 2 can be edited freely.
Full Code:
using Spire.Doc;
namespace LockSection
{
class Program
{
static void Main(string[] args)
{
Document doc = new Document();
Section s1 = doc.AddSection();
Section s2 = doc.AddSection();
s1.AddParagraph().AppendText("section 1");
s2.AddParagraph().AppendText("section 2");
//protect all sections
doc.Protect(ProtectionType.AllowOnlyFormFields, "123");
//unprotect section 2
s2.ProtectForm = false;
doc.SaveToFile("Protect_Section.docx");
}
}
}
Imports Spire.Doc
Namespace LockSection
Class Program
Private Shared Sub Main(args As String())
Dim doc As New Document()
Dim s1 As Section = doc.AddSection()
Dim s2 As Section = doc.AddSection()
s1.AddParagraph().AppendText("section 1")
s2.AddParagraph().AppendText("section 2")
'protect all sections
doc.Protect(ProtectionType.AllowOnlyFormFields, "123")
'unprotect section 2
s2.ProtectForm = False
doc.SaveToFile("Protect_Section.docx")
End Sub
End Class
End Namespace
Fill XFA Form Fields in C#/VB.NET
XFA forms are XML-based forms created by Adobe's LiveCycle Designer tool, which offer enhanced features over the old AcroForms, like changeable text fields and support for running JavaScript. Spire.PDF supports to access the XFA forms in an existing PDF file and fill the fields with data.
Step 1: Initialize an instance of PdfDocument class and load a sample PDF file containing dynamic XFA forms.
PdfDocument doc = new PdfDocument();
doc.LoadFromFile("DynamicXFA.pdf");
Step 2: Get all form widgets from the document.
PdfFormWidget formWidget = doc.Form as PdfFormWidget;
Step 3: Get a list of XFA Fields.
ListXfaField> xfafields = formWidget.XFAForm.XfaFields;"
Step 4: Traverse each XfaField in the list and judge if it is an XfaTextField, if yes, convert the type of XfaField as an XfaTextField and then assign value to the field based on the field name.
foreach (XfaField xfaField in xfaFields)
{
if (xfaField is XfaTextField)
{
XfaTextField xf = xfaField as XfaTextField;
switch (xfaField.Name)
{
case "EmployeeName":
xf.Value = "Gary";
break;
case "Address":
xf.Value = "Chengdu, China";
break;
case "StateProv":
xf.Value = "Sichuan Province";
break;
case "ZipCode":
xf.Value = "610093";
break;
case "SSNumber":
xf.Value = "000-00-0000";
break;
case "HomePhone":
xf.Value = "86-028-81705109";
break;
case "CellPhone":
xf.Value = "123456789";
break;
case "Comments":
xf.Value = "This demo shows how to fill XFA forms using Spire.PDF";
break;
default:
break;
}
}
}
Step 5: Save the file.
doc.SaveToFile("FillXfaField.pdf",FileFormat.PDF);
Output:
Full Code:
using Spire.Pdf;
using Spire.Pdf.Widget;
using System.Collections;
using System.Collections.Generic;
namespace FillXFAFormFields
{
class Program
{
private static IEnumerable xfaFields;
static void Main(string[] args)
{
PdfDocument doc = new PdfDocument();
doc.LoadFromFile("DynamicXFA.pdf");
PdfFormWidget formWidget = doc.Form as PdfFormWidget;
List xfafields = formWidget.XFAForm.XfaFields;
foreach (XfaField xfaField in xfafields)
{
if (xfaField is XfaTextField)
{
XfaTextField xf = xfaField as XfaTextField;
switch (xfaField.Name)
{
case "EmployeeName":
xf.Value = "Gary";
break;
case "Address":
xf.Value = "Chengdu, China";
break;
case "StateProv":
xf.Value = "Sichuan Province";
break;
case "ZipCode":
xf.Value = "610093";
break;
case "SSNumber":
xf.Value = "000-00-0000";
break;
case "HomePhone":
xf.Value = "86-028-81705109";
break;
case "CellPhone":
xf.Value = "123456789";
break;
case "Comments":
xf.Value = "This demo shows how to fill XFA forms using Spire.PDF";
break;
default:
break;
}
}
}
doc.SaveToFile("FillXfaField.pdf", FileFormat.PDF);
}
}
}
Imports Spire.Pdf
Imports Spire.Pdf.Widget
Imports System.Collections.Generic
Namespace FillXFAFormFields
Class Program
Private Shared xfaFields As IEnumerable(Of XfaField)
Private Shared Sub Main(args As String())
Dim doc As New PdfDocument()
doc.LoadFromFile("DynamicXFA.pdf")
Dim formWidget As PdfFormWidget = TryCast(doc.Form, PdfFormWidget)
Dim xfafields__1 As List(Of XfaField) = formWidget.XFAForm.XfaFields
For Each xfaField As XfaField In xfaFields
If TypeOf xfaField Is XfaTextField Then
Dim xf As XfaTextField = TryCast(xfaField, XfaTextField)
Select Case xfaField.Name
Case "EmployeeName"
xf.Value = "Gary"
Exit Select
Case "Address"
xf.Value = "Chengdu, China"
Exit Select
Case "StateProv"
xf.Value = "Sichuan Province"
Exit Select
Case "ZipCode"
xf.Value = "610093"
Exit Select
Case "SSNumber"
xf.Value = "000-00-0000"
Exit Select
Case "HomePhone"
xf.Value = "86-028-81705109"
Exit Select
Case "CellPhone"
xf.Value = "123456789"
Exit Select
Case "Comments"
xf.Value = "This demo shows how to fill XFA forms using Spire.PDF"
Exit Select
Case Else
Exit Select
End Select
End If
Next
doc.SaveToFile("FillXfaField.pdf", FileFormat.PDF)
End Sub
End Class
End Namespace
How to Delete Rows and Columns from a Word Table in C#, VB.NET
Adding rows and columns are common tasks in Word table processing, on the contrary, sometimes we also have the requirement of deleting rows or columns from a table. This article demonstrates how to delete a row and a column from an existing Word table using Spire.Doc.
Below is the screenshot of the original table. Afterwards, we will remove the colored row and column from the table.
Detail steps:
Step 1: Instantiate a Document object and load the Word document.
Document doc = new Document();
doc.LoadFromFile("Sample.docx");
Step 2: Get the table from the document.
Table table = doc.Sections[0].Tables[0] as Table;
Step 3: Delete the third row from the table.
table.Rows.RemoveAt(2);
Step 4: Delete the third column from the table.
for (int i = 0; i < table.Rows.Count; i++)
{
table.Rows[i].Cells.RemoveAt(2);
}
Step 5: Save the document.
doc.SaveToFile("result.docx", FileFormat.Docx2013);
Output:
Full code:
using Spire.Doc;
namespace Delete_Rows_and_Columns
{
class Program
{
static void Main(string[] args)
{
Document doc = new Document();
doc.LoadFromFile("Sample.docx");
Table table = doc.Sections[0].Tables[0] as Table;
table.Rows.RemoveAt(2);
for (int i = 0; i < table.Rows.Count; i++)
{
table.Rows[i].Cells.RemoveAt(2);
}
doc.SaveToFile("result.docx", FileFormat.Docx2013);
}
}
}
Imports Spire.Doc
Namespace Delete_Rows_and_Columns
Class Program
Private Shared Sub Main(args As String())
Dim doc As New Document()
doc.LoadFromFile("Sample.docx")
Dim table As Table = TryCast(doc.Sections(0).Tables(0), Table)
table.Rows.RemoveAt(2)
For i As Integer = 0 To table.Rows.Count - 1
table.Rows(i).Cells.RemoveAt(2)
Next
doc.SaveToFile("result.docx", FileFormat.Docx2013);
End Sub
End Class
End Namespace
How to keep high quality image when convert XPS to PDF in C#
We have already had an article of showing how to convert the XPS files into PDF file. Starts from Spire.PDF V3.8.68, it newly supports to keep the high quality image on the resulted PDF file from the XPS document. Spire.PDF offers a property of pdf.UseHighQualityImage to set the image quality before loading the original XPS file. This article will focus on demonstrate how to save image with high quality for the conversion from XPS to PDF.
Here comes to the code snippets:
Step 1: Create a PDF instance.
PdfDocument pdf = new PdfDocument();
Step 2: Set the value of UseHighQualityImage as true to use the high quality image when convert XPS to PDF.
pdf.ConvertOptions.SetXpsToPdfOptions(true);
Step 3: Load the XPS document by use either the method of pdf.LoadFromFile() or pdf.LoadFromXPS().
pdf.LoadFromFile("Sample.xps",FileFormat.XPS);
Step 4: Save the document to file.
pdf.SaveToFile("result.pdf");
Effective screenshot of the high quality image after saving XPS as PDF file format:
Full codes:
using Spire.Pdf;
namespace ConvertXPStoPDF
{
class Program
{
static void Main(string[] args)
{
PdfDocument pdf = new PdfDocument();
pdf.ConvertOptions.SetXpsToPdfOptions(true);
pdf.LoadFromFile("Sample.xps", FileFormat.XPS);
//pdf.LoadFromXPS("Sample.xps");
pdf.SaveToFile("result.pdf", FileFormat.PDF);
}
}
}
C#: Get Coordinates of Text or an Image in PDF
Getting the coordinates of text or an image in a PDF is a useful task that allows precise referencing and manipulation of specific elements within the document. By extracting the coordinates, one can accurately identify the position of text or images on each page. This information proves valuable for tasks like data extraction, text recognition, or highlighting specific areas. This article introduces how to get the coordinate information of text or an image in a PDF document in C# 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. You can download Spire.PDF for .NET from our website or install it directly through NuGet.
PM> Install-Package Spire.PDF
Get Coordinates of Text in PDF in C#
The PdfTextFinder.Find() method provided by Spire.PDF can help us find all instances of the string to be searched in a searchable PDF document. The coordinate information of a specific instance can be obtained through the PdfTextFragment.Positions property. The following are the step to get the (X, Y) coordinates of the specified text in a PDF using Spire.PDF for .NET.
- Create a PdfDocument object.
- Load a PDF file using PdfDocument.LoadFromFile() method.
- Loop through the pages in the document.
- Create a PdfTextFinder object, and get all instances of the specified text from a page using PdfTextFinder.Find() method.
- Loop through the find results and get the coordinate information of a specific result through PdfTextFragment.Positions property.
- C#
using Spire.Pdf;
using Spire.Pdf.Texts;
using System.Collections.Generic;
using System;
using System.Drawing;
namespace GetCoordinatesOfText
{
class Program
{
static void Main(string[] args)
{
//Create a PdfDocument object
PdfDocument doc = new PdfDocument();
//Load a PDF file
doc.LoadFromFile("C:\\Users\\Administrator\\Desktop\\input.pdf");
//Loop through all pages
foreach (PdfPageBase page in doc.Pages)
{
//Create a PdfTextFinder object
PdfTextFinder finder = new PdfTextFinder(page);
//Set the find options
PdfTextFindOptions options = new PdfTextFindOptions();
options.Parameter = TextFindParameter.IgnoreCase;
finder.Options = options;
//Find all instances of a specific text
ListPdfTextFragment> fragments = finder.Find("target audience");
//Loop through the instances
foreach (PdfTextFragment fragment in fragments)
{
//Get the position of a specific instance
PointF found = fragment.Positions[0];
Console.WriteLine(found);
}
}
}
}
}
Get Coordinates of an Image in PDF in C#
Spire.PDF provides the PdfImageHelper.GetImagesInfo() method to help us get all image information on a specific page. The coordinate information of a specific image can be obtained through the PdfImageInfo.Bounds property. The following are the steps to get the coordinates of an image in a PDF document using Spire.PDF for .NET.
- Create a PdfDocument object.
- Load a PDF file using PdfDocument.LoadFromFile() method.
- Get a specific page through PdfDocument.Pages[index] property.
- Create a PdfImageHelper object, and get all image information from the page using PdfImageHelper.GetImageInfo() method.
- Get the coordinate information of a specific image through PdfImageInfo.Bounds property.
- C#
using Spire.Pdf;
using Spire.Pdf.Utilities;
namespace GetCoordinatesOfImage
{
class Program
{
static void Main(string[] args)
{
//Create a PdfDocument object
PdfDocument doc = new PdfDocument();
//Load a PDF file
doc.LoadFromFile("C:\\Users\\Administrator\\Desktop\\input.pdf");
//Get a specific page
PdfPageBase page = doc.Pages[0];
//Create a PdfImageHelper object
PdfImageHelper helper = new PdfImageHelper();
//Get image information from the page
PdfImageInfo[] images = helper.GetImagesInfo(page);
//Get X,Y coordinates of a specific image
float xPos = images[0].Bounds.X;
float yPos = images[0].Bounds.Y;
Console.WriteLine("The image is located at（{0},{1}）", xPos, yPos);
}
}
}
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.
C#: Get the Font Information in PDF
Get PDF font information is the process of extracting details about the fonts used in a PDF document. This information typically includes the font name, size, type, color, and other attributes. Knowing these details can help in ensuring consistency, copyright compliance, and aesthetics of the PDF document. In this article, you will learn how to get the font information in PDF in C# 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 Fonts of Specified Text in PDF in C#
With Spire.PDF for .NET, you can find specified text and get its font formatting such as font name, size, style and color through the corresponding properties of the PdfTextFragment class. The following are the detailed steps.
- Create a PdfDocument instance.
- Load a PDF file using PdfDocument.LoadFromFile() method.
- Get a specified page using PdfDocument.Pages[] property.
- Create a PdfTextFinder instance.
- Find the specified text using PdfTextFinder.Find() method and return a PdfTextFragment object.
- Create a StringBuilder instance to store information.
- Iterate through all found text.
- Get the found text using PdfTextFragment.Text property.
- Get the font name of the found text using PdfTextFragment.TextStates[0].FontName property.
- Get the font size of the found text using PdfTextFragment.TextStates[0].FontSize property.
- Get the font family of the found text using PdfTextFragment.TextStates[0].FontFamily property.
- Indicate whether the font is bold or faux bold (font style set to fill and stroke) using PdfTextFragment.TextStates[0].IsSimulateBold and PdfTextFragment.TextStates[0].IsItalic properties.
- Get the font color of the found text using PdfTextFragment.TextStates[0].ForegroundColor property.
- Append the font information to the StringBuilder instance using StringBuilder.AppendLine() method.
- Write to a txt file.
- C#
using Spire.Pdf;
using Spire.Pdf.Texts;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Text;
namespace GetTextFont
{
class Program
{
static void Main(string[] args)
{
// Create a PdfDocument instance
PdfDocument pdf = new PdfDocument();
// Load a PDF file
pdf.LoadFromFile("NET Framework.pdf");
// Get the first page
PdfPageBase page = pdf.Pages[0];
// Create a PdfTextFinder instance
PdfTextFinder finds = new PdfTextFinder(page);
// Find specified text on the page
finds.Options.Parameter = TextFindParameter.None;
ListPdfTextFragment> result = finds.Find(".NET Framework");
// Create a StringBuilder instance
StringBuilder str = new StringBuilder();
// Iterate through all found text
foreach (PdfTextFragment find in result)
{
// Get the found text
string text = find.Text;
// Get the font name
string FontName = find.TextStates[0].FontName;
// Get the font size
float FontSize = find.TextStates[0].FontSize;
// Get the font family
string FontFamily = find.TextStates[0].FontFamily;
// Indicate whether the font is bold or italic
bool IsBold = find.TextStates[0].IsBold;
bool IsSimulateBold = find.TextStates[0].IsSimulateBold;
bool IsItalic = find.TextStates[0].IsItalic;
// Get the font color
Color color = find.TextStates[0].ForegroundColor;
// Append the font information to the StringBuilder instance
str.AppendLine(text);
str.AppendLine("FontName: " + FontName);
str.AppendLine("FontSize: " + FontSize);
str.AppendLine("FontFamily: " + FontFamily);
str.AppendLine("IsBold: " + IsBold);
str.AppendLine("IsSimulateBold: " + IsSimulateBold);
str.AppendLine("IsItalic: " + IsItalic);
str.AppendLine("color: " + color);
str.AppendLine(" ");
}
// Write to a txt file
File.WriteAllText("PdfFont.txt", str.ToString());
}
}
}
Get the Used Fonts in PDF in C#
Spire.PDF for .NET also provides the PdfUsedFont class to represent the fonts used in a PDF document. To get the formatting of all used fonts, you can iterate through each font and retrieve its font name, size, type and style using the corresponding properties of the PdfUsedFont class. The following are the detailed steps.
- Create a PdfDocument instance.
- Load a PDF file using PdfDocument.LoadFromFile() method.
- Get all the fonts used in the PDF file using PdfDocument.UsedFonts property.
- Create a StringBuilder instance to store information.
- Iterate through the used fonts.
- Get the font name using PdfUsedFont.Name property.
- Get the font size using PdfUsedFont.Size property.
- Get the font type using PdfUsedFont.Type property.
- Get the font style using PdfUsedFont.Style property.
- Append the font information to the StringBuilder instance using StringBuilder.AppendLine() method.
- Write to a txt file
- C#
using Spire.Pdf;
using Spire.Pdf.Graphics;
using Spire.Pdf.Graphics.Fonts;
using System.IO;
using System.Text;
namespace GetPdfFont
{
class Program
{
static void Main(string[] args)
{
// Create a PdfDocument instance
PdfDocument pdf = new PdfDocument();
// Load a PDF file
pdf.LoadFromFile("NET Framework.pdf");
// Get the used fonts in the PDF file
PdfUsedFont[] fonts = pdf.UsedFonts;
// Create a StringBuilder instance
StringBuilder str = new StringBuilder();
// Iterate through the used fonts
foreach (PdfUsedFont font in fonts)
{
// Get the font name
string name = font.Name;
// Get the font size
float size = font.Size;
// Get the font type
PdfFontType type = font.Type;
// Get the font style
PdfFontStyle style = font.Style;
// Append the font information to the StringBuilder instance
str.AppendLine("FontName: " + name + " FontSize: " + size + " FontType: " + type + " FontStyle: " + style);
}
// Write to a txt file
File.WriteAllText("PdfFontInfo.txt", str.ToString());
}
}
}
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.
C#/VB.NET: Convert PDF to SVG
SVG (Scalable Vector Graphics) is an image file format used for rendering two-dimensional images on the web. Comparing with other image file formats, SVG has many advantages such as supporting interactivity and animation, allowing users to search, index, script, and compress/enlarge images without losing quality. Occasionally, you may need to convert PDF files to SVG file format, and this article will demonstrate how to accomplish this task using Spire.PDF for .NET.
- Convert a PDF File to SVG in C#/VB.NET
- Convert Selected PDF Pages to SVG in C#/VB.NET
- Convert a PDF File to SVG with Custom Width and Height in C#/VB.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 DLLs files can be either downloaded from this link or installed via NuGet.
PM> Install-Package Spire.PDF
Convert a PDF File to SVG in C#/VB.NET
Spire.PDF for .NET offers the PdfDocument.SaveToFile(String, FileFormat) method to convert each page in a PDF file to a single SVG file. The detailed steps are as follows.
- Create a PdfDocument object.
- Load a sample PDF file using PdfDocument.LoadFromFile() method.
- Convert the PDF file to SVG using PdfDocument.SaveToFile(String, FileFormat) method.
- C#
- VB.NET
using Spire.Pdf;
namespace ConvertPDFtoSVG
{
class Program
{
static void Main(string[] args)
{
//Create a PdfDocument object
PdfDocument document = new PdfDocument();
//Load a sample PDF file
document.LoadFromFile("input.pdf");
//Convert PDF to SVG
document.SaveToFile("PDFtoSVG.svg", FileFormat.SVG);
}
}
}
Convert Selected PDF Pages to SVG in C#/VB.NET
The PdfDocument.SaveToFile(String, Int32, Int32, FileFormat) method allows you to convert the specified pages in a PDF file to SVG files. The detailed steps are as follows.
- Create a PdfDocument object.
- Load a sample PDF file using PdfDocument.LoadFromFile() method.
- Convert selected PDF pages to SVG using PdfDocument.SaveToFile(String, Int32, Int32, FileFormat) method.
- C#
- VB.NET
using Spire.Pdf;
namespace PDFPagetoSVG
{
class Program
{
static void Main(string[] args)
{
//Create a PdfDocument object
PdfDocument doc = new PdfDocument();
//Load a sample PDF file
doc.LoadFromFile("input.pdf");
//Convert selected PDF pages to SVG
doc.SaveToFile("PDFPagetoSVG.svg", 1, 2, FileFormat.SVG);
}
}
}
Convert a PDF File to SVG with Custom Width and Height in C#/VB.NET
The PdfConvertOptions.SetPdfToSvgOptions() method offered by Spire.PDF for .NET allows you to specify the width and height of output SVG file. The detailed steps are as follows.
- Create a PdfDocument object.
- Load a sample PDF file using PdfDocument.LoadFromFile() method.
- Set PDF convert options using PdfDocument.ConvertOptions property.
- Specify the width and height of output SVG file using PdfConvertOptions.SetPdfToSvgOptions() method.
- Convert the PDF file to SVG using PdfDocument.SaveToFile() method.
- C#
- VB.NET
using Spire.Pdf;
namespace PDFtoSVG
{
class Program
{
static void Main(string[] args)
{
//Create a PdfDocument object
PdfDocument document = new PdfDocument();
//Load a sample PDF file
document.LoadFromFile("input.pdf");
//Specify the width and height of output SVG file
PdfToSvgConverter converter = new PdfToSvgConverter(inputFile);
converter.SvgOptions.ScaleX = (float)0.5;
converter.SvgOptions.ScaleY = (float)0.5;
converter.Convert(outputFile);
//Convert PDF to SVG
document.SaveToFile("result.svg", FileFormat.SVG);
}
}
}
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.
C#/VB.NET: Add Image Watermarks to PDF
An image watermark is usually a logo or sign that appears on the background of digital documents, indicating the copyright owner of the content. Watermarking your PDF document with an image can prevent your data from being reused or modified. This article demonstrates how to add an image watermark to PDF in C# and VB.NET 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 DLLs files can be either downloaded from this link or installed via NuGet.
- Package Manager
PM> Install-Package Spire.PDF
Add an Image Watermark to PDF
The following are the main steps to add an image watermark to a PDF document.
- Create a PdfDocument object, and load a sample PDF file using PdfDocument.LoadFromFile() method.
- Load an image file using Image.FromFile() method.
- Loop through the pages in the document, and get the specific page through PdfDocument.Pages[] property.
- Set the image as background/watermark image of the current page through PdfPageBase.BackgroundImage property. Set the image position and size through PdfPageBase.BackgroundRegion property.
- Save the document to a different PDF file using PdfDocument.SaveToFile() method.
- C#
- VB.NET
using Spire.Pdf;
using System.Drawing;
namespace AddImageWatermark
{
class Program
{
static void Main(string[] args)
{
//Create a PdfDocument object
PdfDocument document = new PdfDocument();
//Load a sample PDF document
document.LoadFromFile(@"C:\Users\Administrator\Desktop\sample.pdf");
//Load an image
Image image = Image.FromFile(@"C:\Users\Administrator\Desktop\logo.png");
//Get the image width and height
int imgWidth = image.Width;
int imgHeight = image.Height;
//Loop through the pages
for (int i = 0; i < document.Pages.Count; i++)
{
//Get the page width and height
float pageWidth = document.Pages[i].ActualSize.Width;
float pageHeight = document.Pages[i].ActualSize.Height;
//Set the background opacity
document.Pages[i].BackgroudOpacity = 0.3f;
//Set the background image of current page
document.Pages[i].BackgroundImage = image;
//Position the background image at the center of the page
Rectangle rect = new Rectangle((int)(pageWidth - imgWidth) / 2, (int)(pageHeight - imgHeight) / 2, imgWidth, imgHeight);
document.Pages[i].BackgroundRegion = rect;
}
//Save the document to file
document.SaveToFile("AddImageWatermark.pdf");
document.Close();
}
}
}
Imports Spire.Pdf
Imports System.Drawing
Namespace AddImageWatermark
Class Program
Shared Sub Main(ByVal args() As String)
'Create a PdfDocument object
Dim document As PdfDocument = New PdfDocument()
'Load a sample PDF document
document.LoadFromFile("C:\Users\Administrator\Desktop\sample.pdf")
'Load an image
Dim image As Image = Image.FromFile("C:\Users\Administrator\Desktop\logo.png")
'Get the image width and height
Dim imgWidth As Integer = image.Width
Dim imgHeight As Integer = image.Height
'Loop through the pages
Dim i As Integer
For i = 0 To document.Pages.Count- 1 Step i + 1
'Get the page width and height
Dim pageWidth As single = document.Pages(i).ActualSize.Width
Dim pageHeight As single = document.Pages(i).ActualSize.Height
'Set the background opacity
document.Pages(i).BackgroudOpacity = 0.3f
'Set the background image of current page
document.Pages(i).BackgroundImage = image
Dim rect As Rectangle = New Rectangle(CInt((pageWidth - imgWidth) / 2), CInt((pageHeight - imgHeight) / 2), imgWidth, imgHeight)
document.Pages(i).BackgroundRegion = rect
Next
'Save the document to file
document.SaveToFile("AddImageWatermark.pdf")
document.Close()
End Sub
End Class
End Namespace
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.
Covert PDF to EMF image file format in C#
Spire.PDF supports to save the PDF files into different image file formats, such as BMP, JPG, PNG, GIF and TIFF. It also supports to save the PDF files as the Enhanced Metafile (EMF) image file format. This article will demonstrate how to save the PDF file as the EMF image file format in C#. With the help of Spire.PDF, we only need three lines of codes to finish the conversion function.
Note: Before Start, please download the latest version of Spire.PDF and add Spire.Pdf.dll in the bin folder as the reference of Visual Studio.
Here comes to the steps of how to export the PDF file to EMF in C#:
Step 1: Create a new PDF document and load from file.
PdfDocument doc = new PdfDocument();
doc.LoadFromFile("sample.pdf");
Step 2: Call to use the SaveAsImage method to save all the PDF pages as System.Drawing.Imaging.ImageFormat.Emf file format.
for (int i = 0; i < doc.Pages.Count; i++)
{
String fileName = String.Format("Sample-img-{0}.emf", i);
using (Image image = doc.SaveAsImage(i, Spire.Pdf.Graphics.PdfImageType.Bitmap, 300, 300))
{
image.Save(fileName, System.Drawing.Imaging.ImageFormat.Emf);
}
}
Effective screenshot:
Full codes:
using Spire.Pdf;
using System;
using System.Drawing;
namespace ConvertPDFtoEMF
{
class Program
{
static void Main(string[] args)
{
PdfDocument doc = new PdfDocument();
doc.LoadFromFile("sample.pdf");
for (int i = 0; i < doc.Pages.Count; i++)
{
using (Image image = doc.SaveAsImage(i, Spire.Pdf.Graphics.PdfImageType.Bitmap, 300, 300))
{
image.Save(fileName, System.Drawing.Imaging.ImageFormat.Emf);
}
}
}
}
}