How to create an image mask and insert it to the PDF document using C# and VB.NET?
The Syncfusion Essential® PDF is a .NET PDF library used to create, read, and edit PDF documents. Using this library, you can create an image mask and insert it to the PDF document using C# and VB.NET.
Steps to create an image mask and insert it to the PDF document
- Create a new C# console application project.
- Install the Syncfusion.Pdf.WinForms NuGet package as a reference to your .NET Framework application from NuGet.org.
- Include the following namespaces in Program.cs file.
C#
using Syncfusion.Pdf; using Syncfusion.Pdf.Graphics;
VB.NET
Imports Syncfusion.Pdf Imports Syncfusion.Pdf.Graphics
- Use the following code sample to create an image mask and insert it into the PDF document.
C#
//Create a PDF document
PdfDocument doc = new PdfDocument();
//Add pages to the document
PdfPage page = doc.Pages.Add();
//Create PDF graphics for the page
PdfGraphics graphics = page.Graphics;
//Load the TIFF image
PdfBitmap image = new PdfBitmap("../../Data/Image.tif");
//Create a masking image
PdfImageMask mask = new PdfImageMask(new PdfBitmap("../../Data/mask2.bmp"));
image.Mask = mask;
//Draw the image
graphics.DrawImage(image, 0, 30);
//Saves the document
doc.Save("Output.pdf");
//Close the document
doc.Close(true);
//This will open the PDF file and the result will be seen in the default PDF Viewer
Process.Start("Output.pdf");
VB.NET
'Create a PDF document
Dim doc As PdfDocument = New PdfDocument()
'Add pages to the document
Dim page As PdfPage = doc.Pages.Add()
'Create PDF graphics for the page
Dim graphics As PdfGraphics = page.Graphics
'Load the TIFF image
Dim image As PdfBitmap = New PdfBitmap("../../Data/Image.tif")
'Create a masking image
Dim mask As PdfImageMask = New PdfImageMask(New PdfBitmap("../../Data/mask2.bmp"))
image.Mask = mask
'Draw the image
graphics.DrawImage(image, 0, 30)
'Saves the document
doc.Save("Output.pdf")
'Close the document
doc.Close(True)
'This will open the PDF file and the result will be seen in the default PDF Viewer
Process.Start("Output.pdf")
A complete working sample can be download from ImageToPDF.zip.
By executing the program, you will get the output document as follows,
Take a moment to peruse the documentation. You can find the other options like inserting the image in a new and existing PDF document, inserting vector image, replacing images in an existing PDF document, Image pagination, applying transparency, and rotation to the image, convert multi-page TIFF to PDF.
Refer to here to explore a rich set of Syncfusion Essential® PDF features.
Starting with v16.2.0.x, if you reference Syncfusion® assemblies from the trial setup or the NuGet feed, include a license key in your projects. Refer to the link to learn about generating and registering the Syncfusion® license key in your application to use the components without a trial message.
See Also:
Replace the image in an existing PDF document
Conclusion:
I hope you enjoyed learning about how to create an image mask and insert it to the PDF document using C# and VB.NET.
You can refer to our Flutter PDF feature tour page to learn about its other groundbreaking features and documentation, and how to quickly get started with configuration specifications. You can also explore our Flutter PDF Flutter PDF examples to understand how to create and manipulate data.
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