How to Apply Border to an Image in .NET Core Word Document?

Syncfusion® Essential® DocIO is a .NET Word library used to create, read, edit, and convert Word documents programmatically without Microsoft Word or interop dependencies. Using this library, you can apply a border to an image in a Word document using C#.

To achieve this, place the image inside the textbox and apply a border to the textbox using the LineColor API.

Steps to apply a border to an image in a Word document:

1. Create a new .NET Core console application project.
2. Install the Syncfusion.DocIO.Net.Core NuGet package as a reference to your project from NuGet.org.
   
   

3. Include the following namespaces in the Program.cs file.
   C#

using Syncfusion.DocIO;
using Syncfusion.DocIO.DLS;
using Syncfusion.Drawing;

4. Use the following code example to apply a border to an image in a Word document.
   C#

//Create a Word document.
using (WordDocument document = new WordDocument())
{
   document.EnsureMinimal();
   //Appends a new textbox to the paragraph.
   IWTextBox textbox = document.LastParagraph.AppendTextBox(150, 75);
   //Set color to the textbox's line.
   textbox.TextBoxFormat.LineColor = Color.Purple;
   //Set size of the textbox's border.
   textbox.TextBoxFormat.LineWidth = 2;
   //Set textbox's margin values to zero.
   textbox.TextBoxFormat.InternalMargin.Top = 0f;
   textbox.TextBoxFormat.InternalMargin.Bottom = 0f;
   textbox.TextBoxFormat.InternalMargin.Left = 0f;
   textbox.TextBoxFormat.InternalMargin.Right = 0f;
   //Set text trapping style to the textbox.
   textbox.TextBoxFormat.TextWrappingStyle = TextWrappingStyle.Inline;

   //Add new text to the textbox body.
   IWParagraph textboxParagraph = textbox.TextBoxBody.AddParagraph();
   FileStream imageStream = new FileStream(Path.GetFullPath(@"Data/Picture.png"), FileMode.Open, FileAccess.ReadWrite);
   WPicture picture = textboxParagraph.AppendPicture(imageStream) as WPicture;
   //Set the picture width scale factor in percent.
   picture.WidthScale = 80;
   //Set the picture height scale factor in percent.
   picture.HeightScale = 80;

   //Set picture size as textbox size.
   textbox.TextBoxFormat.Width = picture.Width;
   textbox.TextBoxFormat.Height = picture.Height;

   //Create file stream.
   using (FileStream outputFileStream = new FileStream(Path.GetFullPath(@"Output/Result.docx"), FileMode.Create, FileAccess.ReadWrite))
   {
       //Save the Word document to file stream.
       document.Save(outputFileStream, FormatType.Docx);
   }
}

You can download a complete working sample to apply a border to an image in a Word document from the GitHub.

Take a moment to peruse the documentation where you can find basic Word document processing options along with features like mail merge, merge, split, and compare Word documents, find and replace text in the Word document, protect the Word documents, and most importantly, the PDF and Image conversions with code examples.

Conclusion

I hope you enjoyed learning about how to apply a border to an image in a .NET Core Word document.

You can refer to our ASP.NET Core DocIO feature tour page to learn about its other groundbreaking feature representations and documentation, and how to quickly get started with configuration specifications. You can also explore our ASP.NET Core DocIO example to understand how to create and manipulate data.

For current customers, you can check out our components from the License and Downloads page. If you are new to Syncfusion®, you can try our 30-day free trial to check out our other controls.

If you have any queries or require clarifications, please let us know in the comments section below. You can also contact us through our support forums, Direct-Trac, or feedback portal. We are always happy to assist you!