How to find a checkbox in a word document using .NET?

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 find and uncheck the checkbox in a word document using C#.

Steps to find a checkbox 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 .NET Core application from NuGet.org.
   

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

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

4. Use the following code example to find a checkbox in a word document. The code finds all checkbox content controls (both block and inline) in the document and programmatically unchecks them before saving the updated document.
   C#

// Opens the input Word document from the specified path
using (FileStream fileStream = new FileStream(Path.GetFullPath("Data/Template.docx"), FileMode.Open, FileAccess.Read))
{
   // Loads the Word document into DocIO
   using (WordDocument document = new WordDocument(fileStream, FormatType.Docx))
   {
       // Finds all Block Content Controls of type CheckBox in the document
       List<Entity> blockContentControls = document.FindAllItemsByProperty(EntityType.BlockContentControl, "ContentControlProperties.Type", ContentControlType.CheckBox.ToString());

       // Verifies if any block-level checkbox content controls are found
       if (blockContentControls != null)
       {
           foreach (Entity entity in blockContentControls)
           {
               // Cast the entity to BlockContentControl
               BlockContentControl blockContentControl = entity as BlockContentControl;
               // Unchecks the checkbox
               blockContentControl.ContentControlProperties.IsChecked = false;
           }
       }

       // Finds all Inline Content Controls of type CheckBox in the document
       List<Entity> inlineContentControls = document.FindAllItemsByProperty(EntityType.InlineContentControl, "ContentControlProperties.Type", ContentControlType.CheckBox.ToString());

       // Verifies if any inline checkbox content controls are found
       if (inlineContentControls != null)
       {
           foreach (Entity entity in inlineContentControls)
           {
               // Cast the entity to InlineContentControl
               InlineContentControl inlineContentControl = entity as InlineContentControl;
               // Unchecks the checkbox
               inlineContentControl.ContentControlProperties.IsChecked = false;
           }
       }

       // Creates a file stream for the output document
       using (FileStream outputStream = new FileStream(Path.GetFullPath("Output/Result.docx"), FileMode.Create, FileAccess.Write))
       {
           // Saves the modified document with updated checkbox states
           document.Save(outputStream, FormatType.Docx);
       }
   }
}

You can download a complete working sample to find a checkbox in a word document from GitHub.

A sample output of the find a checkbox in a word document is shown below:

Take a moment to peruse the documentation where you can find basic Word document processing options along with the 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 find a checkbox in a word document.

You can refer to our ASP.NET Core DocIO feature tour page to know about its other groundbreaking feature representations and documentation to understand how to create and manipulate data.

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