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Replace TextBoxField with Image in PDF Document
Updated on Jun 9, 2026
Environment
| Version | Product | Author |
|---|---|---|
| 2021.1.212 | RadPdfProcessing | Martin Velikov |
Description
How to replace a TextBoxField with an Image in a PDF document.
Solution
The following example finds a specific TextBoxField by its name in a RadFixedDocument imported from PDF, preserves its size and Position, and replaces it with an Image.
csharp
RadFixedPage firstPage = document.Pages[0];
Annotation field = firstPage.Annotations.First(a => ((VariableContentWidget)a).Field.Name == "SampleField");
Telerik.Documents.Primitives.Rect fieldRect = field.Rect;
string imagePath = "image.png";
ImageSource newImageSource;
using (FileStream source = File.Open(imagePath, FileMode.Open))
{
newImageSource = new ImageSource(source);
}
SimplePosition simplePosition = new SimplePosition();
simplePosition.Translate(fieldRect.X, fieldRect.Y);
Image newImage = new Image
{
ImageSource = newImageSource,
Position = simplePosition,
Width = fieldRect.Width,
Height = fieldRect.Height
};
firstPage.Annotations.Remove(field);
firstPage.Content.Add(newImage);