Form Import and Export

ComPDFKit supports exporting form field data to XFDF files or importing form data from XFDF files. This is similar to annotation import/export (see Import and Export Annotations), but specifically for form fields (Widget).

Export Form Data

You can export form field data to an XFDF file by following these steps:

CPDFDocument document = CPDFDocument.InitWithFilePath("filePath");
document.ExportWidgetToXFDFPath("exportPath.xfdf", "tempPath");

Import Form Data

You can import form field data from an XFDF file to the document by following these steps:

CPDFDocument document = CPDFDocument.InitWithFilePath("filePath");
document.ImportWidgetFromXFDFPath("importPath.xfdf", "tempPath");

Export Complete Form Properties

In addition to exporting form fill values, you can also export complete Widget properties (including position, style, font, color, and all other configuration information). This is useful when you need to fully backup or migrate form structures.

CPDFDocument document = CPDFDocument.InitWithFilePath("filePath");
document.ExportCustomWidgetFromXFDFPath("exportPath.xfdf", "tempPath");

Import Complete Form Properties

You can import complete Widget properties from an XFDF file to the document:

CPDFDocument document = CPDFDocument.InitWithFilePath("filePath");
document.ImportCustomWidgetFromXFDFPath("importPath.xfdf", "tempPath");

Form Import/Export Method Comparison

Function	Method	Description
Form fill values import/export	ImportWidgetFromXFDFPath / ExportWidgetToXFDFPath	Only import/export form field fill values (user-entered data)
Complete form properties import/export	ImportCustomWidgetFromXFDFPath / ExportCustomWidgetFromXFDFPath	Import/export complete Widget properties (position, style, configuration, etc.)