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C#.NET PDF SDK - Read and Extract Field Data in C#.NET

Help to Read and Extract Field Data from PDF with a Convenient C# Solution in .NET Application

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Generally, for a full-featured PDF software, it should have functions for processing text, image as well as field. RasterEdge .NET PDF SDK is such one provide various of form field edit functions. This page is mainly designed to tell you how to read or retrieve field data from PDF and how to extract and get field data from PDF in C#.NET project. C# demo codes listed below can help you have a quick evaluation of our PDF SDK.

C#.NET Demo Code: Get Filled Data in Fields in C#.NET

Note: When you get the error "Could not load file or assembly 'RasterEdge.Imaging.Basic' or any other assembly or one of its dependencies. An attempt to load a program with an incorrect format", please check your configure as follows:


       If you are using x64 libraries/dlls, Right click the project -> Properties -> Build -> Platform target: x64.


       If using x86, the platform target should be x86.

String inputFilePath = Program.RootPath + "\\" + "1_AF_Filled.pdf";

List<BaseFormField> fields = PDFFormHandler.GetFormFields(inputFilePath);
Console.WriteLine("Number of Fields: " + fields.Count);
if (fields.Count > 0)
    foreach (BaseFormField field in fields)
        Console.WriteLine("  Name:      " + field.Name);

        if (field is AFCheckBox)
            Console.WriteLine("  Type:      " + "CheckBox");
            Console.WriteLine("  IsChecked: " + ((AFCheckBox)field).IsChecked);
        else if (field is AFRadioButton)
            Console.WriteLine("  Type:      " + "RadioButton");
            Console.WriteLine("  IsChecked: " + ((AFRadioButton)field).IsChecked);
        else if (field is AFTextBox)
            Console.WriteLine("  Type:      " + "TextBox");
            Console.WriteLine("  Content:   " + ((AFTextBox)field).Text);
        else if (field is AFListBox)
            Console.WriteLine("  Type:                " + "ListBox");
            Console.WriteLine("  Selected Item Index: " + ((AFListBox)field).SelectedIndexes[0]);
        else if (field is AFComboBox)
            Console.WriteLine("  Type:                " + "ComboBox");
            Console.WriteLine("  Selected Item Index: " + ((AFComboBox)field).SelectedIndex);

.NET Class Namespace Required

In order to run the sample code, the following steps would be necessary.

Add necessary references:









Use corresponding namespaces;

  using RasterEdge.Imaging.Basic;

  using RasterEdge.XDoc.PDF;