Pdf's fields should remain editable using itextsharp in asp.net

Question

I have a fillable pdf. In which i have few textboxes.

I fill these fields by using following code(itextsharp).

 DataTable dt = new DataTable();
                  


        

Answer 1

Error: Cannot convert type in PDFHelper.cs

public static Dictionary GetFormFieldNames(string pdfPath)
    {
        var fields = new Dictionary();

        var reader = new PdfReader(pdfPath);
        foreach (DictionaryEntry entry in reader.AcroFields.Fields) //ERROR: 'System.Collections.Generic.KeyValuePair' to 'System.Collections.DictionaryEntry'
        {
            fields.Add(entry.Key.ToString(), string.Empty);
        }
        reader.Close();

        return fields;
    }

'System.Collections.Generic.KeyValuePair' to 'System.Collections.DictionaryEntry'