Form field info does not show up unless field is clicked.

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Form fields may appear empty before you click them due to the absence of the appearance dictionary. By setting false to SetDefaultAppearance(false) method in PdfForm class, will create an own appearance dictionary. Doing this will make the text visible in all the PDF viewers.

Refer to the following code example.

            //Load the PDF document.
 
            PdfLoadedDocument loadedDocument = new PdfLoadedDocument("Input.pdf");
 
            //Get the loaded form.
 
            PdfLoadedForm loadedForm = loadedDocument.Form;
 
            //Get the loaded text box field and fill it.
 
            PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
 
            loadedTextBoxField.Text = "1";
 
            //Set the default appearance.
 
            loadedForm.SetDefaultAppearance(false);
 
            //Save the modified document.
 
            loadedDocument.Save("sample.pdf");
 
            //Close the document
 
            loadedDocument.Close(true);

Sample Link - http://www.syncfusion.com/downloads/support/directtrac/general/ze/FormFillingSample-407788045

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Form field info does not show up unless field is clicked.

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