Invalid field when trying to fill checkbox

[Sayed Ahmad]

Hi,

In the fillable pdf documents=s there are fields like Checkbox1_val2,  Checkbox1_val3 and so on. When I am filling the form through PdfLoadedCheckBoxField it is showing ivalid field name. However, when I am just mentioning Checkbox1 it is accepting the first checkbox only. Please suggest. I tried to find how to use 

PdfLoadedCheckBoxItemCollection, but not found any suitable example.

[Irfana Jaffer Sadhik]

To get a form field from an existing document using the field name, you can use the TryGetField method in the PdfFormFieldCollection class. It specifies whether the particular field is available in the form or not by returning a boolean value.

The below code snippet explains how to get the field from the collection using the TryGetField method.

//Load the PDF document.

FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);

PdfLoadedDocument doc = new PdfLoadedDocument(docStream);

//Load the form from the loaded document.

PdfLoadedForm form = doc.Form;

//Load the form field collections from the form.

PdfLoadedFormFieldCollection fieldCollection = form.Fields as PdfLoadedFormFieldCollection;

PdfLoadedField loadedField = null;

//Get the field using TryGetField Method.

if (fieldCollection.TryGetField("f1-1", out loadedField))

{

  (loadedField as PdfLoadedTextBoxField).Text = "1";

}

//Save the document into stream.

MemoryStream stream = new MemoryStream();

doc.Save(stream);

//Close the document.

doc.Close(true);

Follow the below links for more information,

https://help.syncfusion.com/file-formats/pdf/working-with-forms#trygetfield

We request you share the specific PDF document to analyze the reported behavior on our end. So that we can assist you further in this. 

[Sayed Ahmad]

Thank you. I have used the above mentioned code but the program is not entering the loop it means the field doesn't exist but in PDF filling app, its name is shown as has val2. I have done it by comparing the name as string and then using setname.

[Ravikumar Baladhandapani]

Thank you for the update and please let us know if you need further assistance on this.