index.aspx.cs

/********************************************************
 * ProcessCheckboxFields method
 * desc:        Sets the Unicode characters for all
 *              checkbox fields
 * parameter:   document - the document in the internal
 *              Text Control format
********************************************************/
private byte[] ProcessCheckboxFields(byte[] document)
{
    // create a new temporary ServerTextControl
    using (TXTextControl.ServerTextControl tx =
      new TXTextControl.ServerTextControl())
    {
        // load the document
        tx.Create();
        tx.Load(document,
          TXTextControl.BinaryStreamType.InternalUnicodeFormat);

        // loop through all ApplicationFields
        foreach (IFormattedText textPart in tx.TextParts)
        {
            foreach (ApplicationField field in textPart.ApplicationFields)
            {
                if ((field.TypeName != "FORMCHECKBOX"))
                    return null;

                // create a new adapter field
                FormCheckBox checkboxField = new FormCheckBox(field);

                // select the field to change the font name
                textPart.Selection.Start = checkboxField.Start - 1;
                textPart.Selection.Length = checkboxField.Length;

                textPart.Selection.FontName = "Arial Unicode MS";

                // set the text (state)
                checkboxField.Text = 
                    checkboxField.Checked == true ? CHECKED : UNCHECKED;
            }
        }

        tx.Save(out document, BinaryStreamType.InternalUnicodeFormat);
        return document;
    }
}