[]
Sets the String value representing the Rich Text associated with the specified key.
If the value is null or empty removes the key from the dictionary.
Note! The method converts a string to the PdfString.
Note! The method encloses the value
with PdfConsts.c_RichStringPrefix and
PdfConsts.c_RichStringSuffix
public static void SetRichTextNotEmpty(this IPdfDict dict, PdfName key, string value)
Public Shared Sub SetRichTextNotEmpty(dict As IPdfDict, key As PdfName, value As String)