In System.Windows.Forms.RichTextBox, how to convert from LineNumber to character position?

Question

I would like the converse of RichTextBox.GetLineFromCharIndex()

I have a line number and I want to retrieve the char index for that line. The method might be called RichTextBox.GetCharIndexFromLine().

Is it possible, simply?

Answer 1

richTextBox1.GetFirstCharIndexFromLine(int lineNumber)

Answer 2

Yes, the method is RichTextBox.GetFirstCharIndexFromLine(LineNumber)

Answer 3

GetFirstCharIndexFromLine is not member of 'System.Windows.Forms.RichTextBox'