Measure String inside RichTextBox Control

Question

Can somebody please explain how I would go about measuring the string inside a richtextbox control so that the I can automatically resize the richtextbox control according t

Answer 1

Assuming that someone is typing into the control, you could use an event to fire every time a character is entered (increment counter) and decrement when it is deleted. This would give you a true count.

Edit:

Have you tried this to adjust the height?

richTextBox1.Height = (int)(1.5 * richTextBox1.Font.Height) + richTextBox1.GetLineFromCharIndex(richTextBox1.Text.Length + 1) * richTextBox1.Font.Height + 1 + richTextBox1.Margin.Vertical;

richTextBox1.SelectionStart = 0;

richTextBox1.SelectionStart = richTextBox1.Text.Length;

Or you can do this using Width:

Graphics g = Graphics.FromHwnd(richTextBox1.Handle);

SizeF f = g.MeasureString(richTextBox1.Text, richTextBox1.Font);
richTextBox1.Width = (int)(f.Width)+5;