How to make an auto sized textbox

Question

I want my textbox to fit with any text that I put into it without having scroll bars. Any idea would be greatly appreciate. Thanks.

Mike Gold · Answer

you'll need to trap a few events here.  Based on the events, you'll need to resize your textbox.  Start by trapping
the TextChanged event.  When you get this event, invalidate the textbox.
measure the string inside the textbox in the paint routine and resize the bounds accordingly.
Here is the code:
private void textBox1_TextChanged( object sender, System.EventArgs e)
{
string text = textBox1.Text;
Invalidate(textBox1.Bounds);
}
private void Form1_Paint( object sender, System.Windows.Forms.PaintEventArgs e)
{
SizeF size = e.Graphics.MeasureString(textBox1.Text, textBox1.Font);
if (size.Width
{
size.Width = textBox1.Font.SizeInPoints * 2;
}
textBox1.SetBounds(textBox1.Left, textBox1.Top, ( int )size.Width + 7, textBox1.Height);
}