C# Resize textbox to fit content

Question

I\'m writing a program where the user should be able to write text in a textbox. I\'d like the textbox to resize itself, so it fit the content. I\'ve tried the following:

Answer 1

first, create method to Make the TextBox fit its contents.

private void AutoSizeTextBox(TextBox txt)
{
    const int x_margin = 0;
    const int y_margin = 2;
    Size size = TextRenderer.MeasureText(txt.Text, txt.Font);
    txt.ClientSize =
        new Size(size.Width + x_margin, size.Height + y_margin);
}

then with the TextChanged event handler calls AutoSizeTextBox() function to make the TextBox fit its text when the text changes.

private void txtContents_TextChanged(object sender, EventArgs e)
{
    AutoSizeTextBox(sender as TextBox);
}

That’s all, for more info:

resize-a-textbox-to-fit-its-text