Hi Guys ,
Can you please let me know how I can have a several undo function on a text box?
For example, I have a textBox1 and a btn.Now I would like to redo the textbox value until to back to the very first value entered by user.
I tried this way but it didn't go through!

private void btnUndo_Click(object sender, EventArgs e)
        {
            string iniVal = txtContext.Text;
            while (txtContext.Text != iniVal)
            {
                {
                    txtContext.Undo();
                }
            }

Thanks for your time in advance