TextBox Multi Undo/Redo Function

Question

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

Frogleg · Answer

One way public partial class Form1 : Form { List txtStr = new List (); public Form1() { InitializeComponent(); } private void Form1_Load(object sender EventArgs e) { } private void bttnAccept_Click(object sender EventArgs e) { txtStr.Add(textBox1.Text); } private void bttnUndo_Click(object sender EventArgs e) { if (txtStr.Count > 0) { txtStr.RemoveAt(txtStr.Count - 1); if (txtStr.Count != 0) { textBox1.Text = txtStr[txtStr.Count - 1]; } } } }

Behrouz Hosseini · Answer

Thanks Frogleg This is exactly what I was looking for