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TextBox Multi Undo/Redo Function

Behrouz Hosseini

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

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Frogleg15y ago
Accepted 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];
}

}

}
}
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Behrouz Hosseini15y ago
Thanks Frogleg

This is exactly what I was looking for
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