In the click events of your menu items you just need to call the undo/redo methods of the RichTextBox or TextBox you have on your form....You can also check to see if it's possible to undo or redo in the popup event of your menuitem's parent
For example, if I had a menuitem called miEdit with two child menuitems called miEditUndo and miEditRedo and a RichTextBox called rtbText I'd so this:
The popup event for miEdit:
public void miEdit_Popup(object sender, System.EventArgs e)
{
if(rtbText.CanUndo)
miEditUndo.Enabled = true;
else
miEditUndo.Enabled = false;
if(rtbText.CanRedo)
miEditRedo.Enabled = true;
else
miEditRedo.Enabled = false;
}
Then for the click even of the Undo button:
public void miEditUndo_Click(object sender, System.EventArgs e)
{
rtbText.Undo();
}
Then for the click event of the Redo MenuItem
public void miEditRedo_Click(object sender, System.EventArgs e)
{
rtbText.Redo();
}
That's how you do it
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