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I've just noticed that Textbox have a default shortcut so that whenever you press Ctrl + H, it starts with deleting letters as if you pressed BackSpace.

This can get quite annoying since I want to open a Form whenever Ctrl + H is pressed. Is there any way to stop the backspacing while still being able to use it to open the Windows Form?

Alex
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1 Answers1

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CTRL-H is the ASCII BS (Backspace) character.

You can disable (or redefine) it, since CTRL+H and BackSpace are not exactly the same thing. There are a few examples listed on this question with other keys.

You need to add the KeyEventHandler in your Form1.Designer.cs like this:

this.textBox1.KeyDown += new System.Windows.Forms.KeyEventHandler(this.textBox1_KeyDown);

And in your Form1.cs add this function:

private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.H && e.Modifiers == Keys.Control)
    {
        //uncomment if ReadOnly is not working
        //e.SuppressKeyPress  = true;
        
        textbox1.ReadOnly = true;
        Form2 form2 = new Form2();
        form2.Show();
        textbox1.ReadOnly = false;
    }
}
Malware Werewolf
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  • Thank you for the anwser, I found an existing KeyEventHandler in Form1.Designer.cs, I put textBox1_KeyDown as you wrote, but the same problem remained, after pressing Ctrl+H it opens the Form2 and also deletes a character from the Textbox1 – Alex Jan 05 '22 at 09:39
  • I think I found a solution, I added to your answer textbox1.ReadOnly = true before opening Form2 and added textbox1.ReadOnly = false after opening it, and it doesn't delete a character after pressing Ctrl+H – Alex Jan 05 '22 at 09:52
  • @Alex probably it was the second form which was overwriting the **SuppressKeyPress** property. I'm glad that it worked. – Malware Werewolf Jan 05 '22 at 10:03