Disable a particular key

First get a event of your text feild (like text box) in your project

double click on this event of your textbox or richtextbox

this event occurs when ever a key is pressed

now the code,
 private void richTextBox1_KeyDown(object sender, KeyEventArgs e)
        {
 


            /////////// do your work here
            if ( e.KeyCode == Keys.A)
            {
                e.Handled = true;
            }

       
        }





Enjoy the joy of Coding
God Bless You
Jai SiyaRam

Alert on when a combination of keys is pressed

First get a event of your text feild (like text box) in your project

double click on this event of your textbox or richtextbox

this event occurs when ever a key is pressed

now the code,
 private void richTextBox1_KeyDown(object sender, KeyEventArgs e)
        {
   


            /////////// do your work here
            if (Control.ModifierKeys == Keys.Control && e.KeyCode == Keys.E)
            {
                MessageBox.Show("ctrl + e");
            }

         
        }





Enjoy the joy of Coding
God Bless You
Jai SiyaRam

Key Event

,If, you want to know that any key is pressed
then follow the following code:


First, get a key down event of your richtextbox or textbox
as it is given in this pic.

                        double click on this event of your textbox or rich text box

this event occurs when ever a key is pressed

...

now,

    private void richTextBox1_KeyDown(object sender, KeyEventArgs e)

        {

      

            if (e.KeyCode == Keys.Space)

            {

               /// do your work here

               MessageBox.Show("space");

            }

           

            if (e.KeyCode == Keys.F2)

            {

                MessageBox.Show("f2");

            }

        }




Enjoy the joy of Coding
God Bless You
Jai SiyaRam