c# - How to stop default function of keyboard key? -


i made textbox , bind space check if string in textbox1 , richtextbox1 same:

if (e.keycode == keys.space) {     if (richtextbox1.text.contains(textbox1.text))     {         richtextbox1.text = richtextbox1.text.replace(textbox1.text + " ", "");         wpm++;         textbox1.text = "";     } }

so want when press space not write space in textbox1

this answer adapted msdn example here

// boolean flag used determine when character other space entered private bool spaceentered = false;  // handle keydown event determine type of character entered control. private void textbox1_keydown(object sender, system.windows.forms.keyeventargs e) {     spaceentered = e.keycode == keys.space; }  // event occurs after keydown event , can used prevent // characters entering control. private void textbox1_keypress(object sender, system.windows.forms.keypresseventargs e) {     // check flag being set in keydown event.     if (spaceentered == true)     {         // stop character being entered control since          e.handled = true;     } }

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