Key monitoring and rewriting

I. Previewkeydown,KeyDown,KeyPress,KeyUp Related: http://blog.csdn.net/jiankunking/article/details/ 20611383

You need to focus on the control to listen for keystrokes.

Second, the following code is a rewrite event to listen to the left and right key, cancel click Enter in DataGridView to select the next line.

protected Override BOOLprocessCmdKey (refMessage msg, Keys keyData) {            if(KeyData = =keys.enter) {if(Tabcontrol1.selectedindex = =0) SHOWCOUNTP (); Else if(Tabcontrol1.selectedindex = =1) Showcounti (); return Base.            processDialogKey (KeyData); }            if(KeyData = =keys.left) {if(Tabcontrol1.selectedindex = =0) Tabcontrol1.selectedtab=TabPage2; Else if(Tabcontrol1.selectedindex = =1) Tabcontrol1.selectedtab=TabPage1; return true; }            if(KeyData = =keys.right) {if(Tabcontrol1.selectedindex = =0) Tabcontrol1.selectedtab=TabPage2; Else if(Tabcontrol1.selectedindex = =1) Tabcontrol1.selectedtab=TabPage1; return true; }            Else            {                return false; }        }

Key monitoring and rewriting