Copy paste and cut paste

Question

Hi Now I am working on windows applications I have written some logic to accept required specialcharacters and alphabets and digits in keypress events.Its working while I am trying to enter the data in my text box but my requirement foail for copy paste or cut paste to textbox. I have tride to solve this problem in keydown event but I unable to get result. and for example :Ctrl+V I put break point at this event procedure(keydown) and I press Ctrl key then immediatly this event has fired before I press V key so can you tel me how to resolve my problem.

raja ramesh · Answer

Can you any one tel me answer for my above requirement!!!!!!!! And another requirement 2)In my form I have two buttons one is Save button and another one is Clear button. First time when I click Save button validations are working perfectly and I have written CausesValidation =false for my Clear button So once I click Clear button after I try to click to Save button all validations are not working properly Because I think I have written CausesValidation=false for my Clear button. so how to cnange CausesValidation=true for all controls in the Form before I click save button.

raja ramesh · Answer

Thanks for reply Hi mahesh in your article you have written in button click event but where I have to write code for paste data using Ctrl+V and paste data by using mouse. I have written in keypress event in following way private void RadMaskedEditBoxForRegex_KeyPress(object sender KeyPressEventArgs e) { Regex regex = new Regex((sender as RadMaskedEditBoxElement).Mask); if (!regex.IsMatch(e.KeyChar.ToString())) { e.Handled = true; return; } } But its not working for copy paste.

Mahesh Chand · Answer

How are you copying cut pasting? You should look and use the Clipboard class. It will retain everything in your controls. See my article below. Working with System Clipboard

Prabhu Raja · Answer

Hi raja can you Please give some of your code