c# windows application

Question

sir i am having textbox in that i have to enter like this only allow numbers and hipan( 2013-2014) without using rex control... send me code

Brijendra Gautam · Answer

Hi Karthick If you can use Regex then this is the simplest code Regex objReg = new Regex([^0-9\-]); if (!objReg.IsMatch(txtTest.Text)) { MessageBox.Show(Success); } Or if you don't want to use Regex then you can use this code bool success = true; List strAllowed = (new string[]{0123456789-}).ToList(); foreach (char c in txtTest.Text) { if(!strAllowed.Contains(c.ToString())) { MessageBox.Show(fail); success = false; } } if(success) MessageBox.Show(Success);