how to validate a numeric field?

Question

I need to validate a field which is numeric. Can anyone point me in the right direction? I am really new to programming and do not know how to go about crreating a method or furnction to validate a textbox field every time a user enters data into it. Thanks in advance Lee

mhelal · Answer

you can use ASCII Code test also :) here you are a complete ValidateData method which use enum DataType {NumberChar} check if the textBox data is numeric or chars?! and return true or false: private bool ValidateData(string data DataType type) { if(type == DataType.Number) { for(int i =0; i = 48) && (charUn = 65) && (charUn = 97)&&(charUn hope useful!

jose.acidrain · Answer

The only way i´ve fonded to do this is using the Parse method: try { int.Parse(text of the field to validate); //If it is numeric this code is executed } catch { //If it is not numeric this code is executed } Cheers!