How to validate both lowercase and uppercase input?

Question

I have a winform application and I was wondering what is the c# code to validate both lowercase and uppercase input for string search comparison.Thank you.

Answer 1

One way is to use the method in the string class ToUpper() or ToLower() before validation.

Something like

string inputString = "inputfoo";

if (inputString.ToUpper() == "INPUTFOO"){
  //do something, this is going to be executed
}

you can also check ToLower(), ToLowerInvariant, and ToUpperInvariant methods for further choices.