How to find Upper Case Letter in String

Question

Sir Actually i want find Upper Case letter in string

like

protected void CustV1_ServerValidate(object source, ServerValidateEventArgs args)
{

string Char=args.Value;

      if (char.IsUpper() == true)//Error Please Resolve me sir how to Handle i don't know because i an just beginer
    {
   CustV1.IsValid = true;
    }

}

Ananth G · Answer

if (Char.Any( char .IsUpper)) { } Use like this

Ifour Hiren · Answer

bool IsAllUpper(string input) { for (int i = 0; i { if (Char.IsLetter(input[i]) && Char.IsUpper(input[i])) return true; } return false; } it work also special character or digit in input string above code helps you to make it working.

Lokesh Kumar · Answer

Hi Friend Please try this:- protected void CustV1_ServerValidate(object source ServerValidateEventArgs args) { foreach(char c in args.Value) { if (Char.IsUpper(c)) { args.IsValid = true; break; } } args.IsValid = false; }

Hussain Patel · Answer

if you wantto find the upper case character in args.Valueyou will have to loopto the each character of args.Valueusing foreach loop and if you get any UpperCase character exit out of foreach loop and then use the if condition you have.. Here is the sample code.. class Program { static void Main( string []args) { string inputString= WelcometoAbundantCode!!! ; bool tmp= false ; foreach ( char x in inputString) //replaceinputstringwithargs.Value { if (Char.IsLower(x)) tmp= false ; else if (Char.IsUpper(x)) tmp= true ; } if (tmp) { //CustV1.IsValid=true; } Console.Read(); } } Hope this helps..

Jisny Av · Answer

Just go through following links http://stackoverflow.com/questions/6195270/what-is-the-fastest-way-to-check-whether-string-has-uppercase-letter-in-c http://stackoverflow.com/questions/20032450/detect-if-a-string-contains-uppercase-characters

Vulpes · Answer

OK here's the code for both: /* checking for at least one upper case character protected void CustV1_ServerValidate(object source ServerValidateEventArgs args) { foreach(char c in args.Value) { if (Char.IsUpper(c)) { args.IsValid = true; return; } } args.IsValid = false; } /* checking for ALL upper case characters protected void CustV1_ServerValidate(object source ServerValidateEventArgs args) { foreach(char c in args.Value) { if (!Char.IsUpper(c)) { args.IsValid = false; return; } } args.IsValid = true; }

Vulpes · Answer

Do you mean that you want to check that at least one character in args.Value is an upper case letter or that ALL characters in that string are upper case letters?