validation

[csharpula csharp]

Hello ,

I would like to check in c# if a given string consists only numbers or
letters,how can I validate it?

Thanks!

 

[Martin Honnen]

I would like to check in c# if a given string consists only numbers or
letters,how can I validate it?

Use regular expressions e.g.
Regex.IsMatch(yourString, @"^[a-z0-9]+$", RegexOptions.IgnoreCase);

That assumes with "numbers" you want to test for the digits 0..9, with
"letters" for the letters a..z (case insensitive). Of course you can
change the pattern to your needs, the regular expression language in the
..NET framework is documented online here:
http://msdn.microsoft.com/en-us/library/hs600312.aspx
and of course in your local MSDN copy.

 

[Ignacio Machin ( .NET/ C# MVP )]

Hello ,

I would like to check in c# if a given string consists only numbers or
letters,how can I validate it?

Thanks!

*** Sent via Developersdexhttp://www.developersdex.com***

Regular expressions "[A-Za-z0-9]+"