Question

I use c# asp.net 4.

I need to create a Guid from a String. The String could be in the right format (so a Guid can be created) or in a not accepted format – In this case I need to set a variable isGuid to false.

At the moment I use this approach. As you can see I’m driven logic using a Try Catch.

I would like to know if you know a better way to perform this operation, to be honest I’m not sure if the use or Try Catch is appropriate here.

PS: If you feel the Title of my Q is not appropriate please let me know I will change it. Thanks!
PS2: If you know a better form of syntax, let me know I’m pretty new at coding.

  string filename;
   bool isGuid;
   Guid guid;
   try
   {
        guid = new Guid(filename);
        isGuid = true;
   }
   catch
   {
        isGuid = false;
   }
   if(isGuid)
   // Do smt here!

Answer 1

If you’re using .NET 4, you can use Guid.TryParse:

Guid guid;
bool valid = Guid.TryParse(text, out guid);