This post is very much a combination of my three previous posts (Silverlight QueryString using TryParse() method, Validate GUID in Silverlight – Parse GUID in C# and Extension methods in Silverlight and C#) to demonstrate all these great features in one place. I have also added an Extension method in this project to validate Date and Time using a simple Regular Expression, for better validation I suggest change the Regular Expression to match your specific needs.
I am not explaining the code for this project as each part is explained in details in the posts I mentioned above, but please do feel free to ask any questions in the comment section below and I will try to answer as soon as I can.
This project can be downloaded from CodePlex from here, and feel free to play with the working version of it below.
Posted by Damon Serji on
7. October 2009 18:57 under:
Intermediate
I have been looking around to find any built-in method to parse GUIDs in Silverlight, or to tell me if a value of type string is a valid GUID or not. After a few research I decided to create an Extension method to validate my GUID using Regular Expressions.
You can read more about Extension methods in Silverlight in my previous post here, but here I have a method to receive a string value and return true/false depending on if the sting value is a valid GUID or not. Anyway, here is what we can do to validate Silverlight GUID!
public static bool IsGUIDValid(string expression)
{
if (expression != null)
{
Regex guidRegEx = new Regex(@"^(\{{0,1}([0-9a-fA-F]){8}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){12}\}{0,1})$");
return guidRegEx.IsMatch(expression);
}
return false;
}
Posted by Damon Serji on
7. October 2009 16:17 under:
Intermediate
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