validating regular forms in c#.net

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.NET2.0

Hello sir,

I am doing project in C#.NET The project title is "Estimation of defects based on Defect decay model".I got login as a module but if he is new then he has to register in registration form.In the form i have taken the fielda as username,password,conformpassword and Email-id.

my problem is
All the fields should be validated compulsorly and FOR Email-id compulsorly . and @ symbols are to be given by user then only if user clicks on submit it has to enter database.

plz solve my problem.

Posted 9-Mar-10 4:45am

p.saikrishna

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Sandeep Mewara · Answer 1 · 2010-03-09T04:52:00

You can do it using Regular expressions.

C#

using System.Text; 

private bool IsValidEmail(string email)        
{            
    string emailRegEx = @"^[a-z][a-z|0-9|]*([_][a-z|0-9]+)*([.][a-z|"
                      + @"0-9]+([_][a-z|0-9]+)*)?@[a-z][a-z|0-9|]*([-][a-z|0-9]+)*\.([a-z]" 
                      + @"[a-z|0-9]*(\.[a-z][a-z|0-9]*)?)$";
    RegularExpressions.Match match = 
    RegularExpressions.Regex.Match(email, emailRegEx, RegularExpressions.RegexOptions.IgnoreCase);            
    return match.Success;  
}

Read this for more info:
MSDN: How To: Use Regular Expressions to Constrain Input in ASP.NET[^]

Sandesh M Patil · Answer 2 · 2010-04-22T03:20:00

Solution 2

Use Regular Expression validator and find out the regular expression on google :)

Posted 22-Apr-10 3:20am

Sandesh M Patil