How to check if a user belongs to a Security or Distribution group in ASP.Net
If you need to check at Runtime if your User belongs to a Security group. Here's how to do it -
Assuming the IIS Application has Authentication set to "Windows Authentication". The Request object of HttpContext has the Logged in users Identity which contains Groups. Here is the code which validates if a user belongs to a particular Security group -
var
account = new NTAccount(@"Domain\SecurityGroupName"); //The security group you want to check the user belongs to
var
groups = HttpContext.Current.Request.LogonUserIdentity.Groups;//Get a collection of Groups the user belongs to
bool
hasAccount = groups.Contains(account.Translate(typeof(SecurityIdentifier)));//do the test
