We are creating mobile app for SharePoint 2010 site.when mobile user enter user name and password .How i check that user exsists in AD or not .

1 Answer 1


You can use System.DirectoryServices.AccountManagement namespace, following should help:

// create a "principal context" - e.g. your domain (could be machine, too)
using(PrincipalContext pc = new PrincipalContext(ContextType.Domain, "YOURDOMAIN"))
    // validate the credentials
    bool isValid = pc.ValidateCredentials("myuser", "mypassword");

PS: It has nothing to do with SharePoint, but you can use it in SharePoint.. You might need to put the code in RunWithElevatedPrivileges

  • Thnx a lot Arsalan.
    – Jon
    Apr 4, 2014 at 10:27
  • @Jon if the above answer was helpful, please mark it correct with a Green tick available with the answer to close the Question.. Apr 4, 2014 at 10:44

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