The given expression is never of the provided warning.

When you try to getting type of Generic variable “T” you get this warning.Here is the sample :

class CauseWarning {     public void make<T>(T value)     {     if (typeof(T) is Test)         Console.Write("Something");     } } public class Test { }

Here is the solution:

class CauseWarning {     public void make<T>(T value)     {     if (typeof(T).IsAssignableFrom(typeof( Test)))         Console.Write("Something");     } } public class Test { }

Type.IsAssignableFrom Method Determines whether an instance of the current Type can be assigned from an instance of the specified Type.true if the c parameter and the current Type represent the same type, or if the current Type is in the inheritance hierarchy of c, or if the current Type is an interface that c supports. false if none of these conditions are the case, or if c is a null reference.

which process lock my dll

Sometimes you want to know whats happinging at the background or wonder which app or process using specific dll. Or may be like me when try to copy a dll getting error “DLL is used by another process” . So what now ?

Process Explorer is one of great tool for this.


c# setting xmlns root attribute serialization

İf you want to  set xmlns attribute when serialization process you can  use XmlRoot attribute namespace .


[XmlRoot(Namespace= @”;) ]

public class Elements


public Elements()



private string _ID;


public string ID


get { return _ID; }

set { _ID = value; }



happy tips..

c# LDAP can not Reset Password [SOLVED]

Hi Everyone ,

When i am working with LDAP noticed that the resetting password is very problematic . Finally i have found a solution.First of all you should configure your  activedirectory server with ssl authentication i’m not sure it isnecessary
but too many blogs and forums say to do that. Well ,to do so 🙂

And use this code to reset password in your client application

public static void ResetPassword(string dn,string userCN,string newpassword, string admin,string adminpass)
    //Create an active directory context
    DirectoryContext objContext = new DirectoryContext(DirectoryContextType.Domain,
        admin,//you need admin privs.
    Domain objDomain = Domain.GetDomain(objContext);
    DirectoryEntry de = objDomain.GetDirectoryEntry();
    //geting user password
    DirectoryEntry passUser = de.Children.Find("OU=PORTAL").Children.Find("CN=" + userCN);
    using (passUser)
        //this is the common error line if you do not set correct configuration
        passUser.Invoke("SetPassword", new object[] { newpassword });
        passUser.CommitChanges();//don't forget to commint

Usage is simple:

ResetPassword(“testdomain.umbrellacorp.local”, “MyTestUser”, “secret”, “testdomain\\admin”, “adminsecret”);

Someone who encounter with “Invoke SetPassword” error that possible forget to use DirectoryContext class.
DirectoryContext is the key point .This class can access server with appropriate connection settings.You dont need to
set any client configuration for example port,protocol etc.

For more information with DirectoryContext

Happy codding …

c# LDAP Delete Active Directory user

UserDn : ldap path of the user account which is gonna delete.
admin : Priviledged user to delete mean admin account
adminpass : you know what is this 🙂



public static void DeleteUser(string userDn, string admin, string adminpass)
        DirectoryEntry user = new DirectoryEntry(userDn, admin, adminpass);
    catch (System.DirectoryServices.DirectoryServicesCOMException ex)