Lập trình

private bool CheckPassword(string UserName, string Password)

{

    bool bSuccess = false;

    Password = 

        FormsAuthentication.HashPasswordForStoringInConfigFile(Password, 

        "SHA1");

    OleDbCommand oleCommand = new OleDbCommand("SELECT * FROM Users" + " WHERE UserName='" + txtUserName.Text + "'", oledbUsers);

    try

    {

        oledbUsers.Open();

        OleDbDataReader rdrUsers = oleCommand.ExecuteReader();

        while (rdrUsers.Read())

        {

            if (Password == rdrUsers["Password"].ToString())

                bSuccess = true;

        }

        oledbUsers.Close();

    }

    catch

    {

        bSuccess = false;

        oledbUsers.Close();

    }

    return bSuccess;

}