private void Window_Loaded(object sender, RoutedEventArgs e)
{
EmployeeFactory EFobj = new EmployeeFactory();
Employee_Table ETobj = EFobj.GetAllByName(EmployeeId);
_vm = new EmployeeViewModel();
_vm.E_Name = ETobj.E_Name;
_vm.E_Address = ETobj.E_Address;
_vm.E_Desg = ETobj.E_Desg;
_vm.E_Phone = ETobj.E_Phone;
_vm.E_Salary = ETobj.E_Salary;
this.DataContext = _vm;
}