private void OnDoubleClickCommand()
 {
     if (SelectDepartmentEntity != null)
     {
         DepartmentWindow departmentWindow = new DepartmentWindow(SelectDepartmentEntity);
         departmentWindow.Closed += departmentWindowmodify_Closed;
         departmentWindow.Show();
     }
 }
 private void OnModifyCommand()
 {
     DepartmentWindow departmentWindow = new DepartmentWindow(SelectDepartmentEntity);
     departmentWindow.Closed += departmentWindowmodify_Closed;
     departmentWindow.Show();
 }
 private void OnAddCommand()
 {
     AddDepartmentEntity = new DepartmentEntity();
     AddDepartmentEntity.Department = new ProductManager.Web.Model.department();
     AddDepartmentEntity.Update();
     DepartmentWindow departmentWindow = new DepartmentWindow(AddDepartmentEntity);
     departmentWindow.Closed += departmentWindow_Closed;
     departmentWindow.Show();
 }