/// <summary>
 /// Shows  filtered documents by logged user in database after when displayLoggedUserCheckbox is marked.
 /// Score is display in left datagrid in menager window.
 /// </summary>
 /// <param name="displayAllCheckbox">It's atLoggedUser checkbox in MenagerWindow</param>
 /// <param name="displayLoggedUserCheckbox">It's allDocuments checkbox in MenagerWindow</param>
 /// <param name="dataSource">It's agentDocument ItemsSource</param>
 /// <param name="loggedUser">It's userNameField.Text (label) in MenagerWindow</param>
 public static void LoggedUserCheckboxChecked(CheckBox displayAllCheckbox, CheckBox displayLoggedUserCheckbox, DataGrid dataSource, TextBlock loggedUser)
 {
     displayAllCheckbox.IsChecked        = false;
     displayLoggedUserCheckbox.IsChecked = true;
     dataSource.ItemsSource = UserDatagrid.DisplayPolicyListInDataGrid().Where(n => n.UserName.Equals(loggedUser.Text));
 }
 /// <summary>
 /// Shows all documents which are in database after when displayAllCheckbox is marked.
 /// Score is display in left datagrid in menager window.
 /// </summary>
 /// <param name="displayAllCheckbox">It's atLoggedUser checkbox in MenagerWindow</param>
 /// <param name="displayLoggedUserCheckbox">It's allDocuments checkbox in MenagerWindow</param>
 /// <param name="dataSource">It's agentDocument ItemsSource</param>
 public static void AllDocumentCheckboxChecked(CheckBox displayAllCheckbox, CheckBox displayLoggedUserCheckbox, DataGrid dataSource)
 {
     dataSource.ItemsSource = UserDatagrid.DisplayPolicyListInDataGrid();
     displayLoggedUserCheckbox.IsChecked = false;
     displayAllCheckbox.IsChecked        = true;
 }