[Solved] Setting CanUserSelect=false disables 'Select All' GridViewSelectColumn functionality

[keith schaefer]

Hi,

We recently deployed version 2010.2.924.1040 (Q2) of the Web UI Silverlight tools.  In the previous version 2010.1.603.1040, when we set CanUserSelect=false, with SelectionMode=Extended or Multiple, selecting the 'Select All' checkbox in the GridViewSelectColumn header would select all of the records on the page.  Now with the Q2 version, 'select all' no longer selects all the records, nor does it deselect all the records when I uncheck it.  The first time I load the page, clicking 'select all' only selects the first record (regardless if IsSynchronizedWithCurrentItem is true or false).  To the contrary, if I individually select/check each record, 'select all' gets checked when i select all of the records and it unchecks itself as soon as I deselect one. 

This appears to be a bug.  I can attach a sample project demonstrating this behavior if necessary but here is the code from my xaml and code behind:

XAML:

<UserControl x:Class="RadGridTestApp_DELETEME.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:telerikGrid="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView"
    mc:Ignorable="d"
    d:DesignHeight="300"
    d:DesignWidth="400">

    <Grid x:Name="LayoutRoot" Background="White">
        <telerikGrid:RadGridView
                Name="Results"
    CanUserSelect="False"
    SelectionMode="Multiple" >

            <telerikGrid:RadGridView.Columns>
                <telerikGrid:GridViewSelectColumn x:Name="SelectColumn"/>
                <telerikGrid:GridViewDataColumn Header="TEST COLUMN"
                                                IsReadOnly="True"
                                                DataMemberBinding="{Binding TestValue}" />
            </telerikGrid:RadGridView.Columns>
        </telerikGrid:RadGridView>
    </Grid>
</UserControl>

Code Behind:

using System.Collections.Generic;
using System.Windows.Data;

namespace RadGridTestApp_DELETEME {
    public partial class MainPage {
        public MainPage() {
            InitializeComponent();

            var entityList = new List<ListItem> {
                                        new ListItem { TestValue = "ABC" },
                                        new ListItem { TestValue = "DEF" }
                                    };

            Results.ItemsSource = new PagedCollectionView(entityList);
        }
    }

    public class ListItem {
        public string TestValue { get; set; }
    }
}

[Milan]

Hi keith schaefer,

Thank you for reporting this problem we will fix it right away and the fix will be available this Friday with our latest Internal Build.

Best wishes,
Milan
the Telerik team

[Chris]

Q: Did this issue get resolved?

I ask becuase even though I set the GridViewSelectColumn  column to read only and the grid itself .CanUserSelect = false the user can still select rows!

[Yordanka]

Hi,

This is expected behavior when GridViewSelectColumn is used. The purpose of this column is to allow users to select items by clicking the check box in it. This special column has its own logic for selecting items which does not respect CanUserSelect property. Can you please provide more information about the scenario you want to achieve ?
 
Best wishes,
Yordanka
the Telerik team

[Chris]

I find that a ridiculous statement.

If the column definition is within the grid then it should respect the "Can User Select Rows" property. What are the alternatives to make the select column read-only since it does not work properly at this time?

[Vlad]

Hi,

 Can you clarify how selection is related to read-only grid setting? Are you looking for GridViewCheckBoxColumn?

Regards,
Vlad
the Telerik team

[Chris]

You're making this too difficult. Any column in the grid should respect the CanUserSelectRows and IsReadOnly at the grid level. Since that is nnot working whjat are the alternatives?

[Dean Wyant]

If you do not want the select column to select rows by checkbox, perhaps you should remove it from the grid?
If IsReadOnly for the column is not working as you would like, perhaps the column's cell's IsReadOnly or IsEnabled will work?
I do not know much about it, but since there has not been an answer... it is worth a try.