Unplanned
Last Updated: 07 Jul 2025 13:45 by Stenly
Currently, when exporting/copying cells from a column that is bound to a nested property, the base logic of the GridViewDataColumn is that it has a separate logic for this setup. When exporting/copying, the column will try to retrieve the display value rather than the underlying value.
Completed
Last Updated: 12 Aug 2025 10:30 by ADMIN
Release 2025.3.812 (2025 Q3)
When the ShowToolTipOnTrimmedText property of the columns is set to True, the tooltips of the cells will open even when their text is not trimmed if the UseLayoutRounding property of RadGridView is set to True.
Unplanned
Last Updated: 12 Aug 2025 09:34 by Martin Ivanov

When using an INotifyCollectionChanged (like ObservableCollection<T>), RadGridView's data engine subscribes to the CollectionChanged event of the bound collection.

It seems that the WPF views are recreated when you connect to a running remote desktop session or switch the user to a session where the corresponding WPF app is already opened. This creates new instances of all controls, but no unload or another disposal event happens. In this case, the logic that subscribes to the CollectionChanged event again is triggered for the new RadGridView, but the old one never detaches from the event. This causes a memory leak.

If you connect to the session multiple times, the CollectionChanged handler will be attached multiple times leading to a memory leak.

To work this around, set the ItemsSource of RadGridView to null in the SystemEvents.SessionChanged static event.

private void SystemEvents_SessionSwitch(object sender, SessionSwitchEventArgs e)
{
    if (e.Reason == SessionSwitchReason.SessionLock)
    {
        BindingOperations.ClearAllBindings(this.RadGridViewFixed);
    }
}

Declined
Last Updated: 29 Nov 2013 10:01 by ADMIN
Created by: Daniel
Comments: 1
Category: GridView
Type: Bug Report
0
Hello Telerik  Team!

Are there any new informations concerning the below BUG?
(UniqueName-Property is causing binding errors) 
Is this fixed in one of the current versions? What are proper workarounds?

Identical Problem for Sylverlight:
http://www.telerik.com/community/forums/silverlight/gridview/gridviewdatacolumn-data-binding-to-uniquename---why.aspx

Regards Daniel
(DevCraft Customer)
Completed
Last Updated: 02 Dec 2013 11:32 by ADMIN
'Cell is already in the collection' exception is thrown when multiple cells are copied and pasted in a sorted column
Completed
Last Updated: 23 Apr 2014 10:24 by ADMIN
ADMIN
Created by: Yoan
Comments: 0
Category: GridView
Type: Bug Report
0
Resolved with LIB version 2014.1.0428.
Declined
Last Updated: 11 Aug 2016 14:04 by ADMIN
ADMIN
Created by: Vladimir Zagorski
Comments: 0
Category: GridView
Type: Bug Report
0
The grips on the scrollbar's thumb is blurred on 120dpi as well as some of the borders.

As it turns out, we hit a WPF specific problem with 120 DPI. The issue is similar to the following:
http://connect.microsoft.com/VisualStudio/feedback/details/798513/wpf-dpi-rendering-issues-with-two-borders
For the time being this issue is not addressed and most probably would not be fixed. 
Completed
Last Updated: 06 Nov 2015 14:55 by ADMIN
The first character is lost on typing in a column with CellEditTemplate with 
RadMaskedNumericInput, RadMaskedCurrencyInput, RadMaskedDateTimeInput, RadMaskedTextInput.
Declined
Last Updated: 04 Mar 2014 15:57 by ADMIN
This Style is not applied when Windows8 Theme is set for the GridView (only) - it works if an ApplicationTheme is set. 
<telerik:RadGridView  telerik:StyleManager.Theme="Windows8" Name="clubsGrid" .../>

<Style TargetType="telerik:GroupHeaderRow" telerik:StyleManager.BasedOn="Windows8">

<Setter Property="ShowGroupHeaderColumnAggregates" Value="True" />

<Setter Property="Background" Value="Red"/>

</Style>
Declined
Last Updated: 13 Jul 2016 11:15 by ADMIN
ADMIN
Created by: Maya
Comments: 1
Category: GridView
Type: Bug Report
0
There are two different styles for the Validation Message - the Microsoft's and the Telerik's.
Completed
Last Updated: 30 May 2016 12:35 by Vesko
Let your data column have a cell style with DataTrigger which sets the Tooltip depending on the value:

<telerik:GridViewDataColumn.CellStyle>
    <Style TargetType="telerik:GridViewCell">
        <Style.Triggers>
            <DataTrigger Binding="{Binding StadiumCapacity}" Value="42055">
                <Setter Property="ToolTip" Value="THIS IS TOO SMALL" />
                <Setter Property="Background" Value="Red" />
            </DataTrigger>
        </Style.Triggers>
    </Style>
</telerik:GridViewDataColumn.CellStyle>

Initially, when the grid loads - the tooltips are set correctly. But if you edit a cell and change its value to 42055 then the background is set to Red (as expected), but the tooltip does not update.
Declined
Last Updated: 26 Feb 2014 13:52 by ADMIN
Add a bindable property to RadGridView which would allow the selection to be manipulated in MVVM scenarios.
Completed
Last Updated: 07 Apr 2014 11:42 by ADMIN
Declined
Last Updated: 09 Mar 2015 09:44 by ADMIN
Completed
Last Updated: 02 Apr 2014 07:43 by ADMIN
Completed
Last Updated: 10 Nov 2014 10:40 by ADMIN
Declined
Last Updated: 09 Apr 2014 13:16 by ADMIN
Created by: Murali
Comments: 1
Category: GridView
Type: Feature Request
0
I have a RadGridView with RadLinearSparkLines as a column showing ~100 trends.  I am looking to save all sparklines when I save screenshot.
I tried by querying the RadGridView for desired size after a call to Measure(), and pass it to the Arrange().  However, the RadGridView renders within the bounds of its actual size but not the desired size.  I also noticed that the desired size is not as tall as the size required to render all rows.
Is there any way I can save RadGridView as PNG with all rows rendered in the image?

Thanks in advance for any tips!
Declined
Last Updated: 13 Jun 2016 16:39 by ADMIN
ValidationErrorHandler does not get invoked when validating in view mode and System.ComponentModel.INotifyDataErrorInfo interface is implemented.
Declined
Last Updated: 13 Jul 2016 11:26 by ADMIN
ADMIN
Created by: Dimitrina
Comments: 1
Category: GridView
Type: Bug Report
0

			
Unplanned
Last Updated: 03 Aug 2016 13:10 by ADMIN
The workaround could be using QueryableCollectionView instead. Still, it does not suggest the exact same functionality as ICollectionView.