Completed
Last Updated: 19 Jan 2023 14:50 by ADMIN
Currently, the GridView is working with a maximum of 1000 items when it comes to distinct values. This is managed by a constant value in the source. Add a way to change this value, thus change the allowed maximum number of distinct values.
Completed
Last Updated: 19 Jan 2023 14:50 by ADMIN

Filtering the data by distinct value using the filter query optimization doesn't work properly when adding more than 500 distinct values. To reproduce this, set the OptimizeDistinctFilterQuery property of the corresponding column to True. The distinct values should be filtered using the ColumnFilterDescriptor and the AddDistinctValue method of the DistinctFilter.

In that case, the filter can get reversed and remove the selected distinct values from the data view, instead of adding only them, as would be expected. Or the filter can stop working at all and display all values from the ItemsSource.

To work this around, instead of using the ColumnFilterDescriptor and the AddDistinctValue method, add a composite filter descriptor manually in the FilterDescriptors of RadGridView.

radGridView.FilterDescriptors.SuspendNotifications();
var distinctValuesFilter = new CompositeFilterDescriptor();
distinctValuesFilter.LogicalOperator = FilterCompositionLogicalOperator.Or;
for (int i = 0; i < 5000; i++)
{
	object disctincValue = i;
	var filter = new FilterDescriptor("Id", FilterOperator.IsEqualTo, disctincValue);
	distinctValuesFilter.FilterDescriptors.Add(filter);                
}
radGridView.FilterDescriptors.Add(distinctValuesFilter);
radGridView.FilterDescriptors.ResumeNotifications();

Won't Fix
Last Updated: 19 Jan 2023 14:25 by ADMIN
The mouse-over highlight color is not applied to the correct row when the rows are navigated via the keyboard arrows.
Unplanned
Last Updated: 18 Jan 2023 09:56 by Stenly
Currently, when dragging a column's header outside of RadGridView, no icon is shown to indicate that it cannot be dropped there. Whereas dragging an item outside of the bounds of a RadListBox, a cannot drop icon is shown. We could update the drag-drop logic of the column's header to include a similar behavior.
Unplanned
Last Updated: 09 Jan 2023 10:39 by Martin Ivanov

The background of the GridView's group headers has a light background in the dark color variation of the Windows 11 theme. 

This reproduces only the GroupRenderMode property of RadGridView is set to Nested (the default value).

To work this around set the  GroupRenderMode property of RadGridView to Flat.

Unplanned
Last Updated: 04 Jan 2023 12:09 by Martin Ivanov

This issue manifests when RadGridView loaded some columns first (which are working) and then add more columns. The additional columns cannot paste values in their cells.

To work this around, mark the new columns as auto generated and call one of the internal methods.

newColumn.IsAutoGenerated = true;
this
.gridView.Columns.Add(newColumn); var collectionViewPropInfo = this.gridView.Items.GetType().GetProperty("CollectionView", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic); var qcv = (QueryableCollectionView)collectionViewPropInfo.GetValue(this.gridView.Items); var methodInfo = qcv.GetType().GetMethod("OnElementTypeChanged", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic); methodInfo.Invoke(qcv, new object[0]);

Unplanned
Last Updated: 03 Jan 2023 11:38 by ADMIN

Setting ShowDistinctFilters for a RadGridViewColumn hides the distinct values from the filter popup as expected.

But the grid still queries the ItemsSource for distinct values of said column when showing thje popup - it calls something like

MyQueryable.Select(item => item.SomeColumn).Distinct().OrderBy(item => item).Take(1000))
It looks like a (small) performance hit, especially when custom IQueryable implementation makes calls to external services to query the data.  Which is my case.
Completed
Last Updated: 25 Nov 2022 14:32 by ADMIN
Release LIB 2022.3.1128 (28 Nov 2022)

The current row indicator visual (the right pointing arrow) gets hidden if you enter edit mode of a cell (which shows the cell edit indicator) and then press Esc two times. The first time cancel the cell editing and the second time cancels the row editing. 

This reproduces in the VisualStudio2013 theme.

To work this around, extract the ControlTemplate of GridViewRow for the VisualStudio2013 theme and add the following MultiTrigger at the bottom of the template (last in the ControlTemplate.Triggers collection).

<MultiTrigger>
	<MultiTrigger.Conditions>
		<Condition Property="IsValid" Value="True"/>
		<Condition Property="IsCurrent" Value="True"/>
		<Condition Property="IsInEditMode" Value="False"/>
	</MultiTrigger.Conditions>
	<Setter TargetName="NavigatorIndicator" Property="Visibility" Value="Visible"/>
</MultiTrigger>

Unplanned
Last Updated: 23 Nov 2022 13:50 by Stenly
For example, an event that will occur when the filter icon is clicked or when the filtering drop-down is opening/closing.
Completed
Last Updated: 21 Nov 2022 08:18 by ADMIN
Release LIB 2022.3.1121 (21 Nov 2022)
When a column is bound to a nullable Enum and the null value is selected in the field filter RadComboBox, when the popup is reopened this value is cleared from the UI even though the filtering remains unchanged.
Completed
Last Updated: 18 Nov 2022 06:12 by ADMIN
Release LIB 2022.3.1121 (21 Nov 2022)

The aggregate values shown in the group headers are wrong when scrolling. This happens when the EnableColumnVirtualization property is set to False and ColumnAggregatesAlignment is NextToGroupKey or BelowGroupKey.

To work this around, set the EnableColumnVirtualization property to True or ColumnAggregatesAlignment to NoAlignment. 

Completed
Last Updated: 18 Nov 2022 06:12 by ADMIN
Release LIB 2022.3.1121 (21 Nov 2022)
When the GridViewComboBoxColumn's DataMemberBinding is bound to a property, which is not a primitive type, selecting an item from the drop-down causes the first item of the ItemsSource to be displayed, rather than the selected one.
Completed
Last Updated: 16 Nov 2022 14:17 by ADMIN
Release LIB 2022.3.1121 (21 Nov 2022)
Created by: Lisitsa
Comments: 2
Category: GridView
Type: Feature Request
8
See this thread for more info:
http://www.telerik.com/forums/alternaterowbackground-doesn't-merged-with-rowstyle

It's  really common scenario, because a standard WPF DataGrid works like this.
Unplanned
Last Updated: 15 Nov 2022 16:03 by Martin Ivanov
Created by: Martin Ivanov
Comments: 0
Category: GridView
Type: Feature Request
4
Add keyboard support for the filtering, grouping and sorting features of RadGridView. The keyboard action should start the corresponding action for the column of the current cell. Keyboard actions should be included also for navigation in the UI of the FilteringControl after it gets opened.
Declined
Last Updated: 14 Nov 2022 14:41 by ADMIN
ADMIN
Created by: Dilyan Traykov
Comments: 5
Category: GridView
Type: Feature Request
3
Add a mechanism to fix the current viewport (scrollbar position) when new items are inserted. Currently, when you insert items before the viewport's start, the scrollbar position is offset.
Declined
Last Updated: 14 Nov 2022 14:34 by ADMIN
RadGridView provides two methods to bring an item into the view. We could extend these or create a new one to bring an item to a specific position.
Unplanned
Last Updated: 01 Nov 2022 08:12 by Martin Ivanov
Created by: Martin Ivanov
Comments: 0
Category: GridView
Type: Feature Request
0

Currently, you can set the data format string of the cells in a GridView column by using the DataFormatString property of the column.

Add a mechanism to select the DataFormatString per cell. For example, this can be done using the CellStyleSelector and a new property in the GridViewCell. Or by introducing DataFormatStringSelector property.

Completed
Last Updated: 28 Oct 2022 12:17 by ADMIN
Release LIB 2022.3.1031(31 Oct 2022)
The following exception is thrown when selecting the IsNull operator and the column is bound to a nullable Enum:

"ArgumentException: Must specify valid information for parsing in the string."

The exception is handled internally but results in the filtering not being applied.

Completed
Last Updated: 13 Oct 2022 08:26 by ADMIN
Release LIB 2022.3.1017 (17 Oct 2022)
An empty are before the row appears when you collapse its row details. This happens if the GroupRenderMode is set to Flat and the control is hosted in a RadExpander control. To recreate this, the RadGridView also should have its scrollbars displayed and a RowHeight set to a value bigger then 30 (ex: 35). Note that the row height may increase also if the height of the content in the row is bigger. 
Additionally, to reproduce this, the content of the row details should exceed the viewport.

To work this around, you can set the GroupRenderMode to the legacy Nested layout. Alternatively, you can use the native Expander control instead of RadExpander. Or you can ensure that the contents in the row is less then 35.
Unplanned
Last Updated: 12 Oct 2022 08:38 by Alexander
Currently, when access to the SearchViewModel is needed, it can be achieved through the Loaded event of the RadGridView and Telerik's ChildrenOfType extension to first find the respective GridViewSearchPanel and then its DataContext which is of type SearchViewModel.
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