Hi,

Sometimes I get this issue when I scroll carousel items. See the attached image.

As you can see in the image, the correct order of items should be 1, 2, 3, 4, 5..
But somehow, 1 overlaps 2, and 5 overlaps 4.

Is there a fix for this?

Thanks,
Jog

How do I set the default, initial view for a PropertyGrid to display categorized/grouped instead of listed Alphabetically?

There is a property (SortAndGroupVisibility) for enabling the option to change this by the end user, but I see no means to directly set this in Xaml or code behind...

I've been tracking down a performance problem, and I have it trimmed down to a sample application.  For code I am using, see below.

Edit: This also repros in the "RadControls for WPF Q3 2011 SP1 Demos" package, using the "Scrolling 1 Billion Cells" example.

A) Scroll to the bottom of the RadGridView, so that the bottom-most row is in-view.
B) Attempt to resize the window.

At this point my entire OS hangs.  I am able to regain control of the OS by CTRL-ALT-DEL then cancelling.  At this point I can break the debugger and determine the code is within GridViewCellsPanel.MeasureCell (bottom of stack is GridViewDataControl.MeasureOverride).

I suspect the RadGridView is de-virtualizing when this happens, as the performance gets worse with more records.  While this is happening, I can watch in Task Manager that the CPU usage is pegging and the memory usage goes from about 50MB to about 600MB.

Any suggestions?  This will be a blocker since we do not experience this behavior in WPF's native DataGrid.

Thanks -
- Graeme

XAML:

Sample class used:

Loaded Event Handler:

As title says, is it possible to scroll the scheduleview horizontally and/or vertically from code-behind in WPF?

As you can probably appreciate the scrollbars provided by the scheduleview are a little too small for a touchscreen application I'm working on so I'd like the user to be able to navigate around a scheduleview some other way.

EDIT: I should note that it's important for the user to be able to scroll despite the fact that I'm using resources for grouping. Basically - to provide the functionality the scrollbars do at the moment.

Hello telerik,
I've got a Master Detail GridView that on the expand button shows the child element using a behaviour,
I wish when I click the export button to export all the columns the grid

My object is of this kind

  The master has ID and Col1 and the Hierarchical Col2,3,4,5 ... the viewmodel binds the whole item to the master,  when I export (for now) I got ID Col1... How can I access by codebehind to the HierarchicalChildDataTemplate and enumerate througth the columns?

Thanks

Is it possible to show a Tooltip for a data series only on the plotted points and not on the slope? I do not want the "closest" point's tooltip to be shown when the mouse hovers on the slope.

I'm trying to replicate a "feature" of the Infragistics XamDataGrid so I can do a performance comparison between the two. 

When I open a window with an empty Infragistics grid, the grid shows up with the window, but the grid content (headers, etc.) show up later (i.e., loaded asynchronously). Is it possible to do the same with the Telerik grid? 

I downloaded a project from Telerik named WPFBindingNavigator to get bindingnavigator into my WPF project.  The downloaded project works when run, but the designer throws an "object reference not set to an instance of the object" error.  I am trying to replicate the functionality within my WPF application but cannot seem to get past this error during design time.

Following is a snippet of the error in the "Presentation" project (which references the WPFBindingNavigator, which is a class library):
  The next code block raises the error mentioned above:

Any help will be appreciated.  Also, if there is a better way of creating the BindingNavigation functionality within WPF, please let me know.

Thanks in advance.

 <SolidColorBrush x:Key="LegendBorderBrush"  Color="White" />
        <Thickness x:Key="LegendBorderThickness">0</Thickness>
        <Style x:Key="CustomLegendItemStyle" TargetType="telerik:ChartLegendItem">
            <Setter Property="BorderBrush"
            Value="{StaticResource LegendBorderBrush}" />
            <Setter Property="BorderThickness"
            Value="{StaticResource LegendBorderThickness}" />


            <Setter Property="Template" >
                <Setter.Value>
                    <ControlTemplate TargetType="telerik:ChartLegendItem" >
                        <Border BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="{TemplateBinding BorderThickness}"
                                Background="{TemplateBinding Background}">
                            <Grid x:Name="PART_MainContainer" HorizontalAlignment="Stretch" VerticalAlignment="Top" Margin="0,0,5,0"  >


                                <Path x:Name="PART_LegendItemMarker"                                 
                                  Height="20"
                                  Width="80"
                                  Style="{TemplateBinding ItemStyle}"
                                  Stretch="Fill"
                                  >
                                    <Path.Data>
                                        <PathGeometry x:Name="PART_ItemMarkerGeometry" />
                                    </Path.Data>
                                </Path>


                                <CheckBox IsChecked="True"
                                      VerticalAlignment="Center"
                                      Margin="2,0"
                                      Content="{TemplateBinding Label}"
                                      Foreground="{TemplateBinding Foreground}"                                      
                                      BorderThickness="0"
                                      Checked="CheckBox_Checked" Unchecked="CheckBox_Checked"   />


                            </Grid>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

Above code used to set the radchart legend items. I do not need to display border color for legend items. Setting white,transparant or borderthickness 0 is not helping. Please throw some light. Thanks.

Hello!

I follow the documentation and i manage to use the GridView ComboBox Column perfectly. The one issue is, I have to click three times
in order to change its value.

Since i already worked with CheckBoxColumn i follow that approach:
http://www.telerik.com/help/wpf/gridview-checkbox-column-clicks.html

I Set the "EditTriggers" property of the ComboBoxColumn to CellClick but I still need to click two times. The ComboBox Column doesn't have the AutoSelectOnEdit="True" as the CheckBoxColumn has. I realy like the ComboBoxColumn, is there a way to workaround this without creating a DataTemplate  with a Combobox?

Thank you.

Collapse All       RadControls for Wpf Number of clicks in the CheckBox column Send Feedback PROBLEM If you have a GridViewCheckBox column to your gridview you need to click three times by default in order to change the value of the checkbox - the first two clicks will enter the edit mode and the last one will change the value. The following solutions will give you options to control the number of clicks needed to change the value of the checkbox column. SOLUTION First approach 2 clicks solution By setting the EditTriggers="CellClick" property of the GridViewCheckBoxColumn the cells will enter edit mode with a single click only. Now you will need one more click to change the value of the checkbox. 1 clicks solution In addition to the EditTriggers="CellClick" property, you can set the AutoSelectOnEdit="True" property of the GridViewCheckBox column. This property will alter the checked state of the checkbox as soon as the cell enters edit mode, thus changing the value on a single click. Please note that the GridView has to be focused. This could be done in XAML or in code behind when the columns are AutoGenerated: CopyXAML <telerik:GridViewCheckBoxColumn Name="CheckBoxColumn" EditTriggers="CellClick" AutoSelectOnEdit="True" DataMemberBinding="{Binding IsChampion}" /> CopyC# private void gridView_AutoGeneratingColumn(object sender, GridViewAutoGeneratingColumnEventArgs e) { var dataColumn = e.Column as GridViewDataColumn; if (dataColumn != null) { if (dataColumn.UniqueName.ToString() == "IsChampion") { // create GridViewCheckBoxColumn GridViewCheckBoxColumn newColumn = new GridViewCheckBoxColumn(); newColumn.DataMemberBinding = dataColumn.DataMemberBinding; newColumn.Header = dataColumn.Header; newColumn.UniqueName = dataColumn.UniqueName; newColumn.EditTriggers = Telerik.Windows.Controls.GridView.GridViewEditTriggers.CellClick; newColumn.AutoSelectOnEdit = true; e.Column = newColumn; } } } CopyVB.NET Private Sub gridView_AutoGeneratingColumn(sender As Object, e As GridViewAutoGeneratingColumnEventArgs) Dim dataColumn = TryCast(e.Column, GridViewDataColumn) If dataColumn IsNot Nothing Then If dataColumn.UniqueName.ToString() = "IsChampion" Then ' create GridViewCheckBoxColumn Dim newColumn As New GridViewCheckBoxColumn() newColumn.DataMemberBinding = dataColumn.DataMemberBinding newColumn.Header = dataColumn.Header newColumn.UniqueName = dataColumn.UniqueName newColumn.EditTriggers = Telerik.Windows.Controls.GridView.GridViewEditTriggers.CellClick newColumn.AutoSelectOnEdit = True e.Column = newColumn End If End If End Sub Second approach Another approach you can use is to leverage the CellTemplate of the GridViewDataColumn and put a checkbox in it: CopyXAML <telerik:GridViewDataColumn DataMemberBinding="{Binding IsActive}" IsReadOnly="True"> <telerik:GridViewDataColumn.CellTemplate> <DataTemplate> <CheckBox IsChecked="{Binding IsActive, Mode=TwoWay}" telerik:StyleManager.Theme="Office_Black"/> </DataTemplate> </telerik:GridViewDataColumn.CellTemplate> </telerik:GridViewDataColumn> The checkbox is two-way bound to the IsActive bool property so with single click you change it. The benefit here is that the checkbox looks enabled, because it is in the CellTemplate while in the first approach the checkbox looks disabled (because the cells are not in edit mode yet). Note that the column is read-only, since this is a checkbox with two-way binding and there is no need to enter the edit mode at all. Send comments on this topic to documentation@telerik.com © 2002-2011 Telerik, All Rights Reserved.