Hi, 

We have RadListBox control with custom ItemTemplate and ItemsPanelTemplate as VirtualizingWrapPanel. For example, in the case when the count of bound items is equal to 30k and a user wants to "Select all" with Ctrl+A, the program hangs for almost 5 seconds.

I made an investigation and found, that the issue related to a check statement "does this item present in collection"  inside SelectionChanger and it takes more than 92% of the execution time.

I am attaching the call tree after performance profiling:

Do you have any workaround for that or any good advice on how the issue might be solved?

Thank you in advance!

BR,

Andrew

Hi everyone,

I have a problem when adding the items into selectedItems of a multi-selection combobox: it take too long (around 30 seconds) to add a list of 260 items.

Is there any possibility to improve that situation?

Many thanks for your help,

Minh tuan

Hi,

We have inserted multiple signed photos into the cell.However, when we exported the image as excel, the shape and position of the image changed, which was inconsistent with that in the RadSpreadSheet.

I've already uploaded an app.

In RadSpreadSheet:

In Excel:

Hi,

i try to always enable the DropDown-Part (the ToggleButton to open the drop down content) of RadRibbonSplitbutton even if the CanExecute of the binded command returns false. How can i achieve this behavior?

i have tried to set IsEnabled of the RadToggleButton via TogglePartStyle of RadRibbonSplitButton but didnt work.

<Style x:Key="SplitButtonToggleStyle" TargetType="telerik:RadToggleButton">
    <Setter Property="IsEnabled" Value="True"/>
</Style>

<Style TargetType="telerik:RadRibbonSplitButton" BasedOn="{StaticResource {x:Type telerik:RadRibbonSplitButton}}">
    <Setter Property="TogglePartStyle" Value="{StaticResource SplitButtonToggleStyle}"/>
</Style>

Thanks for your help!

Best regards,

Daniel

Hi,

I tried to use a RadMasketTextInput instead of a standard TextBox, mainly because of the SelectionOnFocus/Selectall property.
Always wotks well, but the width of control doesn't use all the space left in the parent as a TextBox, in the same position, does.
I tried with stackpanel, dockpanel and Grid, this is the attempt with dockpanel:

<DockPanel Grid.Row="0" Grid.Column="0" Margin="12,0,0,0" HorizontalAlignment="Stretch">
				<Label VerticalAlignment="Center" 
Content="{DynamicResource  ResourceKey={x:Static r:ResourcesKeys.NameLabel}}" />
	<t:RadMaskedTextInput 
	  HorizontalAlignment="Stretch"
	 SelectionOnFocus="SelectAll"
         Value="{Binding SorgenteName}"/>			
</DockPanel>

And with textbox:

<DockPanel Grid.Row="0" Grid.Column="0" Margin="12,0,0,0" HorizontalAlignment="Stretch">
				<Label VerticalAlignment="Center" 
				    Content="{DynamicResource  ResourceKey={x:Static r:ResourcesKeys.NameLabel}}" />
				<TextBox 
									  HorizontalAlignment="Stretch"
							Text="{Binding SorgenteName}"/>
			</DockPanel>

With textbox I have the desired layout.

Thank you in advance

Hi,

How do i remove these folders out of build,

can you show me how to set the minimum?And if distributed on the client can I register them in GAC?

Thank you! 

Hi,

I haven't used .Net in a while, I've lost some basic knowledge.

Can someone show me how to fix this underline error? 

I am using vb.net.

Please let me know if you need more details. 

Thank you!

Hi, I have a shapefile from iran in UTM coordinates, I need to add the shape file to WPF, I added the shape file to my C# and XAML but it did not display. how can I resolve this problem ? if I should change the coordinate system, which coordinate system must be choose in Arc Map(GIS)?

C#

        public MainWindow()
        {
            InitializeComponent();
            fillData();
            this.MouseLeftButtonDown += delegate { this.DragMove(); };
            d_table2.ItemsSource = Dmus;
            d_table.ItemsSource = Dmus;
            this.Loaded += new RoutedEventHandler(MainWindow_Loaded);
        }

        private void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
            xShapeReader.Source = new Uri("shp9/Export_Output_9.shp", UriKind.Relative);
            xShapeReader.DataSource = new Uri("shp9/Export_Output_9.dbf", UriKind.Relative);
        }

XAML

                        <Grid x:Name="LayoutRoot">
                            <telerik:RadMap x:Name="radMap">
                                <telerik:RadMap.Provider>
                                    <telerik:EmptyProvider/>
                                </telerik:RadMap.Provider>
                                <telerik:InformationLayer x:Name="xInfo">
                                    <telerik:InformationLayer.Reader>
                                        <telerik:MapShapeReader x:Name="xShapeReader"/>
                                    </telerik:InformationLayer.Reader>
                                </telerik:InformationLayer>
                            </telerik:RadMap>

                        </Grid>

Hi,

We have made a small extension on the RadGridView to save/load user defined layouts.
What we noticed is that, when we set IsEnabled="{Binding ViewIsViewing}", the grid is always disabled for some reason.
After a long debugging session, we are 200% sure that our ViewIsViewing property is actually set to "True".
But for some reason, the IsEnabled property is set to False.

Is this expected behavior when you extend this UI Element? Or are we overlooking something here?
I can provide more details if needed.

Kind Regards
Tim