Questions on UI for WPF Forum

1 answer

115 views

Is there a Filtered event on the VirtualGrid control?

I need a way to determine that the user has applied a column filter in the VirtualGrid control so I can update another control in my UI. Is there a way to determine when a filter has been applied or cleared?

VirtualGrid

answered on 09 Oct 2023

0 answers

181 views

System.ThrowHelper.ThrowArgumentOutOfRangeException

Hello,

I use telerik for wpf. And now I have some problems with my application.

it suddenly breaks and closes. I used "try catch", but it didn't help me.

I have errors in the windows journal on my computer.

I attached these error messages.

I hope for your help.

GridView

updated question on 06 Oct 2023

0 answers

128 views

RadPane Tab Scrolling with Custom Headers

I am trying to get the RadPane tabs to scroll when overflowed, but it isn't working. I followed the example here, but it still does not scroll when enough tabs are made visible that exceed the visible width of the tab space. I am using a User Control for the tab header content instead of the standard String.

<telerik:RadDocking.DocumentHost>
  <telerik:RadSplitContainer Orientation="Vertical">
    <!-- Main Content -->
      <telerik:RadPaneGroup x:Name="PaneGroup1" 
                            ScrollViewer.HorizontalScrollBarVisibility="Auto"
                            DropDownDisplayMode="Visible">
        <!-- Schedule -->
        <telerik:RadPane CanUserClose="False" x:Name="RadPane_ScheduleItems" IsHidden="True"
                         telerik:RadDocking.SerializationTag="ScheduleItems.HeaderObj">
          <telerik:RadPane.Header>
            <uc:RadPaneHeader x:Name="RadPaneHeader_ScheduleItems"
                              Header="Schedule Items" />
          </telerik:RadPane.Header>
            <uc:ScheduleGridView x:Name="ScheduleItems" />
        </telerik:RadPane>

Tabs before and after are attached.

Docking

asked on 05 Oct 2023

1 answer

119 views

DesktopAlertManager sopped displaying the alert

For several years I have been using the RadDesktopAlertManager in my application. Recently I noticed that it has stopped displaying the alert, but without any exceptions.

When I debug, everything works as expected, until I get to the .ShowAlert execution on the manager. Then this happens.

The rest of my code works just fine, and the only thing I am lacking is the alert... but this is of course an application wide outage.

Any ideas... missing a dll? or....

DesktopAlert

answered on 04 Oct 2023

1 answer

195 views

WPF MultiColumnComboBox Open DropDown on Focus?

Hello, Im using a MultiColumnComboBox and I was wondering if there is a way to click anywhere in the combobox and open the dropdown? I tried combobox.OpenDropdown on GotFocus() but it didn't work. Currently it only opens the dropdown if I click in the button or OpenDropDownOnInput, but there is still a big blank space that does nothing if I click.

ComboBox

General Discussions

MultiColumnComboBox

answered on 04 Oct 2023

1 answer

133 views

Hierarchical Template Entire TreeView Width

When I use a Hierarchical Template for generating a TreeView the branches of the TreeView wont use the entire width of the TreeView, even when I use a Grid with a column of * width. Is there a way to get the template content to make use of the entire width?

TreeView

answered on 04 Oct 2023

1 answer

117 views

FilterIconBackgroundFiltered property doesn't seem to work

I am setting both the FilterIconBackgroundFiltered and the FilterIconBackground properties on a RadVirtualGrid control in xaml. The FilterIconBackground property changes the filter icon color, but even after adding a filter to a column, the icon never changes to the FilterIconBackgroundFiltered color.

Any thoughts on why this might be happening?

Thanks!

        <tk:RadVirtualGrid x:Name="VirtualGrid"           
            FontSize="{Binding FontSize}"
            Foreground="{Binding RelativeSource={RelativeSource AncestorType={x:Type local:ParticleReportControl}}, Path=Foreground}"
            Background="{StaticResource GsBackgroundDark}"
            CanUserFilterColumns="True"
            CanUserSortColumns="True" 
            ColumnHeaderForeground="{StaticResource GsForegroundMain}"
            ColumnHeaderBackground="{StaticResource GsBackgroundDark2}"
            CellTextAlignment="Center"
            LinesVisibility="Both"
            IsFilterable="True"
            FilterIconBackgroundFiltered="Red"
            FilterIconBackground="{StaticResource GsForegroundMain}"
            HorizontalLinesBrush="{StaticResource GsForegroundMain}"
            VerticalLinesBrush="{StaticResource GsForegroundMain}"
            MeasureTextOnRender="True"
            ShowDistinctFilters="False"
            tk:RadContextMenu.ContextMenu="{StaticResource CtxMenu}"
            CellDecorationsNeeded="VirtualGrid_OnCellDecorationsNeeded"
            HeaderCellDecorationsNeeded="VirtualGrid_OnHeaderCellDecorationsNeeded"
            OverlayBrushesNeeded="VirtualGrid_OnOverlayBrushesNeeded"
            HeaderSizeNeeded="VirtualGrid_HeaderSizeNeeded"
            >
        </tk:RadVirtualGrid>

VirtualGrid

answered on 03 Oct 2023

0 answers

97 views

VirtualGrid Column Header Background

In the top right corner of my RadVirtualGrid control there is a small rectangle that gets displayed over top of the column header text. It becomes more of an issue when the horizontal scrollbar is needed, and it obscures the header caption text. Please refer to the attached images.

Is this a bug in the rendering code? Is there a workaround?

Thanks!

VirtualGrid

asked on 02 Oct 2023

2 answers

179 views

GridViewDataColumn header content foreground color not matching the sort color

When creating a GridViewDataColumn for a RadGridView to use sometimes I want to add custom content for the header in addition to text.

<telerik:RadGridView Grid.Row="2" AutoGenerateColumns="False" >
      <telerik:RadGridView.Items>
          <TextBlock Text="1" />
          <TextBlock Text="2" />
          <TextBlock Text="3" />
      </telerik:RadGridView.Items>
      <telerik:RadGridView.Columns>
         <telerik:GridViewDataColumn Width="80"
                            HeaderTextAlignment="Center"
                            TextAlignment="Center"
                            IsFilterable="False"
                            DataMemberBinding="{Binding Path=Text}">
    <telerik:GridViewDataColumn.Header>
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="auto" />
            </Grid.ColumnDefinitions>
            <TextBlock Text="Queued"
                       TextAlignment="Center"
                       VerticalAlignment="Center"
                       ToolTipService.ToolTip="The time elapsed" />
            <Path Grid.Column="1"
                  Data="M22 12C22 17.5228 17.5228 22 12 22C6.47715 22 2 17.5228 2 12C2 6.47715 6.47715 2 12 2C17.5228 2 22 6.47715 22 12ZM12 17.75C12.4142 17.75 12.75 17.4142 12.75 17V11C12.75 10.5858 12.4142 10.25 12 10.25C11.5858 10.25 11.25 10.5858 11.25 11V17C11.25 17.4142 11.5858 17.75 12 17.75ZM12 7C12.5523 7 13 7.44772 13 8C13 8.55228 12.5523 9 12 9C11.4477 9 11 8.55228 11 8C11 7.44772 11.4477 7 12 7Z"
                  Stroke="#1C274C"
                  Width="12"
                  Height="12"
                  Stretch="Fill" />
        </Grid>
    </telerik:GridViewDataColumn.Header>
</telerik:GridViewDataColumn>
      </telerik:RadGridView.Columns>
  </telerik:RadGridView>