Questions on UI for WPF Forum

5 answers

502 views

Hello I recently tried to use a CollectionViewSource as the items source for the RadGridView in WPF. I wanted to do so for the ammount of filtering that I needed. Coming from a Windows development background that was "the way" to do it. I am new to my company and I am not trying to fall behind. Is there an example of how to do this? In C# all we have to do to apply a filter is add a filter event handler, but when I would do this the RadGrid would "hiccup." I ended up having to use a dataview object before pulling my hair out. I refuse to write for loops with the invention of generics in the .Net framework. Any and all help is appreciated.

Sean

GridView

answered on 01 Sep 2011

0 answers

113 views

CheckBoxColumn and Toolbar

Hi,

I have a grid with a checkbox column, which is bounded to a boolean property
and a toolbar with a Remove command.

The remove command should be enabled only if at least one element in the grid is checked.
The command logic resides in a View Model.

The problem i'm facing is that the Remove button is updated (enabled/disabled) only after
i move focus from the checkbox cell- I would like the button to update upon check/uncheck the checkbox.

Thank you,
Koby

GridView

asked on 01 Sep 2011

1 answer

173 views

Fixed overlays possible?

I'm hosting the WPF control in a WinForms project. I currently have a label positioned over the map for informational messages, such as 'drawing map' or 'no data selected'. However when the map is resized or panned, the label and/or the map are drawn incorrectly, or not at all. Is there a built-in overlay available in the map that is fixed to screen coordinates, rather than geographic coordinates? Similar to how the mouse position and scale never move.

Map

answered on 01 Sep 2011

3 answers

109 views

EndEdit not firing from TreeViewItem editing

I have a class (lets say CAR) that implements IEditableObject. If i bind a collection of cars to a datagrid, on editing a car, EndEdit on CAR is fired. However, my cars collection is displayed in a treeview. When i edit a CAR using the controls in my treeviewitem , the EndEdit is not raised. It's driving me crazy. Any clues ?

TreeView

answered on 01 Sep 2011

2 answers

271 views

Tile View Item Selection

Hi everybody,

I ask for a specific cuestion about RadTileView. I would like to display the tile items in "read-only" mode (IsEnable = false no valid xD). What I mean is that I present each item without the button for maximize/minimize. For that I took some piece of code I saw in one of your examples. It works properly but a problem raises when a tile item is selected because it is not highlighted. The code appears in the following snippet:

telerik:RadTileView Name="RadTileViewUsers"

ContentTemplate="{StaticResource ContentTemplate}"

ItemTemplate="{StaticResource ItemTemplate}"

MinimizedColumnWidth="150" MinimizedRowHeight="150"

RowHeight="120"

ColumnWidth="147"

MaximizeMode="Zero"

PreviewTileDragStarted="RadTileViewUsers_PreviewTileDragStarted"

ItemContainerStyle="{StaticResource RadTileViewItemStyle}"

PreservePositionWhenMaximized="True" IsVirtualizing="True" IsSelectionEnabled="True" />

And the style (ignoring the colors):

<Style x:Key="RadTileViewItemStyle" TargetType="telerik:RadTileViewItem">

<Setter Property="telerik:RadDragAndDropManager.AllowDrag" Value="True" />

<Setter Property="HorizontalContentAlignment" Value="Stretch" />

<Setter Property="VerticalContentAlignment" Value="Stretch" />

<Setter Property="Background" Value="{StaticResource TileView_Background}" />

<Setter Property="BorderBrush" Value="{StaticResource TileView_OuterBorder}" />

<Setter Property="BorderThickness" Value="1" />

<Setter Property="Padding" Value="7" />

<Setter Property="Template">

<Setter.Value>

<ControlTemplate TargetType="telerik:RadTileViewItem">

<Grid>

<Border x:Name="outerBorder"

Margin="{TemplateBinding Padding}"

Background="{TemplateBinding Background}"

BorderBrush="{TemplateBinding BorderBrush}"

BorderThickness="{TemplateBinding BorderThickness}"

CornerRadius="{StaticResource TileView_OuterBorder_CornerRadius}">

<Border x:Name="outerContainer"

Background="Transparent"

BorderBrush="{StaticResource TileView_InneBorder}"

BorderThickness="{StaticResource TileView_InneBorder_Thickness}"

CornerRadius="{StaticResource TileView_InneBorder_CornerRadius}">

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="Auto" />

<RowDefinition Height="*" />

</Grid.RowDefinitions>

<StackPanel>

<Border Background="{StaticResource TileView_HeaderBackground}"

BorderBrush="{StaticResource TileView_HeaderBorder}"

BorderThickness="{StaticResource TileView_HeaderBorder_Thickness}"

CornerRadius="{StaticResource TileView_HeaderBorder_CornerRadius}"

Padding="10 0 7 0">

<Grid MinHeight="28">

<Border x:Name="GripBarElement" Background="Transparent">

<ContentPresenter x:Name="HeaderElement"

Margin="0,0,10,0"

HorizontalAlignment="Left"

VerticalAlignment="Center"

ContentTemplate="{TemplateBinding HeaderTemplate}" />

</Border>

<!--

<telerik:RadToggleButton x:Name="MaximizeToggleButton"

Command="tileView:TileViewCommands.ToggleTileState"

Style="{StaticResource maximizeToggleStyle}" />

-->

<!--<StackPanel HorizontalAlignment="Right" Orientation="Horizontal">

<telerik:RadButton >Refresh</telerik:RadButton>

<telerik:RadButton >Minimize</telerik:RadButton>

<telerik:RadButton >Maximize</telerik:RadButton>

</StackPanel>-->

</Grid>

</Border>

<Border x:Name="Splitter"

Height="4"

Background="{StaticResource TileView_HeaderBorder_HorizontalSplitterBackground}"

BorderThickness="0"

OpacityMask="{StaticResource TileView_HeaderBorder_HorizontalSplitterOpacityMask}" />

</StackPanel>

<Grid Grid.Row="1" Background="Transparent">

<ContentPresenter x:Name="ContentElement"

Grid.Row="1"

HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"

VerticalAlignment="{TemplateBinding VerticalContentAlignment}"

Content="{TemplateBinding Content}"

ContentTemplate="{TemplateBinding ContentTemplate}" />

</Grid>

<Rectangle x:Name="DisabledVisual"

Grid.RowSpan="2"

Fill="{StaticResource DisabledBrush}"

RadiusX="4"

RadiusY="4"

Visibility="Collapsed" />

</Grid>

</Border>

<Grid x:Name="SelectedItem"

Margin="-1"

Visibility="Collapsed">

<Border Margin="{TemplateBinding Padding}"

BorderBrush="{StaticResource ControlOuterBorder_Selected}"

BorderThickness="2"

CornerRadius="{StaticResource TileView_OuterBorder_CornerRadius}" />

</Grid>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

Note: If I change Visibility value to Visible in Grid "SelectedItem" all the item appear as selected.

Do you have any suggestion for solving my problem?

Thanks in advance.

Eduardo.

TileView

answered on 01 Sep 2011

1 answer

115 views

Multiple Group Descriptor Problem

Hi,

I am applying two group filters in code-behind to a RadGridView. Code : -

Dim trackGroupDescriptor As New Telerik.Windows.Data.GroupDescriptor

trackGroupDescriptor.Member = "TrackName"

trackGroupDescriptor.DisplayContent = "Track"

trackGroupDescriptor.SortDirection = ComponentModel.ListSortDirection.Ascending

AllTrackGrid.GroupDescriptors.Add(trackGroupDescriptor)

Dim FeatureGroupDescriptor As New Telerik.Windows.Data.GroupDescriptor

FeatureGroupDescriptor.Member = "FeatureName"

FeatureGroupDescriptor.DisplayContent = "Feature"

FeatureGroupDescriptor.SortDirection = ComponentModel.ListSortDirection.Ascending

AllTrackGrid.GroupDescriptors.Add(FeatureGroupDescriptor)

The problem I am having is that when the grid loads only one single data row appears inside each of the inner (second) group descriptor, while the actual number of rows which should be present is more. Hoever when I remove the column headers from the 'ShowGroupPanel' while application is running and add them once more, I am able to see all the entries properly. Is there something I am missing in the code?

BTW: Tried adding the descriptor from design-side as well, but having the same issue.

Thanks
Anish George

GridView

answered on 01 Sep 2011

4 answers

102 views

Can't get ListBox drag and drop reordering to work

Hello,

I've trying to follow all the recommendations, samples, tutorials and how-tos I could find about this, and now I'm kind of lost because I can't make anything work... So I put together a sample application (http://pauloqueiroga.com/wpfapplication2.zip) to illustrate my problem.

All I need to drag and drop with a ListBox to redefine the order of the elements.

I started following the steps in this article (http://www.telerik.com/help/wpf/raddraganddrop-within-listbox.html), then I also applied the recommendations of this other one (http://www.telerik.com/help/wpf/raddraganddrop-child-window-non-telerik-popups.html) because my original app had the listbox in a popup window, and I tried a few different tweaks, like the ones recommended here (http://www.telerik.com/community/forums/wpf/draganddrop/drag-drop-mvvm.aspx) but I'm only getting lost.

Do you think you can help me?

Thank you,

PQ.

DragAndDrop

answered on 01 Sep 2011

0 answers

105 views

GetAllNodes method for TreeListView

Is there some sort of GetAllNodes method for the TreeListView, like in the TreeView.

I am trying to do a custom filter on the nodes and need to get all the TreeListView nodes back to set their visibility depending on a value in a TreeListView Column.
Thanks,

TreeListView

asked on 31 Aug 2011

1 answer

438 views

ApplicationCommands Cut/Copy

Hi,

I have a very small program with a radmenu and radrichtextbox to demonstrate the use of applicationCommands.

<Grid>

<Grid.RowDefinitions>

</Grid.RowDefinitions>

<telerik:RadMenu>

<telerik:RadMenuItem Header="Edit">

<telerik:RadMenuItem Header="Cut" Command="ApplicationCommands.Cut"/>

<telerik:RadMenuItem Header="Paste" Command="ApplicationCommands.Paste"/>

</telerik:RadMenuItem>

</telerik:RadMenu>

<telerik:RadRichTextBox Grid.Row="1"/>

</Grid>

Paste commands work very nice, but i'm not able to use Cut or copy commands when i make a selection in the richtextbox. What's is wrong ?

RichTextBox

answered on 31 Aug 2011

2 answers

77 views

Column Must Always be sorted

I have a GridView that always needs to be alphabetically sorted by name, no matter what happens the grid (filtered, sorted by other columns, grouped, new rows added, etc)

Is there any way to do this? I'm guessing it will be in code behind, but I'm not sure where to put what.

GridView

answered on 31 Aug 2011