Questions on UI for WPF Forum

3 answers

1.2K+ views

Keep the ContextMenu open after MenuItem has been clicked?

I've adapted the ContextMenu sample from the sample application where you can set the Visibility for each Column of a RadGridView for my application.
Now it would be nice if the ContextMenu stays open and the user can set the Visiblity of all columns without having to right-click on the header for each single column he wants to show or hide and if the ContextMenu closes when you click outside of it.

Is there a way to do that with RadContextMenu?

Thx

ContextMenu

answered on 01 Feb 2016

1 answer

829 views

How to unsubscribe class handlers?

I need to unsubscribe these events

1. EventManager.RegisterClassHandler(typeof(RadTreeViewItem), Mouse.MouseDownEvent, new MouseButtonEventHandler(OnTreeViewItemMouseDown), false);
2. RegisterClassHandler(typeof(RadTreeView), RadDragAndDropManager.DragInfoEvent, new EventHandler<DragDropEventArgs>(OnTreeViewDragInfo), false);
3. RegisterClassHandler(typeof(RadTreeView), RadDragAndDropManager.DropQueryEvent, new EventHandler<DragDropQueryEventArgs>(OnTreeViewDropQuery), true);

TreeView

answered on 01 Feb 2016

1 answer

196 views

Change the RadialMenu default Button Icon

I've looked around and can't really figure out how to do this. Anyone have any ideas? I just want to change the gear looking image to something like a label. Is this possible?

RadialMenu

answered on 01 Feb 2016

2 answers

192 views

[Solved] RadTabItem Header Two Way binding not working

I have applied an editable radtabitem header as the following

I can see the editable TextBox set the the initial value for the header I can change it , but the Header Property it self still the same , so please what is wrong here?

<Style TargetType="{x:Type socialtracker:EditableTabHeaderControl}">

<Setter Property="Template">

<Setter.Value>

<ControlTemplate TargetType="{x:Type socialtracker:EditableTabHeaderControl}">

<Grid>

<Grid.Triggers>

<EventTrigger RoutedEvent="Grid.DragEnter">

<BeginStoryboard x:Name="GridBeginStoryboard">

<Storyboard>

<DoubleAnimation Storyboard.TargetName="ButtonTransform" Storyboard.TargetProperty="ScaleX" Duration="0:0:0.5" From="1" To="1.1"/>

<DoubleAnimation Storyboard.TargetName="ButtonTransform" Storyboard.TargetProperty="ScaleY" Duration="0:0:0.5" From="1" To="1.1"/>

</Storyboard>

</BeginStoryboard>

</EventTrigger>

<EventTrigger RoutedEvent="Grid.DragLeave">

<StopStoryboard BeginStoryboardName="GridBeginStoryboard"/>

</EventTrigger>

<EventTrigger RoutedEvent="Grid.Drop">

<StopStoryboard BeginStoryboardName="GridBeginStoryboard"/>

</EventTrigger>

</Grid.Triggers>

<TextBox x:Name="PART_EditArea"

Text="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Content, Mode=TwoWay}"

Visibility="Collapsed" />

<ContentPresenter x:Name="ContentPresenter"

Content="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Content, Mode=TwoWay}" />

</Grid>

<ControlTemplate.Triggers>

<Trigger Property="IsInEditMode" Value="True">

<Trigger.Setters>

<Setter TargetName="PART_EditArea" Property="Visibility" Value="Visible" />

<Setter TargetName="ContentPresenter" Property="Visibility" Value="Collapsed" />

</Trigger.Setters>

</Trigger>

</ControlTemplate.Triggers>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

Binding binding = new Binding

{

Path = new PropertyPath("."),

Mode = BindingMode.TwoWay,

};

var editableTabHeaderControl = new FrameworkElementFactory(typeof(EditableTabHeaderControl));

editableTabHeaderControl.SetBinding(EditableTabHeaderControl.ContentProperty, binding);

DataTemplate newDataTemplate = new DataTemplate() { VisualTree = editableTabHeaderControl, };

RadTabItem item = new RadTabItem

{

Tag = new ObservableCollection<Tweet>(),

Name = "SelectedPrint" + _intSelectedPrintTabsCount.ToString(),

Header = " New Tab " + _intSelectedPrintTabsCount.ToString(),

HeaderTemplate = newDataTemplate

};

tbSearchAndFOllow.Items.Insert(tbSearchAndFOllow.Items.Count - 1, (item));

TabControl

answered on 31 Jan 2016

1 answer

257 views

[Solved] Alignment within aggregated column footer

Hello,

I have added a footer to my gridview using the SumFunction. The content of all regular cells is aligned right (numeric values) but I cannot change the alignment of the result in the footer. Everything placed in the footer is rendered with minimal width and ignoring the width of the column, therefor all alignment settings are ignored.

Any advices how to align the content in the footer?

Thanks in advance.

GridView

answered on 29 Jan 2016

1 answer

115 views

Grouping aggregation issue in dynamic columns

I am trying to create dynamic columns by creating column header and assigning the list of string values based on the index to the column databinding and while i am trying to add aggregation to the columns i am facing runtime issue as mentioned below.

"No generic method 'Sum' on type 'System.Linq.Enumerable' is compatible with the supplied type arguments and arguments. No type arguments should be provided if the method is non-generic."

I am unable to resolve this issue after number of workarounds.

Kindly provide me a solution ASAP.

Regards,

Karthikeyan R

GridView

answered on 29 Jan 2016

1 answer

135 views

Cartesian Chart - how to select an item with the 0 value?

Hi *,

I try to use the selection changed Event for the cartesian Chart to notify another view.

It works fine but I recognized that there is no possibility to select an item with the null value (see attached Picture).

Any ideas?

Thx

Rostislaw

ChartView

answered on 29 Jan 2016

1 answer

345 views

[Solved] Sort item as another data from itemssource

I have a radlistbox which has images, title and createddate of them. I showed images and title but i don't know what this listbox sort by. How can i sort listbox by createddate?

Something likes

<telerik:RadGridView.SortDescriptors>
<telerik:SortDescriptor Member="DateCreate" SortDirection="Ascending" />
</telerik:RadGridView.SortDescriptors>

of gridview.

Such as 'example.png', ListBox shows image and title, I want it to sort by created date.

ListBox

answered on 29 Jan 2016

2 answers

131 views

Connection change after dragging container

Hi,

I have simple diagram (container and three items inside) as you can see on before.jpg.

When select container shape and quick drag in other place, connection change as you can see on after.jpg

This is really disturbing, beacuse in diagram with many elements inside container dragging makes it looks unreadable. Connections are arranged senselessly, not the same as user create them but random.

Any ideas?

Diagram

answered on 29 Jan 2016

1 answer

189 views

Timeline SelectedItem = null?

I use the SDK sample - "Custoizing item" to change the item color

but when I try to get SelectedItem. it always be null. it seems it can not be selected

ItemTemplateSelector="{StaticResource ItemTemplateSelector}"

<local:CustomItemTemplateSelector x:Key="ItemTemplateSelector"
InstantItemTemplate="{StaticResource InstantItemTemplate}"
ItemWithDurationTemplate="{StaticResource ItemWithDurationTemplate}"/>

-Jacky

TimeLine

answered on 29 Jan 2016