Questions on UI for WPF Forum

3 answers

1.4K+ views

I need to set checkbox into GridView checkboxcolumn header to implement "Select all" functionallity.

In wpf DataGrid it was simple i could set HeaderColumnTemplate property in xaml and bind to a DataGrid ViewModel object property. Unfortuantly I could not find simillar property or a way to to implement the functionality i need.

GridView

answered on 23 Apr 2018

6 answers

338 views

Replace RadDiagramConnection in the RadDiagram

Hello Telerik,

I'm working with a RadDiagram.

In my case, I have a red rectangle to show to user the limit of the diagram. If he moves a Shape outside of the red rectangle body, we replace the shape inside the rectangle (with an algorithm).

For all shape types, is working find, but not for RadDiagramConnection.

My sub :

Private Sub MoveShape(p_shape As RadDiagramItem)

If (p_shape Is Nothing) Then Exit Sub

If Me._moveShapeCount >= 8 Then 'Used to fix a bug with infinite loop (StackOverFlowException) !

Me._moveShapeCount = 0

Exit Sub

End If

Try

'Memory

Dim shapeAsRectangle As Rect = p_shape.GetActualBounds() 'Used to have the good values when shape is rotated

Dim isRectangleRotated As Boolean = False

Dim isShapePositionModified As Boolean = False

'Rotation management

If TryCast(p_shape, RadDiagramShape) IsNot Nothing Then

'Image / Elipse

isRectangleRotated = (Not ListMissOutAngles.Exists(Function(a) a = DirectCast(p_shape, RadDiagramShape).RotationAngle))

ElseIf TryCast(p_shape, RadDiagramConnection) IsNot Nothing Then

'Me.ReplaceConnectorShape(p_shape) 'Specific treatment because Connection not has rotation angle and can have 2 points inside the line

'Exit Sub

ElseIf TryCast(p_shape, RadDiagramTextShape) IsNot Nothing Then

'Boite de texte

isRectangleRotated = (Not ListMissOutAngles.Exists(Function(a) a = DirectCast(p_shape, RadDiagramTextShape).RotationAngle))

Else

'Kc / Gap / Ref / Calculation / Adiru / FSI

isRectangleRotated = (Not ListMissOutAngles.Exists(Function(a) a = DirectCast(p_shape, RadDiagramShapeBase).RotationAngle))

End If

'Width management

If p_shape.Bounds.Width < (MinX + Me.BoundariesWidth) Then 'Manage cases only if shape width is < to red rectangle width (infinite loop risk)

If shapeAsRectangle.Left < MinX Then

If isRectangleRotated Then

p_shape.Position = New Point((p_shape.Bounds.X + (MinX - shapeAsRectangle.Left)), p_shape.Bounds.Y)

Else

p_shape.Position = New Point((MinX + 2), p_shape.Bounds.Y)

End If

isShapePositionModified = True

End If

If shapeAsRectangle.Right > (MinX + BoundariesWidth) Then

p_shape.Position = New Point((p_shape.Bounds.X + ((Me.BoundariesWidth + MinX) - shapeAsRectangle.Right)), p_shape.Bounds.Y)

isShapePositionModified = True

End If

Else

Exit Sub

End If

'Height management

If p_shape.Bounds.Height < (MinY + BoundariesHeight) Then 'Manage cases only if shape height is < to red rectangle height (infinite loop risk)

If shapeAsRectangle.Top < MinY Then

If isRectangleRotated Then

p_shape.Position = New Point(p_shape.Bounds.X, (p_shape.Bounds.Y + (MinY - shapeAsRectangle.Top)))

Else

p_shape.Position = New Point(p_shape.Bounds.X, (MinY + 2))

End If

isShapePositionModified = True

End If

If shapeAsRectangle.Bottom > (MinY + BoundariesHeight) Then

If isRectangleRotated Then

p_shape.Position = New Point(p_shape.Bounds.X, (p_shape.Bounds.Top - (shapeAsRectangle.Bottom - BoundariesHeight) + MinY))

Else

p_shape.Position = New Point(p_shape.Bounds.X, (p_shape.Bounds.Y - (p_shape.Bounds.Bottom - (MinY + BoundariesHeight)) - 2))

End If

isShapePositionModified = True

End If

Else

Exit Sub

End If

If isShapePositionModified Then

Me._moveShapeCount += 1

Me.MoveShape(p_shape)

End If

Catch ex As Exception

If Debugger.IsAttached Then Debugger.Break()

MAATrace.Log("MoveShape EXCEPTION", "Error in MoveShape() (top-left position : '" + p_shape.Position.ToString() + "') : " + ex.Message)

End Try

End Sub

For example, consider the first case => If shapeAsRectangle.Left < MinX

For all shapes, the p_shape.Position is set to 22, but for RadDiagramConnection, the value is not updated.

Do you know why the position is not updated for RadDiagramConnection ? And how can I resolve it ?

Furthermore, I should to be able to know if there is a rotation for the shape which encircle the RadDiagramConnection (the If, elseif, elseif... is a draft copy)

Thanks a lot.

Diagram

answered on 19 Apr 2018

1 answer

158 views

Dragon speech recognition for RadComboBox

I'm not able to get Dragon select drop-down options.

<telerik:RadComboBox Grid.Row="5" Grid.Column="1" Padding="1" Grid.ColumnSpan="3" Name="SearchComboBox"
AutomationProperties.Name="Search:"
MaxHeight="20"
MinWidth="270"
VerticalAlignment="Center"
IsEditable="True"
IsReadOnly="False"
CanAutocompleteSelectItems="False"
CanKeyboardNavigationSelectItems="False"
IsTextSearchEnabled="False"
StaysOpenOnEdit="False"
OpenDropDownOnFocus="False"
IsMouseWheelEnabled="True"
MaxDropDownHeight="200"
Focusable="True"
IsTabStop="True"
TabIndex="101"
ItemTemplate="{StaticResource GridLikeDataTemplate}"
TextBoxStyle="{StaticResource CustomComboTextBoxStyle}"
ItemsSource="{Binding List}"
KeyDown="General_KeyDown"
ScrollViewer.ScrollChanged="SearchCombo_ScrollChanged"
TextBoxBase.TextChanged="SearchCombo_TextChanged"
SelectionChanged="SearchCombo_SelectionChanged" >


</telerik:RadComboBox>

Template:

I used Inspect.exe and verified that the "Name" property was set propertly, but Click <PROPERTY NAME> is not working. Please let me know if there is anything I missed. Thank you in advance.

ComboBox

answered on 19 Apr 2018

4 answers

61 views

Aggregate functions that uses the results of sibling functions

Does anybody know if the results from sibling aggregate functions can be used as input values for another function?

I would like to display the following grid:

Day 1

                          Aggr1    Aggr2    Diff
  Shop              v1           v2         v1-v2
       Item A        p1A         p2A
       Item B        p1B         p2B

Is there any way to access the Aggr1 and Aggr 2 results in the Diff aggregate?

PivotGrid

answered on 19 Apr 2018

1 answer

214 views

RadRibbonRadioButton Command binding not working

Here's my code in which I'm binding the command of RadRibbonRadioButton, but it is not working:

<telerik:RadRibbonGroup Header="Display X/Y in" FontSize="13">

<telerik:RadCollapsiblePanel>

<telerik:RadRibbonRadioButton x:Name="MapCoordinates"

IsChecked="{Binding MapCoordinatesChecked}"

CollapseToSmall="WhenGroupIsSmall"

CollapseToMedium="WhenGroupIsMedium"

telerik:ScreenTip.Description="Map Coordinates"

telerik:ScreenTip.Title="Map Coordinates"

Size="Large"

Text="Map Coordinates"

Command="{Binding RibbonControlRadioButtonClickedCommand}"

CommandParameter="{Binding ElementName=MapCoordinates}"

SmallImage="Resources\MapCoordinates.png"

LargeImage="Resources\MapCoordinates.png" />

</telerik:RadCollapsiblePanel>

</telerik:RadRibbonGroup>

Kindly let me know, how can I bind its command in MVVM architecture.

Regards,

Tayyaba

RibbonView and RibbonWindow

answered on 19 Apr 2018

1 answer

174 views

Excited about Telerik Virtual Classroom, where to find it?

Does anyone know how we access the Virtual Classroom as a Telerik subscriber? I'm especially interested in the ones on WPF. The information page says:

The recorded on-demand training videos will be available in Your Account shortly after the corresponding live training is complete and all training sessions will be refreshed after each major release.

I've looked all through my account and haven't seen anything related to the training. Has anyone figured out how we access it? (I have the DevCraft bundle)

General Discussions

answered on 19 Apr 2018

1 answer

225 views

Setting Opacity on a multi-LineSeries Chart using a custom Behavior

I created a test application that works like I want it to. However now that I am trying to implement it the same way into an existing application, the opacity value I am setting is being ignored. This complexity of this custom control (using a RadCartesianChart) is pretty crazy. I just can't find out what is causing it to ignore what I am setting.

Attached is what the chart looks like without and with mouse-overing a LineSeries. The idea is to highlight the LineSeries the trackball is describing.

Below is how I am setting the opacity in a custom behavior. I have even tried
- setting the opacity of each series on the RadCartesianChart itself
- setting the opacity on the style being used for the LineSeries
- setting up a style trigger to set the opacity value when the IsSelected property is modified in the behavior

Does anyone have an ideas?

01.private static void ChartTrackBallBehavior_TrackInfoUpdated(object sender, TrackBallInfoEventArgs e)

02.{

03. ChartDataContext context = e.Context;

04.

05. DataPointInfo closestDataPointInfo = context.DataPointInfos

06. .OrderBy(x => Math.Abs(e.Context.TouchLocation.Y - x.DataPoint.LayoutSlot.Y)).FirstOrDefault();

07.

08. foreach (DataPointInfo dataPointInfo in context.DataPointInfos)

09. {

10. if (dataPointInfo == closestDataPointInfo)

11. {

12. if (dataPointInfo?.DataPoint.DataItem is ChartItem chartItem)

13. {

14. ChildChartViewModel childChartViewModel = dataPointInfo.Series.Chart.DataContext as ChildChartViewModel;

15.

16. string time = chartItem.XValue.ToString(childChartViewModel?.LabelFormat ?? string.Empty);

17. string value = chartItem.YValue.ToString(childChartViewModel?.VerticalAxis.DataFormatString ?? string.Empty);

18.

19. dataPointInfo.DisplayContent = $"({time}, {value})";

20. dataPointInfo.Series.Opacity = 1;

21. dataPointInfo.Series.Tag = "Add";

22. }

23. }

24. else

25. {

26. dataPointInfo.Series.Opacity = 0.33;

27. dataPointInfo.Series.Tag = "Remove";

28. }

29. }

30.

31. e.Context.DataPointInfos.RemoveAll(x => x.Series.Tag.ToString() == "Remove");

32.}

ChartView

answered on 18 Apr 2018

1 answer

57 views

filter radgridview with different values [on hold]

I have the following radgridview. In the alert column the filter takes out a 0 or a 1, which is the data that is collected from the database.

How could I change 0 for no alert and 1 for alert?

Thank you very much

<telerik:RadGridView Name="rgvExplorador"

GridLinesVisibility="Both"

GroupPanelBackground="LightGray"

GroupPanelForeground="Black"

ShowSearchPanel="True"

ShowGroupPanel="False"

d:LayoutOverrides="Height"

Grid.Row="1"

FontSize="10.667"

CanUserResizeColumns="False"

CanUserFreezeColumns="False"

AutoGenerateColumns="False"

SelectionMode="Single"

ItemsSource="{Binding}"

RowIndicatorVisibility="Collapsed" >

<telerik:RadGridView.GroupDescriptors>

<telerik:GroupDescriptor Member="areaTexto" SortDirection="Ascending" />

<telerik:GroupDescriptor Member="clasificacionTexto" SortDirection="Ascending" />

</telerik:RadGridView.GroupDescriptors>

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn Header="Área" DataMemberBinding="{Binding areaTexto}" Width="70" IsReadOnly="True" IsGroupable="True" IsVisible="False"/>

<telerik:GridViewDataColumn Header="Clasificación" DataMemberBinding="{Binding clasificacionTexto}" Width="140" IsReadOnly="True" IsGroupable="True" IsVisible="False"/>

<telerik:GridViewDataColumn Header="Título" DataMemberBinding="{Binding descripcion}" IsReadOnly="True" TextWrapping="Wrap" Width="300">

<telerik:GridViewColumn.ToolTipTemplate>

<DataTemplate>

<StackPanel Orientation="Vertical" Width="300" MinHeight="80" Background="White">

<TextBlock Text="Descripción:" FontWeight="Bold"/>

<TextBlock Text="{Binding Objetivo}" TextWrapping="Wrap"/>

</StackPanel>

</DataTemplate>

</telerik:GridViewColumn.ToolTipTemplate>

</telerik:GridViewDataColumn>

<telerik:GridViewDataColumn Header="Nº" DataMemberBinding="{Binding IdAlerta}" IsReadOnly="True" Width="auto" IsGroupable="True"/>

<telerik:GridViewDataColumn x:Name="colHV" Header="Info dimensional" DataMemberBinding="{Binding HvInfoDesc}" IsReadOnly="True" />

<telerik:GridViewDataColumn x:Name="colPatron" Header="Patrón" DataMemberBinding="{Binding HF_Referencia}" IsReadOnly="True" />

<telerik:GridViewDataColumn Header="Período" DataMemberBinding="{Binding FechaDatos}" DataFormatString="{}{0:MMM/yyyy}" Width="70" IsReadOnly="True"/>

<telerik:GridViewDataColumn Header="Entidad" DataMemberBinding="{Binding Entidad}" IsReadOnly="True" Width="70" />

<telerik:GridViewDataColumn IsReadOnly="True" Width="30" DataMemberBinding="{Binding EsAlerta}" IsGroupable="True" ShowDistinctFilters="True" >

<telerik:GridViewDataColumn.CellTemplate>

<DataTemplate>

<Image>

<Image.Style>

<Style TargetType="{x:Type Image}">

<Setter Property="Source" Value="/Mercvrio.Style;component/Images/Blank.png" />

<Style.Triggers>

<DataTrigger Value="1" Binding="{Binding EsAlerta}">

<Setter Property="Source" Value="/Mercvrio.Style;component/Images/WarningRed.png"/>

</DataTrigger>

<DataTrigger Value="1" Binding="{Binding AlertaPositiva}">

<Setter Property="Source" Value="/Mercvrio.Style;component/Images/Warning.png"/>

</DataTrigger>

<DataTrigger Value="0" Binding="{Binding EsAlerta}">

<Setter Property="Source" Value="/Mercvrio.Style;component/Images/Blank.png"/>

</DataTrigger>

</Style.Triggers>

</Style>

</Image.Style>

</Image>

</DataTemplate>

</telerik:GridViewDataColumn.CellTemplate>

</telerik:GridViewDataColumn>

GridView

answered on 18 Apr 2018

1 answer

258 views

Attempt to get PART_EditableTextBox for RadComboBox fails

I'm currently using the demo version of UI WPF to evaluate the controls, and have placed a RadComboBox into my application by declaring a UserControl of that type in xaml (see attached file).

In the codeback, I then try to get the PART_EditableTextBox, so that I can set some event handlers for it. This works using the Microsoft ComboBox, but with the RadComboBox, during execution the call to get the TextBox fails, leaving my variable with a value of null. See attached file. As you can see, the referenced delegates are defined. textBox is defined at class level as in the other screenshot.

Why is this happening?

ComboBox