Questions on UI for WPF Forum

1 answer

169 views

Items disappearing on shape file while zooming out

Hello,

We are currently using the radmap control to display a shape file (1MB) showing a map of the world.

The virtualization engine is also used in order to maximize the performance for this relatively large shape file.

It is used as follow (largely inspired by telerik examples):

<telerik:VisualizationLayer

MapShapeVisualizationCreated="VisualizationLayer_MapShapeVisualizationCreated"

MapShapeVisualizationRemoved="VisualizationLayer_MapShapeVisualizationRemoved"

AutoHighlightMapShape="False" >

<telerik:VisualizationLayer.VirtualizationSource>

<telerik:MapShapeDataVirtualizationSource x:Name="VirtualisationSource" BusyIndicator="{Binding ElementName=busyIndicator}">

<telerik:MapShapeDataVirtualizationSource.Reader>

<telerik:AsyncShapeFileReader ReadShapeDataCompleted="AsyncShapeFileReader_ReadShapeDataCompleted" />

</telerik:MapShapeDataVirtualizationSource.Reader>

</telerik:MapShapeDataVirtualizationSource>

</telerik:VisualizationLayer.VirtualizationSource>

<telerik:VisualizationLayer.ZoomLevelGridList>

<telerik:ZoomLevelGrid MinZoom="5" />

<telerik:ZoomLevelGrid MinZoom="6" />

<telerik:ZoomLevelGrid MinZoom="7" />

<telerik:ZoomLevelGrid MinZoom="8" />

<telerik:ZoomLevelGrid MinZoom="9" />

<telerik:ZoomLevelGrid MinZoom="10" />

<telerik:ZoomLevelGrid MinZoom="11" />

<telerik:ZoomLevelGrid MinZoom="12" />

</telerik:VisualizationLayer.ZoomLevelGridList>

<telerik:VisualizationLayer.ItemTemplate>

<DataTemplate>

<Rectangle Width="10"

Height="10"

telerik:MapLayer.Location="{Binding}"

Fill="Transparent"

MouseMove="Rectangle_MouseMove"

StrokeThickness="2" telerik:MapLayer.ZoomRange="5,12">

<!--<telerik:MapLayer.HotSpot>

<telerik:HotSpot X="0.5" Y="0.5" />

</telerik:MapLayer.HotSpot>-->

</Rectangle>

</DataTemplate>

</telerik:VisualizationLayer.ItemTemplate>

</telerik:VisualizationLayer>

A menu is displayed when the map is right clicked. It allows to add a start or a waypoint. A line is traced between the rectangles item

<telerik:RadMap.ContextMenu>

<ContextMenu>

<MenuItem Click="StartNewRouteMenuItem_Click" Header="Start new route" />

<MenuItem x:Name="AddWayPointMenuItem"

Click="AddWayPointMenuItem_Click"

Header="Add way point"

IsEnabled="False" />

<MenuItem x:Name="EndRouteMenuItem"

Click="EndRouteMenuItem_Click"

Header="end route"

IsEnabled="False" />

<MenuItem x:Name="ResetMenuItem"

Click="ResetMenuItem_Click"

Header="Reset route"

IsEnabled="True" />

</ContextMenu>

Firts issue :

When the map is right clicked the menu is shown, but the shape file disappears.

Moving the map will correct this.

Second issue :

While zooming out the lines and the rectangle disappears , while the shape file is correctly displayed.

Here is apart of the code behind :

/// <summary>

/// Handles the MouseRightButtonDown event of the WorldRadMap control.

/// </summary>

/// <param name="sender">The source of the event.</param>

/// <param name="e">The <see cref="System.Windows.Input.MouseButtonEventArgs" /> instance containing the event data.</param>

private void WorldRadMap_MouseRightButtonDown(object sender, MouseButtonEventArgs e)

{

previousMouseClickPos = lastMouseClickPos;

lastMouseClickPos = e.GetPosition(WorldRadMap);

Point1 = Point2;

Point2 = Location.GetCoordinates(WorldRadMap, lastMouseClickPos);

}

/// <summary>

/// Adds the point to map.

/// </summary>

/// <returns></returns>

private bool AddPointToMap()

{

var location = Location.GetCoordinates(WorldRadMap, lastMouseClickPos);

if (GribAPI_GTT.IsOnContinent(location.Longitude, location.Latitude))

{

MessageBox.Show("WayPoint must be in open sea");

return false;

}

this.visualizationlayer.Items.Add(Location.GetCoordinates(WorldRadMap, lastMouseClickPos));

return true;

}

/// <summary>

/// Draws the line.

/// </summary>

private void DrawLine()

{

LineData line = new LineData()

{

Point1 = Point1,

Point2 = Point2,

ShapeFill = new MapShapeFill()

{

Stroke = new SolidColorBrush(Colors.Purple),

StrokeThickness = 2,

}

};

this.visualizationlayer.Items.Add(line);

}

Is there a way that the items and the shapefile keep displaying

Map

answered on 08 Sep 2016

5 answers

243 views

ScatterPointSeries - How to get series parent DataContext?

Hi,

I'm trying to create a solution based off the "Dynamic Number of Series" sample in the RadChartView documentation. My xaml looks like this:

<telerik:RadCartesianChart x:Name="chart">
     <telerik:RadCartesianChart.HorizontalAxis>
           <telerik:LinearAxis Minimum="{Binding XAxisMin}" Maximum="{Binding XAxisMax}">
                <telerik:LinearAxis.LabelStyle>
                     <Style TargetType="TextBlock">
                          <Setter Property="Foreground" Value="{DynamicResource MainForegroundColor}"/>
                     </Style>
                </telerik:LinearAxis.LabelStyle>
           </telerik:LinearAxis>
      </telerik:RadCartesianChart.HorizontalAxis>
      <telerik:RadCartesianChart.VerticalAxis>
            <telerik:LinearAxis Minimum="{Binding YAxisMin}" Maximum="{Binding YAxisMax}">
                 <telerik:LinearAxis.LabelStyle>
                      <Style TargetType="TextBlock">
                           <Setter Property="Foreground" Value="{DynamicResource MainForegroundColor}"/>
                       </Style>
                   </telerik:LinearAxis.LabelStyle>
               </telerik:LinearAxis>
           </telerik:RadCartesianChart.VerticalAxis>
           <telerik:RadCartesianChart.SeriesProvider>
               <telerik:ChartSeriesProvider Source="{Binding MyVMs}">
                   <telerik:ChartSeriesProvider.SeriesDescriptors>
                       <telerik:ScatterSeriesDescriptor ItemsSourcePath="PointVMs" XValuePath="XValue" YValuePath="YValue">
                           <telerik:ScatterSeriesDescriptor.Style>
                               <Style TargetType="telerik:ScatterPointSeries">
                                   <Setter Property="PointTemplate">
                                       <Setter.Value>
                                           <DataTemplate>
                                               <Ellipse Width="10"
                                                        Height="10"
                                                        Fill="{Binding Path=DataItem.HighlightColor, RelativeSource={RelativeSource AncestorType=telerik:ChartSeriesProvider}}" />
                                           </DataTemplate>
                                       </Setter.Value>
                                   </Setter>
                               </Style>
                           </telerik:ScatterSeriesDescriptor.Style>
                       </telerik:ScatterSeriesDescriptor>
                   </telerik:ChartSeriesProvider.SeriesDescriptors>
               </telerik:ChartSeriesProvider>
           </telerik:RadCartesianChart.SeriesProvider>
</telerik:RadCartesianChart>

I can't seem to find the right combination to gain access to the MyVM.HighlightColor so I can set the Fill in my DataTemplate. Is there a way to do this or is it a case of having to add the color over and over again inside each PointVM?

Thanks for an guidance,

Craig

ChartView

answered on 08 Sep 2016

1 answer

144 views

How to change the content of a RadTransitionControl.ContentTemplate

I have a listBox related with RadTransitionControl , when i change selected item of the listBox , i want to change all the content in the RadTransitionControl

(Inject an other userControl)

TransitionControl

answered on 08 Sep 2016

3 answers

258 views

GridViewExpressionColumn and Aggregating

Hi,

How can I add a sumfunction to a GridViewExpression column?
for a GridViewDataColumn I simply add:

<telerik:GridViewDataColumn.AggregateFunctions>
<telerik:SumFunction />
</telerik:GridViewDataColumn.AggregateFunctions>

and it works 100%, but when I do it for the same for GridViewExpressionColumn:

<telerik:GridViewExpressionColumn.AggregateFunctions>
<telerik:SumFunction />
</telerik:GridViewExpressionColumn.AggregateFunctions>

I get an error "No Generic method 'Sum' on type 'System.linq.Enumerable' is compatible with the supplied type arguments".
The data in GridViewDataColumns is of Type Decimal, do i need to set the type of the expression column? if so, how?

thanks.

regards,
Matthew

GridView

answered on 07 Sep 2016

1 answer

194 views

Ctrl+A not work without selecting any item(s)

Hello Telerik,

I'm using RadListBox with binding ItemsSource to CollectionViewSource and switched off IsSynchronizedWithCurrentItem...

And it's nessesary to give option select all within keyboard manipulation.

What can you suggest in this case?

With regards, Anatoliy

ListBox

answered on 07 Sep 2016

8 answers

299 views

The thumbnail loading is slow

Hi, I create a diagrampane. When display in the docking, the Diagram shows fast, but the thumbnail shows after a few seconds. Perhaps the diagram has many items, have some method for display the two synchronously?

thanks

Main code:

RadDocumentPane diagramPane = new RadDocumentPane();

MyUserControl diagramUserControl = new MydiagramUserControl(diagram , true);

MyWindow.PaneGroup.Items.Add(diagramUserControl);

MydiagramUserControl code:

MydiagramUserControl(RadDiagram diagram, bool isNeedThumbnail){

InitializeComponent();

this.diagramPane.Children.Add(diagram);

if(isNeedThumbnail){

RadDiagramThumbnail diagramThumbnail = new RadDiagramThumbnail(){Diagram = diagram};

diagramThumbnail.VerticalAlignment = VerticalAlignment.Bottom;

diagramThumbnail.HorizontalAlignment = HorizontalAlignment.Left;

diagramThumbnial.Width = 150;

diagramThumbnail.Height = 100;

this.diagramPane.Children.Add(diagramThumbnail);

}

Diagram

answered on 07 Sep 2016

2 answers

501 views

RadNumericUpDown does not fire propertychanged when empty

Hi,

I encountered an issue with the RadNumericUpDown control. I have defined the UpdateValueEvent to PropertyChanged, this works fine as long as I am entering valid numeric values. But in case that I just delete the whole text from the NumericUpDown control the value is not updated in my viewmodel because the setter for the binded value is not called. When I leave the RadNumericUpDown afterwards the setter is called correctly and the value in my viewmodel is set to null.

This is my definition in XAML

<telerik:RadNumericUpDown Value="{Binding DurationFrom, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
               ValueFormat="Numeric" NumberDecimalDigits="0" ShowButtons="True"
               Minimum="1" Maximum="{Binding DurationTo, Mode=OneWay, TargetNullValue=1.0}"
               NullValue="" UpdateValueEvent="PropertyChanged" />

Is this a known issue with the NumericUpDown control and is there any workaround for this?

Regards,

Micha

NumericUpDown

answered on 07 Sep 2016

10 answers

762 views

RadGridView Column Binding to Second level property

Hi,

I'm trying to bind the RadGridView column to a second level property. This is my code:

...
<telerik:RadGridView x:Name="GridView" Loaded="GridView_Loaded" ItemsSource="{Binding ViewMember.TelerikView}"/>
...

private void GridView_Loaded(object sender, RoutedEventArgs e)
{
    foreach (var f in ViewMember.Data.Fields)
    {
        var col = new Telerik.Windows.Controls.GridViewDataColumn();
        col.Header = f;
        col.DataMemberBinding = new Binding(f);//f is Country.Name
col.UniqueName = f;
        GridView.Columns.Add(col);
    }
}

When f is ID it works fine, but when its Country.Name the column is showed but the row is empty. How can i fix this behavior?

Thanks!

GridView