Questions on UI for WPF Forum

5 answers

296 views

Severe Performance Problem When Changing Zoom Levels?

Hello everyone,

I'm having some trouble with the WPF Map Control. On my application I'm generating about 2636 polygons (triangles) and attaching them to the Information Layer.

Each MapPolygon is being created like so:

var polygon=New MapPolygon

{

Fill = currentStyle.FillColor,

Stroke = currentStyle.Stroke,

StrokeThickness = currentStyle.Thickness,

Opacity = currentStyle.Opacity,

Points = new LocationCollection()

{

new Location(point.Y1, point.X1),

new Location(point.Y2, point.X2),

new Location(point.Y3, point.X3)

}

};

This operation works fine and my triangles are properly generated on the map. Pan operations are fluid and without trouble, but zooming operations (in and out) raise severe performance issues, from enourmous memory/processor consumption to a sort of "delay" between the time that I issue the zoom order and the time the order gets carried out by the map.

This problem only occurs with >1000 polygons on the map, regardless of type (rectangles, triangles, etc.).

So, I would like your help on this. First I must ask if there is any known performance limitation/cap related with this matter (gernerating polygons on the map)? If not, can you tell me what might be the cause for this trouble?
And secondly, what avaible workarounds are there that won't imply using a dynamic layer over the map to manage the objects?

Thanks in advance for the help and for the time taken with this matter!

Map

answered on 23 Oct 2012

4 answers

308 views

Scheduleview resource error

I am trying a simple example of using resource groups as per "Programming Telerik ScheduleVIew for WPF/Silverlight (part 1) with simple mods.
I get the following error on the lines that define the groups as below:

Error 1 Only public or internal classes can be used within markup. 'Resource' type is not public or internal.

<telerik:RadScheduleView.GroupDescriptionsSource>

<telerik:GroupDescriptionCollection>

<telerik:ResourceGroupDescription ResourceType="Activity"/>

</telerik:GroupDescriptionCollection>

</telerik:RadScheduleView.GroupDescriptionsSource>

<telerik:RadScheduleView.ResourceTypesSource>

<telerik:ResourceTypeCollection>

<telerik:ResourceType Name="Activity"> (ERROR IS HERE)

<telerik:Resource ResourceName="Morning Meds" />

<telerik:Resource ResourceName="Evening Meds" />

</telerik:ResourceType>

</telerik:ResourceTypeCollection>

</telerik:RadScheduleView.ResourceTypesSource

>





The control worked until I inserted the group code above.





Here is entire XAML

<iCare:BaseUserControl x:Class="POCAClient.Views.TodaysActivities"
                       xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                       xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
                        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                       xmlns:icc="clr-namespace:POCAClient.UserControls"
                       xmlns:iCare="clr-namespace:POCAClient"
                       xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
                       xmlns:local="clr-namespace:POCAClient.Views"
                        xmlns:schedule="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.ScheduleView"
                       mc:Ignorable="d" d:DesignHeight="450" d:DesignWidth="800"
                       Loaded="BaseUserControl_Loaded" > 
    <iCare:BaseUserControl.Resources> 
        <Style x:Key="ActivityListContainer" TargetType="{x:Type ListBoxItem}" > 
            <Setter Property="Template"> 
                <Setter.Value> 
                    <ControlTemplate TargetType="{x:Type ListBoxItem}"> 
                        <ToggleButton Width="{Binding ActualWidth, ElementName=ItemsList}" x:Name="MainOuterToggleButton" Height="68" IsChecked="{Binding Path=IsSelected, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBoxItem}}}"> 
                            <DockPanel DockPanel.Dock="Left" x:Name="PanelListItemBG" HorizontalAlignment="Left" Width="{Binding ActualWidth, ElementName=MainOuterToggleButton}" Height="{Binding ActualHeight,ElementName=MainOuterToggleButton}"> 
                                <Image x:Name="AppointmentImage" DockPanel.Dock="Left" Margin="4,4,2,3" Style="{StaticResource ListBoxItemPhotoStyle}" Source="{Binding Path=AppointmentImage}"></Image> 
                                <TextBlock x:Name="StartTimeTextBlock" DockPanel.Dock="Top" Margin="6,4,2,3" TextTrimming="CharacterEllipsis" Style="{StaticResource ScrollingListItemHeaderStyle }" ToolTip="{Binding Path= Start, StringFormat= hh:mm tt}"  Text="{Binding Path= Start, StringFormat= hh:mm tt}" /> 
                                <TextBlock x:Name="SubjectTextBlock" DockPanel.Dock="Top" Margin="6,2,2,3" TextTrimming="CharacterEllipsis" Style="{StaticResource ScrollingListItemHeaderStyle}" ToolTip="{Binding Path= Subject}" Text="{Binding Path= Subject}" /> 
                            </DockPanel> 
                        </ToggleButton> 
                        <ControlTemplate.Triggers> 
                            <Trigger Property="IsSelected" Value="true"> 
                                <Setter TargetName="PanelListItemBG" Property="Style" Value="{StaticResource SelectedListItemDockPanel}"/> 
                                <Setter TargetName="StartTimeTextBlock" Property="Style" Value="{StaticResource SelectedListItemHeaderTextBlock}" /> 
                                <Setter TargetName="SubjectTextBlock" Property="Style" Value="{StaticResource SelectedListItemSubHeaderTextBlock}" /> 
                            </Trigger> 
                            <Trigger Property="IsSelected" Value="false"> 
                                <Setter TargetName="PanelListItemBG" Property="Style" Value="{StaticResource DeselectedListItemDockPanel}"/> 
                                <Setter TargetName="StartTimeTextBlock" Property="Style" Value="{StaticResource DeselectedListItemHeaderTextBlock}" /> 
                                <Setter TargetName="SubjectTextBlock" Property="Style" Value="{StaticResource DeselectedListItemSubHeaderTextBlock}" /> 
                            </Trigger> 
                        </ControlTemplate.Triggers> 
                    </ControlTemplate> 
                </Setter.Value> 
            </Setter> 
        </Style> 
    </iCare:BaseUserControl.Resources> 
  
    <Border  BorderBrush="{StaticResource BorderBorderBrush}"  BorderThickness="1" 
                    Background="{StaticResource GridBodyBrush}" DockPanel.Dock="Top" Margin="5"> 
        <DockPanel LastChildFill="True"> 
            <Grid> 
                <Grid.ColumnDefinitions> 
                    <ColumnDefinition Width="373*" MinWidth="180"  MaxWidth="520" ></ColumnDefinition> 
                    <ColumnDefinition Width="415*"></ColumnDefinition> 
                </Grid.ColumnDefinitions> 
                <Grid.RowDefinitions> 
                    <RowDefinition Height="40"></RowDefinition> 
                    <RowDefinition Height="*"></RowDefinition> 
                </Grid.RowDefinitions> 
                <DockPanel Grid.Column="0" Grid.Row="0" Grid.ColumnSpan="2"> 
                    <StackPanel Orientation="Horizontal" Grid.ColumnSpan="2" DockPanel.Dock="Top" Height="30" Margin="20,5,5,5" HorizontalAlignment="Left" VerticalAlignment="Center"> 
                        <TextBlock Style="{StaticResource PageHeaderTextBlockStyle}" Grid.ColumnSpan="2" FontSize="24" Foreground="#202C21" Text="Today is: "></TextBlock> 
                        <TextBlock  x:Name="txtTodayDate" Style="{StaticResource PageHeaderTextBlockStyle}" Grid.ColumnSpan="2" Text="df sdfns dnfnsdf sdfsdf nsdfdf nsdfnsdf sdf" FontSize="24" Foreground="#202C21" DockPanel.Dock="Top"/> 
                    </StackPanel> 
                </DockPanel> 
                <DockPanel Grid.Row="1" Grid.ColumnSpan="2" Margin="0,0,415,0" HorizontalAlignment="Left" > 
                    <telerik:RadScheduleView Name="radScheduleViewToday" Width="630" AppointmentsSource="{Binding Appointments}" > 
                       <telerik:RadScheduleView.GroupDescriptionsSource> 
                            <telerik:GroupDescriptionCollection> 
                                <telerik:ResourceGroupDescription ResourceType="Activity"/> 
                            </telerik:GroupDescriptionCollection> 
                        </telerik:RadScheduleView.GroupDescriptionsSource> 
                        <telerik:RadScheduleView.ResourceTypesSource> 
                            <telerik:ResourceTypeCollection> 
                                <telerik:ResourceType Name="Activity"> 
                                    <telerik:Resource ResourceName="Morning Meds" /> 
                                    <telerik:Resource ResourceName="Evening Meds" /> 
                                </telerik:ResourceType> 
                            </telerik:ResourceTypeCollection> 
                        </telerik:RadScheduleView.ResourceTypesSource> 
                        <telerik:RadScheduleView.ViewDefinitions> 
                            <telerik:TimelineViewDefinition MinorTickLength="1h" MajorTickLength="2h" VisibleDays="1"/> 
                        </telerik:RadScheduleView.ViewDefinitions> 
                    </telerik:RadScheduleView> 
                </DockPanel> 
                <DockPanel Grid.Column="1" Grid.Row="1" Margin="42,0,0,0"> 
                    <Border BorderBrush="{StaticResource GridBorderBrush}" BorderThickness="2" Margin="3"
                Background="{StaticResource GridBodyBrush}" Width="384"> 
                        <Grid> 
                            <Grid.RowDefinitions> 
                                <RowDefinition Height="*"/> 
                            </Grid.RowDefinitions> 
  
                            <DockPanel LastChildFill="True" Margin="10,15,0,30" DockPanel.Dock="Left" > 
                                <TextBlock x:Name="txtNotesHeader"  DockPanel.Dock="Top" Margin="3" Foreground="#0C4F95" FontSize="17" FontWeight="Bold" Text="Notes" TextWrapping="WrapWithOverflow"/> 
                                <ScrollViewer DockPanel.Dock="Right" Style="{StaticResource EasyAccessScrollViewer}" HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto"> 
                                    <TextBlock  x:Name="txtNotes" Style="{StaticResource TextBlockStyle}" Margin="3,0,10,0" TextWrapping="WrapWithOverflow"></TextBlock> 
                                </ScrollViewer> 
                            </DockPanel> 
                        </Grid> 
                    </Border> 
                </DockPanel> 
            </Grid> 
        </DockPanel> 
    </Border> 
</iCare:BaseUserControl>

ScheduleView

answered on 23 Oct 2012

4 answers

553 views

Outer background when window is modal opened

Hi!,

I was watching a sample when a radWindow is opened in modal way. My question is, if it's possible to change the darkened color due to our app has a background little darkened (xbap) and summarized with telerik control gets too much darkened

thanks

Window

answered on 23 Oct 2012

1 answer

126 views

Export to Excel in Q3 2012

Export from RadGridView til Excel is still a bit strange:

I used the Telerik Wpf example "Word, Excel, CSV Export.

1. I choose "Excel" and I save te file as ExcelTest.xls
- I get a warning about the format when opening the file in Excel
- Most of the data is changed to text/string.
2. I choose "Excel" and I save te file as ExcelTest.xml
- I get a warning about the format when opening the file in Excel
- Most of the data is changed to text/string.
3. I choose "ExcelML" and I save te file as ExcelTest.xml
- All the data is changed to text/string.

What I expected is:
- No warning from Excel about the format.
- Numbers stay numbers, dates stay dates, money stays money... and so on.

What am I doing wrong?

GridView

answered on 23 Oct 2012

3 answers

206 views

No Insert Adorner for ListBoxDragDropBehavior?

I don't see any insert adorner support in ListBoxDragDropBehavior. (or at least it is not something can be done as simple as ScreenshotDragVisualProvider). Being able to tell where to drop visually is extremely important to our application. If someone shed some light on this area I will be appreciated.

ListBox

answered on 23 Oct 2012

14 answers

616 views

How to maximize the RadPane

Can the RadPane be maximised or shown as full-screen window?

Docking

answered on 23 Oct 2012

4 answers

179 views

[Solved] Printing support in RadTreeView

Is it possible to print the contents of the RadTreeView?

TreeView

answered on 22 Oct 2012

4 answers

440 views

Selecting from a list of options when the property is dynamically generated

I am binding my RadPropertyGrid to an object that contains a "property bag" - in other words, the object has a collection of child objects that represent the properties displayed in the property grid. This collection is populated from a database so there is no knowledge at all in the application of the names, values, etc. for any of the 'properties'.

The object subclasses CustomTypeDescriptor, overrides GetProperties and returns a custom PropertyDescriptor for each of the items in the collection. All of this works great except for cases where I need the user to select from a list of options. Note that the list of options is NOT an enumeration but a collection of name/value pairs obtained from the database.

So the question is how to display a combobox in the property grid that is bound dynamically?

I've seen the other forum posts and examples using the LookupPropertyDefinition but they all use static references in the XAML to the property names and use static resources as the ItemsSource. Neither of these are possible in my case as I won't know which 'properties' have options until runtime as the list is configurable in the database. In addition, the list of choices is pulled out of the database so it will be different for each 'property'.

In previous incarnations of our application, we've been able to simply define a custom TypeConverter for the property, override the GetStandardValuesSupported method to return true then override GetStandardValues which would return the list of choices. As I have learned from other posts, this is not supported in the RadPropertyGrid. So what is?

Your help is greatly appreciated as this is a significant enough feature and enough time has been spent trying to get it working that it could lead us to another vendor that is capable of supporting this need.

PropertyGrid

answered on 22 Oct 2012

4 answers

149 views

Printing fails every time

Every time we try to print a Document a white Space is added below every page. Even the sample from the Demo-App shows this Problem. We tested this on several machines with different Printers. We use the newest Assemblies (2012.2.1015.40). Attached is a Screenhot from a PDF-File that shows the default Sample from the Demo App printed via PDFCreator. We tried to change the SectionDefaultPageMargin, SectionDefaultPageSize, footer content, PrintSettings.PrintScaling, but nothing solves the issue.

RichTextBox

answered on 22 Oct 2012

12 answers

162 views

[Solved] Expanded > icon dissapearing/appearing

Hi, I have some ghosting problem with the TreeListView. Whenever I expand a row most (not all) rows become un-expandable, this can be fixed if I have many rows and can scroll down/up the treelistview. What can be triggering this behavior I'm running Q2 2012 Sp2.

Please can you help me with this.

Cheers
kristján

TreeListView

answered on 22 Oct 2012