Questions on UI for WPF Forum

3 answers

62 views

I have a WPF application which calls a dialog using the ShowDialog method and then sets the e.NewObject of the GridView event to the newly created row. Everything works very well, however I am attempting to change the ShowDialog calls to remove the synchronous actions. This is to get the code working in an XBap environment and to get it closer to Silverlight if a port is needed.

I am however baffled as to how to do this without blocking the UI thread to wait for the dialog information.

This is basically what I am doing now:

RadWindow NewWindow = new RadWindow();

NewWindow.ShowDialog();

e.NewObject = NewWindow.NewRow;

This is what I would like to do

RadWindow NewWindow = new RadWindow();

NewWindow.Closed += delegate

{

e.NewObject = NewWindow.NewRow;

};

NewWindow.Show();

GridView

answered on 28 Apr 2011

3 answers

177 views

Items disappear when collapsed

Hi. I'm using the WPF RadTreeListView with EnableRowVirtualization = false and EnableColumnVirtualization = false. I hook the TreeListViewRow's IsExpandedChanged event and, in the handler, I go through all the RadTreeListView's Items. Ultimately, I want to get the item containers (the TreeListViewRows) for each item.

But when an row is collapsed (as opposed to expanded) all its child items disappear from RadTreeListView's Items collection! When I expand the row, the child items come back.

Even if virtualization were on, that should only affect the existance of TreeListViewRows, not the existence of Items. How do I fix this?

Thanks,
Bob Alexander

TreeListView

answered on 28 Apr 2011

1 answer

56 views

Relating the GUI for an Appointment to the underlying Appoingment's Start and End proeprties

I have implemented a class that inherits from the ScheduleView.Appointment class. The only thing that I added to this class is a constructor and 2 properties (Start & End).

When I drag an appointment within the ScheduleView, the Start and End properties (that overload the base class's Start and End properties) are not modified....the break points are never hit.

Since the class that inherits from ScheduleView.Appointment is also going to be wrapping my Model's "Appointment" class...I would really appreciate someone telling me how to get the GUI to update the Start and End properties when you drag the Appointment's start/end points to a new time value.

This is my very very simple appointment class...the start and end properties are never set when I drag an appointment in the ScheduleView:

Public Class TimeZoneAppointment

Inherits Telerik.Windows.Controls.ScheduleView.Appointment

Private _myModelAppointment As ModelAppointment

Public Overloads Property Start As Date

Get

Return MyBase.Start

End Get

Set(ByVal value As Date)

'this will also modify the model appointment's start property

MyBase.Start = value

End Set

End Property

Public Overloads Property [End] As Date

Get

Return MyBase.End

End Get

Set(ByVal value As Date)

'this will also modify the model appointment's end property

MyBase.End = value

End Set

End Property

Public Sub New(ByVal ma As ModelAppointment)

MyBase.New()

_myModelAppointment = ma

MyBase.Start = _myModelAppointment.startDate

MyBase.End = _myModelAppointment.endDate

Dim recurrencePattern As New RecurrencePattern()

recurrencePattern.Frequency = RecurrenceFrequency.Weekly

Dim recurrenceRule As New RecurrenceRule(recurrencePattern)

MyBase.RecurrenceRule = recurrenceRule

End Sub

End Class

Thanks for your time and help!

ScheduleView

answered on 28 Apr 2011

1 answer

426 views

RadDocking with GridSplitter

Let me explain the scenario:

In a WPF-Window i have a grid with one row and three columns. The columns are used as follow:
Column 0 => RadDocking
Column 1 => GridSplitter
Column 2 => A ContentControl

When moving the gridsplitter, the raddocking will be resized well. But:

The RadDocking contains for example two panes. If i minimize the panes, they are shown on the left site - as expected. But the GridSplitter did not "follow to the left".

Okay - the RadDocking is "working" in the area defined by grid column 0 and may be it did not know anything about other controls in the grid that must be resized if all panes in a raddocking are minimzed. Is there a solution?

I have a small example app that shows the problem at runtime - below the xaml of the window.

Regards
Jan Waiz

<Window x:Class="WPFprismMEFRadDockingTest.Views.ShellView"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"

xmlns:i="http://schemas.microsoft.com/expression/2010/interactions"

xmlns:ei="http://schemas.microsoft.com/expression/2010/interactivity"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:prism="http://www.codeplex.com/prism"

xmlns:controls="clr-namespace:WPFprismMEFRadDockingTest.Controls"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

xmlns:telerikControls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls"

Title="Prism Shell" WindowStartupLocation="CenterScreen" Height="620" Width="850"

Icon="../Images/PnPIcon.ico"

mc:Ignorable="d" d:DesignHeight="720" d:DesignWidth="900">

<Window.Background>

<ImageBrush ImageSource="/Images/background.jpg" Stretch="UniformToFill"/>

</Window.Background>

<Window.Resources>

</Window.Resources>

<Grid x:Name="LayoutRoot">

<Grid.RowDefinitions>

<RowDefinition Height="100"/>

<RowDefinition Height="*"/>

</Grid.RowDefinitions>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="1*" MinWidth="25"/>

<ColumnDefinition Width="Auto"/>

<ColumnDefinition Width="3*"/>

</Grid.ColumnDefinitions>

<telerik:RadDocking x:Name="LeftRadDocking"

telerikControls:StyleManager.Theme="Transparent"

HasDocumentHost="False"

Grid.Row="1" Grid.Column="0"

Margin="10,5,5,10"

Padding="0">

<telerik:RadDocking.Background>

<SolidColorBrush />

</telerik:RadDocking.Background>

<telerik:RadDocking.BorderBrush>

<SolidColorBrush />

</telerik:RadDocking.BorderBrush>

<telerik:RadSplitContainer Name="LeftRadSplitContainer"

Background="#99FFFFFF" Opacity="0.5"

InitialPosition="DockedLeft">

<telerik:RadPaneGroup Opacity="1">

<telerik:RadPaneGroup.Background>

<SolidColorBrush />

</telerik:RadPaneGroup.Background>

<telerik:RadPane Header="Pane Left 1">

<telerik:RadPane.Content>

<TextBlock TextWrapping="Wrap"

Text="This is Pane Left 1 to fill the area with some senseless text." />

</telerik:RadPane.Content>

</telerik:RadPane>

<telerik:RadPane Header="Pane Left 2" Content="Pane Left 2" >

</telerik:RadPane>

</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

</telerik:RadDocking>

<GridSplitter Grid.Row="1" Grid.Column="1"

HorizontalAlignment="Center"

VerticalAlignment="Stretch"

Width="5"

ShowsPreview="True"

ResizeDirection="Columns"

Background="Transparent"/>

<ContentControl x:Name="DesktopRegion"

Grid.Row="1" Grid.Column="2"

Margin="5,5,15,10">

<ContentControl.Template>

<ControlTemplate TargetType="ContentControl">

<Grid>

<controls:RoundedBox />

<ContentPresenter Margin="10,0,10,0" Content="{TemplateBinding Content}" />

</Grid>

</ControlTemplate>

</ContentControl.Template>

</ContentControl>

</Grid>

</Window>

Docking

answered on 28 Apr 2011

1 answer

131 views

No Data Series error when using custom layout for RadChart

I'm trying to have the Legend lay on top of the chart area. To my understanding the following code should work. I am setting my data in codebehind. If I change the value of UseDefaultLayout to True the chart control displays the correct chart by using the default ChartArea and default ChartLegend etc. However, when I set UseDefaultLayout to False, like in the code below, the ChartArea displays the error No Series Data. The ChartLegend is located at the desired location so I need to know why my data is not being displayed. Please help me understand why this is not working and how to fix it.

<DataTemplate x:Key="ChartDataTemplate">

<telerik:RadChart x:Name="Chart" UseDefaultLayout="False">

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="1*" />

<RowDefinition Height="19*" />

</Grid.RowDefinitions>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="19*" />

<ColumnDefinition Width="1*" />

</Grid.ColumnDefinitions>

<telerik:ChartLegend x:Name="LegendArea"

Grid.Row="1"

Grid.Column="0"

HorizontalAlignment="Right"

VerticalAlignment="Top" />

<telerik:ChartArea LegendName="LegendArea" />

</Grid>

</telerik:RadChart>

</DataTemplate>

Thank you,
Danny

Chart

answered on 28 Apr 2011

3 answers

79 views

Horizontal scrolling issue with Q1 2011

Hi,

We've had issues with horizontal scrolling in our RadGridViews with the Q1 2011 version of the WPF package for .NET 3.5 (both the first one and SP 1).

In our grids that reside inside RadExpanders (if that matters) we have several columns which in lower resolutions requires scrolling horizontally. We bind them as GridViewDataColumns. In some we have DataTemplates, but in most we just do a normal bind using the DataMemberBinding.

Until you start scrolling everything looks fine like it did in Q3 2010 and earlier versions, but when scrolling horizontally by dragging the scrollbar with the mouse especially the smaller columns tend to grow and be very wide instead of keeping the preferred width according to the content of the columns.

So now for the second time we have to revert to Q3 2010 until this gets fixed.

Has something changed which require us to add something to the XAML to make them keep the preferred width or is this a bug that will be fixed in future versions?

GridView

answered on 28 Apr 2011

1 answer

66 views

Zooming Bug

Hi,
I am using scattered point graph with zooming functionality. I found the following bug, when i zoom in and add new series mapping
The Binary Operator GreaterOrEqualTo is not defined for the types System.Objects. and System.Double. The Graph starts showing No Data Series in the graph. Any Help?

Chart

answered on 28 Apr 2011

1 answer

82 views

The mouse pointer - intersecting lines

Hello!

On the chart the main series of candles. How to make the mouse cursor on the spot were two crossed lines and these lines move with the mouse pointer.

Library Version 2011.1.419.

Chart

answered on 28 Apr 2011

2 answers

186 views

rowstyle isexpandable

Hi,

I have set up a rowstyle for my radtreelistview,
however, the rows without any children are still displayed without the expand arrow infront of them

the reason for this is because I have implemented the loadondemand or lazy loading function using MVVM in the control
in order to make all the rows expandable, i have put a dummy child in each row's view model object
however, this throws me object not initialised error when I tried to filter the rows

the code below describe how i set up the rowstyle

<telerik:RadTreeListView.RowStyle>

<Style TargetType="{x:Type telerik:TreeListViewRow}">

<Setter Property="IsExpandable" Value="True" />

<Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}" />

<Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}" />

<Setter Property="FontWeight" Value="Normal" />

<Style.Triggers>

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

<Setter Property="FontWeight" Value="Bold" />

</Trigger>

</Style.Triggers>

</Style>

</telerik:RadTreeListView.RowStyle>

please can you advise what was wrong? note I don't want to set IsExpandable as shown in the treelistview loadondemand demon as I'm using MVVM and want to keep the code behind clean

btw, I'm using radcontrol q1 2011

Cheers

TreeListView

answered on 28 Apr 2011

2 answers

160 views

Error Installing WPF VSExtensions 2011.1.422.0

Trying to install the latest WPF VSExtensions (2011.1.422.0) shows the following error in the log:

4/27/2011 12:07:21 PM - Beginning to install extension to Microsoft Visual Studio 2010 Ultimate...
4/27/2011 12:07:22 PM - Install Error : System.IO.PathTooLongException: C:\Documents and Settings\<USER: 18 characters long>\Local Settings\Application Data\Microsoft\VisualStudio\10.0\Extensions\Telerik\Telerik WPF VSExtensions\2011.1.422.0\ProjectTemplates\Telerik\Windows\TlrkWPFCSBrowserTk.zip: CS/Browser/RadControlsWpfBrApp.csproj
at Microsoft.VisualStudio.ExtensionManager.ExtensionManagerService.BeginInstall(IInstallableExtension installableExtension, Boolean perMachine, AsyncOperation asyncOp)
at Microsoft.VisualStudio.ExtensionManager.ExtensionManagerService.InstallWorker(IInstallableExtension extension, Boolean perMachine, AsyncOperation asyncOp)
4/27/2011 12:07:22 PM - Reverting uninstall of version 2011.1.419.0 of the extension.

Since we can't change the install directory there is no way to install it, however the 419 and previous versions did work.

Travis

Installer and Visual Studio Extensions

answered on 27 Apr 2011