Questions on UI for WPF Forum

5 answers

342 views

Binding using DataTemplate based on Type of SelectedItem

I am evaluating Telerik for use in a WPF 4.0 app I am creating. So far most of the replacement of MS controls has gone smoothly but I am struggling with the tabcontrol some. I am using MVVM. I have a view model which has a collection of other viewmodels. My tabcontrol is bound to the collection of viewmodels. I want my tabcontrol to show its content based on the viewmodel created/selected. I have DataTemplates set up that are tied to the class type of the viewmodels in the collection. This works great with the MS Tabcontrol but does not seem to work with the RadTabControl. Does the RadTabControl only support one type of content? My view collection starts out with two items in it, a DeviceInventoryListViewModel and an AccountMaintenanceListViewModel, the DeviceInventoryList view is shown correctly as the initial tab content but when I click on the Account tab it tries to coerce the contents of the AccountListViewModel into the Device view rather than creating new content with the AccountMaintenanceList view and I get an error about Accounts not being able to be set to Devices (or something similar).

I have the following set up in my Application.xaml:

<P><DataTemplate DataType="{x:Type vm:DeviceInventoryListViewModel}" >

<BR> <local:DeviceInventoryList/> <BR></DataTemplate>

<BR><DataTemplate DataType="{x:Type vm:AccountMaintenanceListViewModel}">

<BR> <local:AccountMaintenanceList /> <BR></DataTemplate></P>

My ShellViewModel is as follows:
Public Class ShellViewModel
Inherits ViewModelBase

Private _openviews As ObservableCollection(Of ViewModelBase)
Private _currentview As ViewModelBase

    Public ReadOnly Property Views As ObservableCollection(Of ViewModelBase)
        Get
            If _openviews Is Nothing Then
                _openviews = New ObservableCollection(Of ViewModelBase)
                 AddHandler _openviews.CollectionChanged, AddressOf ViewCollectionChanged
                 LoadDefaultViews()
            End If
            Return _openviews
        End Get
    End Property

    Private Sub LoadDefaultViews()
        _openviews.Add(New DeviceInventoryListViewModel)
        _openviews.Add(New AccountMaintenanceListViewModel)
        _currentview = _openviews.Item(0)
    End Sub

   Public Property SelectedView As ViewModelBase
         Get
             Return _currentview
         End Get
         Set(ByVal value As ViewModelBase)
            _currentview = value
            OnPropertyChanged("SelectedView")
        End Set
    End Property
End Class

And then my ShellView has its DataContext set to an instance of my ShellViewmodel and the XAML contains the following:

<telerik:RadTabControl Grid.Row="1" ItemsSource="{Binding Views}"

SelectedItem="{Binding SelectedView}" />

TabControl

answered on 07 Oct 2010

1 answer

132 views

Errors when trying to bind RadTreeView to CollectionViewSource with a ViewModel source

I´m working on an app with the following architecture, I´m using CSLA .NET 4, BXF for plumbing to MVVM and WPF.

Files code follow:

TreeviewView.xaml
------------------------

<UserControl x:Class="MyAppDesktopWPF.TreeviewView"

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

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

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

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

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

xmlns:csla="clr-namespace:Csla.Data;assembly=Csla"

mc:Ignorable="d"

d:DesignHeight="300" d:DesignWidth="400"

Loaded="UserControl_Loaded"

xmlns:my="clr-namespace:MyAppDesktopWPF.ViewModels">

<UserControl.Resources>

CollectionViewSource x:Key="TreeAreaDS" Source="{Binding

Source={StaticResource TrashViewModel},

Path=Model}"></CollectionViewSource>

HierarchicalDataTemplate x:Key="ToolsDataTemplate"ItemsSource="{Binding Tools}" >

<TextBlock Text="{Binding Path=Name}" FontWeight="Bold"/>

</

HierarchicalDataTemplate>

<HierarchicalDataTemplate x:Key="SegmentsDataTemplate"

ItemsSource="{Binding Segments}" ItemTemplate="{StaticResource ToolsDataTemplate}" >

<TextBlock Text="{Binding Path=Name}" FontWeight="Bold"/>

</HierarchicalDataTemplate>

<HierarchicalDataTemplate x:Key="SectionsDataTemplate"

ItemsSource="{Binding Sections}" ItemTemplate="{StaticResource

SegmentsDataTemplate}">

<TextBlock Text="{Binding Path=Name}"

FontWeight="Bold"/>

</HierarchicalDataTemplate>

</UserControl.Resources>

<Telerik:RadTreeView ItemsSource="{Binding Source={StaticResource

TreeAreaDS}}" ItemTemplate="{StaticResource SectionsDataTemplate}"

Name="PlanTreeView" Height="250" HorizontalAlignment="Left" Margin="3"

VerticalAlignment="Center" Width="150" />

TrashViewModel.cs
------------------------

public class TrashViewModel : ViewModel<MyAppBO.MyClass>

{

public TrashViewModel()

{

Bxf.Shell.Instance.ShowStatus(new Bxf.Status { Text =

"Getting Plan", IsBusy = true });

ManageObjectLifetime = true;

// cascade model changed events through VM to View

Model.PropertyChanged += (o, e) =>

OnPropertyChanged(e.PropertyName);

public TrashViewModel(MyClass classInstance)

{

Bxf.Shell.Instance.ShowStatus(new Bxf.Status { Text =

"Getting Plan", IsBusy = true });

ManageObjectLifetime = true;

Model = classInstance;

// cascade model changed events through VM to View<br>

Model.PropertyChanged += (o, e) =>

OnPropertyChanged(e.PropertyName);

}

With this version of the code I get an exception that says:
"'Provide value on 'System.Windows.Markup.StaticResourceHolder' threw an exception.' Line number '108' and line position '50'."
---------------------
However if I change the code for the collectionviewsource to:

<CollectionViewSource x:Key="TreeAreaDS"

Source="TrashViewModel">

</CollectionViewSource>

I get this:
Locating source for 'c:\Builds\WPF_Scrum\Release_WPF_2010_Q2_SP2\Sources\Development\Core\Controls\Animation\AnimationManager.cs'. Checksum: MD5 {d5 92 43 67 7f ad 5a 42 93 7e b9 53 ee b2 ef 99}
The file 'c:\Builds\WPF_Scrum\Release_WPF_2010_Q2_SP2\Sources\Development\Core\Controls\Animation\AnimationManager.cs' does not exist.
Looking in script documents for 'c:\Builds\WPF_Scrum\Release_WPF_2010_Q2_SP2\Sources\Development\Core\Controls\Animation\AnimationManager.cs'...
Looking in the projects for 'c:\Builds\WPF_Scrum\Release_WPF_2010_Q2_SP2\Sources\Development\Core\Controls\Animation\AnimationManager.cs'.
The file was not found in a project.
Looking in directory 'C:\Program Files\Microsoft Visual Studio 10.0\VC\crt\src\'...
Looking in directory 'C:\Program Files\Microsoft Visual Studio 10.0\VC\atlmfc\src\mfc\'...
Looking in directory 'C:\Program Files\Microsoft Visual Studio 10.0\VC\atlmfc\src\atl\'...
Looking in directory 'C:\Program Files\Microsoft Visual Studio 10.0\VC\atlmfc\include\'...
The debug source files settings for the active solution indicate that the debugger will not ask the user to find the file: c:\Builds\WPF_Scrum\Release_WPF_2010_Q2_SP2\Sources\Development\Core\Controls\Animation\AnimationManager.cs.
The debugger could not locate the source file 'c:\Builds\WPF_Scrum\Release_WPF_2010_Q2_SP2\Sources\Development\Core\Controls\Animation\AnimationManager.cs'.

???
Any ideas?
I could try setting up a demo project, but I´d expose too much of the BL of the app and my employer wouldn´t like that..

TreeView

answered on 07 Oct 2010

2 answers

111 views

ColumnFooter - Contentalignment

Hello friends,

could you tell me how I can set the alignment for the content of the FooterCells?
I tried to set it with style. That works, but the result is not very fine (screenshot hc_466.jpg).

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

<Setter Property="HorizontalAlignment" Value="Right"/>

</Style>

How is it possible to fill out the whole cells with white background? Setting the background-property via style does not work.

Second question: When I use grouping and ColumnFooters (ShowGroupFooters ="False" ShowColumnFooters="True") the aggregatresults are shown in the header too. That's not very pretty. Is it possibly to disable this? (screenshot hc_465.jpg).

Thank you for your help!

Best regards
Markus

GridView

answered on 07 Oct 2010

1 answer

138 views

Change column color in Radgridview

Hi

Am using Radgridview control. Am not able to change color for a particular cell after editing the column value.

Am using this code in cellValidating event.

                if (e.OldValue != e.NewValue)
                {
                    e.Cell.Background = Brushes.Green;
                }

The color is not changed :(

General Discussions

answered on 07 Oct 2010

1 answer

134 views

image in Tileview

Is possible to put a image in the Item Header?

Regards,
Rick Mueller

TileView

answered on 07 Oct 2010

1 answer

117 views

BarPanel expand/hide behaviour

Hi,

I was wondering whether RadBarPanel has the ability to collapse.
For example to have a button in the upper right corner which hides it when clicked, or expands it (just like panels in MS Outlook behave ).
if barPanel doesn`t include this functionality, do you have any suggestions how to implement it.

Thanks in advance,
Maria

PanelBar

answered on 07 Oct 2010

1 answer

111 views

Performance Issues

Hello,

I don't know if I'm doing something wrong, but everytime a load a Usercontrol , RadGridview anything thats sort of robust in a tile. I have Performance issues(very slow, automation is off, Please mind you I don't have the grid databind the Usercontrol is simple. THere are no datacontext to the tile etc.. Please help
Regard's
Rick

TileView

answered on 07 Oct 2010

1 answer

103 views

Sales Dashboard Requirements

I want to develop a sales dashboard (WPF) using VS 2008. I need to know which versions of radcontrols for WPF should i download to work with VS 2008. Also what other telerik controls do i need to install to develop a dashboard?

General Discussions

answered on 07 Oct 2010

1 answer

99 views

Sales Dashboard for VS2008

I downloaded the sales dashboard demo for WPF from this link
http://www.telerik.com/account/free-trials/trial-product-versions/single-trial.aspx?pmvid=0&pid=601

But the solution file does not open with VS2008. Where can i download the demo for VS 2008?

General Discussions

answered on 07 Oct 2010

1 answer

92 views

Custom X-Axis

i am using a RadChart and have 3 line series mapping. The item sourse to it is list collection of a single dimensional array. I am able to diplay the graph for 12 points on X-axis.The problem i have is that the X-Axis Label take values as 1,2,3 series. i want the name of months on these labels. Checked the forum and saw that TickPointsCollections can be used. But my radchart has no tick point collectin and has count of zero.
What should i do?

Chart

answered on 07 Oct 2010