I would like to know how to display the following view model 

public class AssetClassLevelViewModel
{    
     public string AssetClassName {get; set;}

     public ObservableCollection<AssetClassLevelViewModel> ChildAssetClasses {get; set;}

     public ObservableCollection<ProductHoldingsWithAllocationViewModel> ProductHoldings {get; set;}

}

The ProductHoldingsWithAllocationViewModel has properties such as ProductName etc., which are to be displayed in columns. Attached is a sample of what it should look like.

The AssetClass in the picture is in the AssetClassLevelViewModel, and each of the Products is represented by the ProductHoldingsWithAllocationViewModel.

I would like to know if this is possible, if we are to use the RadTreeListView.

Thank You

Hello,

I am using RadControls version 2012.2.607.40 for WPF 4.

I am having an issue with the scrolling of a RadGridView. The problem is that under certain circumstances, the RadGridView scrolls to the top for no apparent reason. The following xaml and code-behind show a simple sample:



If I scroll the RadGridView to the bottom and then move the mouse over the text "Place Mouse Here", the RadGridView scrolls to the top. If I then click the mouse over "Place Mouse Here", causing the RadGridView to scroll to the bottom, and then move the mouse outside the text "Place Mouse Here", the RadGridView again scrolls to the top. Note that placing the mouse over the text "Place Mouse Here" causes a TextBlock to become visible at the bottom of the screen.

I can stop this auto scrolling of the RadGridView by changing either or both the grid row height of * or grid column width of * to a fixed value. However, this is not an acceptable solution because I want those grid row and column to take all remaining space in the window.

I believe, but can't prove, that this behavior has something to do with a SizedChange event being fired when the TextBlock at the bottom of the window changes its visibility. But obviously in my case, no sizes are actually changing.

Can anybody tell me what is causing the unsolicited scrolling of my RadGridView and, better yet, how to avoid this behavior?

Thank you,

-- john

In my ShellV, I have a CustomRegion:

   <telerik:RadDocking HasDocumentHost="True"
                            Grid.Row="3"
                            x:Name="MainRadDocking"
                            BorderThickness="0"
                            Margin="0"                            
                            Background="Transparent">
            <telerik:RadDocking.DocumentHost>
                <telerik:RadSplitContainer>
                    <telerik:RadPaneGroup  prism:RegionManager.RegionName="MainPaneRegion"
                                           Name="MainDockingPanelGroup"/>
                </telerik:RadSplitContainer>
            </telerik:RadDocking.DocumentHost>
            <telerik:RadSplitContainer InitialPosition="DockedLeft">
                <telerik:RadPaneGroup prism:RegionManager.RegionName="LeftPaneRegion"
                                      Name="LeftDockingPanelGroup"/>
            </telerik:RadSplitContainer>
            <telerik:RadSplitContainer InitialPosition="DockedRight">
                <telerik:RadPaneGroup  prism:RegionManager.RegionName="RightPaneRegion"
                                       Name="RightDockingPanelGroup"/>
            </telerik:RadSplitContainer>
        </telerik:RadDocking>

When I launch my application, I am getting 81 errors, here is a sample:

System.Windows.Data Information: 41 : BindingExpression path error: 'PaneHeaderVisibility' property not found for 'object' because data item is null.  This could happen because the data provider has not produced any data yet. BindingExpression:Path=SelectedPane.PaneHeaderVisibility; DataItem='AutoHideArea' (Name='LeftAutoHide'); target element is 'PaneHeader' (Name=''); target property is 'Visibility' (type 'Visibility')

System.Windows.Data Information: 20 : BindingExpression cannot retrieve value due to missing information. BindingExpression:Path=SelectedPane.PaneHeaderVisibility; DataItem='AutoHideArea' (Name='LeftAutoHide'); target element is 'PaneHeader' (Name=''); target property is 'Visibility' (type 'Visibility')

System.Windows.Data Information: 21 : BindingExpression cannot retrieve value from null data item. This could happen when binding is detached or when binding to a Nullable type that has no value. BindingExpression:Path=SelectedPane.PaneHeaderVisibility; DataItem='AutoHideArea' (Name='LeftAutoHide'); target element is 'PaneHeader' (Name=''); target property is 'Visibility' (type 'Visibility')

System.Windows.Data Information: 10 : Cannot retrieve value using the binding and no valid fallback value exists; using default instead. BindingExpression:Path=SelectedPane.PaneHeaderVisibility; DataItem='AutoHideArea' (Name='LeftAutoHide'); target element is 'PaneHeader' (Name=''); target property is 'Visibility' (type 'Visibility')

System.Windows.Data Information: 41 : BindingExpression path error: 'IsActive' property not found for 'object' because data item is null.  This could happen because the data provider has not produced any data yet. BindingExpression:Path=SelectedPane.IsActive; DataItem='AutoHideArea' (Name='LeftAutoHide'); target element is 'PaneHeader' (Name='HeaderElement'); target property is 'IsHighlighted' (type 'Boolean')

What is causing this problem? Do I need to set the bindings to a fallbackvalue? Do I need to create RadPanes within the RadPaneGroups? If so, can you send me an example?

Hello,

Is there any possible way to get the list of options to a word through code-behind?

Something like the famous "you mean?" Google?

thanks

Hello

Please refer to the telerik "Save/Load the Content of the Panes" docking topic. I'm trying to load the layout of my docking control in this way when navigating away and then returning to this screen to maintain view state. This page refers to the following piece of code:

I assume that "GetPaneContent" refers to some internal method in the code-behind which returns the content, whatever that control may have been before the content was saved. Since I am using MVVM and adding RadPanes and RadPaneGroups dynamically in my view model, I maintain a dictionary of the pane contents by the serialization tag that I assign to each one. This view model code is as follows:


To explain, chartConfiguration.Id is a Guid which serves as a string tag and hostedCharts is a field of type Dictionary<Guid, ChartView>.
I use this dictionary to get the ChartView when I reload the layout. ChartView is the content I want to reset as the content of the pane.

My element loading event handler looks like this:


Here's my concern:
Firstly, if I remove the code to try to remove the ChartView from its parent, I get an InvalidOperationException saying to first disconnect the element before adding it to a new one on the line, "newPane.Content = chartView;" . It seems that the entire visual tree is still intact and reloading the screen creates new visual elements and adds these to the Docking component. Is this not memory intensive? Please note that this screen's (my screen, "ChartHostView")'s lifestyle is Transient and may be affecting the way it should work.

Secondly, my pane groups are not being loaded in the state that I saved them in. Why is it necessary for me re-set their Vertical Alignment ?

Please let me know if I am going about this the completely wrong way.
Thank you.

Hi

Can someone help me with the following please

How do I set the foreground color in GridViewCheckBoxColumn in XAML ?

I can't seem to find the appropriate property to set

thanks

Murray

I have a GridView that displays huge amounts of data. Moreover, columns are generated dynamically depending on the data and columns use custom DataTemplates. That said, GridView really takes some time to draw itself and virtualization feature is crucial for decent performace. However this feature is set to OFF once GridView height is not fixed. Obviously I want my GridView to occupy all available space and change its size when app window is resized. I.e. I want the effect equal to GridView.Height = Auto.

How can I achieve this - that GridView adjusts its size to available free space and still uses virtualization? 

Hi there

I want to arrange large number of some controls containing labels and buttons to be viewed on a window with the ability of resizing.

Is there any feature to implement what Google did in his image search?
In normal state, the control only shows some picture or labels,
but in mouse-over state it must be zoomed-up and all the contained controls like buttons, gauges, and more...

Thanks

Hi,

I'm trying to programmatically assign a header template for a column. The header template is similar to the GridViewSelectColumn as it just would have a checkbox in it, but I need the column to be able to bind to a property. I did look at the blog post from Vlad, but it will not work for this particular situation.

Below is the code I have to create a custom template (which works with for an ordinary ListView), but I don't know how to programmatically assign it to the column. I tried setting it to the column.Header property since it's of type object, but that did not work.

FrameworkElementFactory factory = new FrameworkElementFactory(typeof(CheckBox));

factory.AddHandler(CheckBox.CheckedEvent, new RoutedEventHandler(GridViewAll_HeaderCheckBox_Checked));

factory.AddHandler(CheckBox.UncheckedEvent, new RoutedEventHandler(GridViewAll_HeaderCheckBox_Checked));

factory.SetValue(CheckBox.ToolTipProperty, "(De)Select All");

 

DataTemplate template = new DataTemplate();

template.DataType = typeof(bool);

template.VisualTree = factory;



GridViewCheckBoxColumn column = new GridViewCheckBoxColumn();

column.DataMemberBinding = new Binding(prefix + property.Name);

column.Header = template // <-- this does not work


Thank you,
Tim

I have a GridView that is bound to a QueryableCollectionView. The QueryableCollectionView is constructed from an ObservableCollection, which is populated in code.  (So there's no messing about with LINQ to SQL ORMS, etc.)

I have a command implemented in the ViewModel (bound to a button and to a function key, but that's not important), that needs to check to see if any of the records contained in the grid have certain values in a certain field.

I'd thought I'd be able to do a simple LINQ query on the QueryableCollectionView, but it doesn't seem to work. Even the simplest won't compile.

This:


Results in: Instance argument: cannot convert from 'Telerik.Windows.Data.QueryableCollectionView' to 'System.Linq.IQueryable'

This:


Results in: Cannot convert lambda expression to type 'Telerik.Windows.Data.SelectDescriptorCollection' because it is not a delegate type.

The only workaround I've been able to find is to iterate through all the records with a foreach(), which results in considerably less clear code.