Questions on UI for WPF Forum

1 answer

114 views

I try to run my project with a telerik control and i get the following error:

could not load file or assembly 'Telerik.Windows.Controls,' or one of it dependencies.
The module was expected to contain an assembly manifest. Error at object system.windows.controls.canvas.

Thanks.

GridView

answered on 12 Oct 2009

3 answers

219 views

GridViewComboBoxColumn binding problem

Hello,

I've searched the forum but without success! Apparently, I am the only one trying to bind a GridViewComboBoxColumn to a class (instead of simple a int or a string).

All the binding is working fine, the ComboBox is filled in correctly, changing and saving data is working but the GridView doesn't display the value on start (strangely, it is displaying correctly after I choose a value in the ComboBox...)!

I guess there is something missing to make the match between the original value and the values in the ComboBox... but what?

Here is a sample of my faulty code:

The main class of the GridView (note that here we have a Currency class and not a CurrencyID)

    
            public class Fund  
        
            {  
        
               public virtual string Name { get; set; }  
        
               public virtual Currency Currency { get; set; }  
        
            }

The Currency class

    
            public class Currency : AbstractLinkedClass  
        
            {          
        
               public virtual string IsoCode { get; set; }  
        
            }

The grid's XAML code

    
            <telerik:RadGridView Grid.Row="3" Margin="0,5,0,5" Name="rgvFund" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" AutoGenerateColumns="False" RowEditEnded="rgvFund_RowEditEnded" ValidationMode="Row">  
        
                <telerik:RadGridView.Columns> 
        
                    <telerik:GridViewDataColumn Header="Name" DataMemberPath="Name" /> 
        
                    <telerik:GridViewComboBoxColumn Header="Currency" ItemsSource="{Binding}" UniqueName="Currency.IsoCode" DataMemberBinding="{Binding Currency}" DisplayMemberPath="IsoCode" SelectedValueMemberPath="." /> 
        
                </telerik:RadGridView.Columns> 
        
            </telerik:RadGridView>

The .cs code behind where currencies are taken from the DB.

    
            rgvFund.Columns[1].DataContext = currencies;

Any idea why with this code, the Currency column appears empty on load (while Fund.Currency is correctly filled in on start)?

Thank you,

Daniel

GridView

answered on 12 Oct 2009

1 answer

111 views

Need SelectionMode="Multiple" UX as "cntrl + click" functionality

Hello Telerik,

I am using rad drag drop control, when the selection mode is multiple for the list box, the behaviour is something like below:

if i want to select three items,

-> click on first item, second item and third item

now when i am about to drag these items i will click on any one of the selected items and drag(a general windows user will expect this functionality to work fine). So when i click on item, the clicked item is getting deselected and as a result i am getting only two items in the payload of drag query.

the above functionality is a bit confusing for a normal windows user.

how can i get the drag functionality as "Control + Click" to select the items and "MouseLeftButtonDown + Drag" to drag the items (Similar as how we drag two or more folders in the file explorer of our windows(My Computer -> C:\))

Thanks,

Kranthi

DragAndDrop

answered on 10 Oct 2009

3 answers

197 views

RadTileview in Usercontrol designer exception

Hello,

When I put the RadTileView in a wpf UserControl I'm getting the following error message in the designer.

Object reference not set to an instance of an object.

at Telerik.Windows.Controls.DragDrop.RadDragAndDropManager.FindRootVisual() at Telerik.Windows.Controls.DragDrop.RadDragAndDropManager.Initialize() at Telerik.Windows.Controls.DragDrop.RadDragAndDropManager.OnAllowDragChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e) at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e) at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e) at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args) at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, OperationType operationType) at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, OperationType operationType, Boolean isInternal) at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value) at Telerik.Windows.Controls.DragDrop.RadDragAndDropManager.SetAllowDrag(DependencyObject obj, Boolean value) at Telerik.Windows.Controls.RadTileViewItem.OnApplyTemplate() at System.Windows.FrameworkElement.ApplyTemplate() at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at System.Windows.Controls.Canvas.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint) at System.Windows.Controls.ItemsPresenter.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at System.Windows.Controls.Control.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV) at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV) at System.Windows.Controls.Grid.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint) at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at System.Windows.Controls.Border.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at System.Windows.Controls.Control.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at MS.Internal.Designer.SimpleViewManager.DesignerBackground.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at System.Windows.Controls.Decorator.MeasureOverride(Size constraint) at Microsoft.Windows.Design.Interaction.DesignerView.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at MS.Internal.Designer.Viewport.MeasureOverride(Size availableSize) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint) at System.Windows.Controls.ScrollContentPresenter.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV) at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV) at System.Windows.Controls.Grid.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at System.Windows.Controls.ScrollViewer.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at System.Windows.Controls.Grid.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint) at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at System.Windows.Controls.Control.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at System.Windows.Interop.HwndSource.SetLayoutSize() at System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value) at System.Windows.Interop.HwndSource.set_RootVisual(Visual value) at MS.Internal.Designer.VSIsolatedDesigner.ViewHolder.Initialize() at MS.Internal.Designer.VSIsolatedDesigner.ViewHolder..ctor(UIElement content) at MS.Internal.Designer.VSIsolatedDesigner.VSIsolatedView.get_ViewHandle() at MS.Internal.Host.Isolation.IsolatedView.get_ViewHandle() at MS.Internal.Designer.DesignerPane.LoadDesignerView()

Thanks much
Boots

TileView

answered on 10 Oct 2009

7 answers

156 views

[Solved] Can't View Demo of Carousel

Every time I attempt to view the demo of the WPF Carousel object, I receive an Fatal Error with a massive message box, chock full of error text....any thoughts of how to fix this? I really to need to demo this control.

Carousel

answered on 09 Oct 2009

2 answers

89 views

Possible Bug in Telerik.Windows.Controls.FrameworkElementExtensions

Hello All,

This is an indirect bug that may not show up on the first time. Basically, I have traced a "Dispatcher.VerifyAccess" violation to the FrameworkElementExtensions class. This issue came about while my code was updating an ObservableCollection that the RadGridView.ItemsSource was bound to. Since I can't intercept the update to the RadGridView, the "Dispatcher.CheckAccess()" would have to happen in the Telerik code. So, either this check happens in the FrameworkElementExtensions class, or somewhere in the RadGridView class, say in the GridViewDataControl.OnCollectionViewCollectionChanged() method.

- Rashad Rivera
omegusprime.com

GridView

answered on 09 Oct 2009

3 answers

159 views

Is this possible?

Ok I have a cool idea but I don't know if I can pull it off...

I have a chart for a dashboard that displays metrics data in a stack for every day of the current week.

I load all of the days of the week except for the current day using a query into an archive data warehouse table.

I pull the current days data from current tables.

This works well but my goal is to display this data on a dash console in the office and update the chart every 15 seconds.

I only want to update the current day's bar though.... I don't want to refresh the whole control.

i.e.

if today is Tuesday I want to display Sat, Sun, Mon, Tue values but I want to refresh Tue every 15 seconds and only re-paint the bars for Tuesday.

Is this possible?

Thanks,

Tim

Chart

answered on 09 Oct 2009

6 answers

324 views

An item with the same key has already been added.

Can you shed any light on what would cause this issue? Typically, it will happen when I group or when I try to sort on a column.

I'm using the grid to display a set of search results, 10 columns in total. There will be duplicate values in some columns as some identifiers (customer / transaction IDs, etc) may appear multiple times. The grid is bound via MVVM to an ObservableCollection of objects via the DataContext. The columns are set up as attributes of those objects on first bind of the DataContext.

The data comes up fine on first load; then has issues when we sort or group.

GridView

answered on 09 Oct 2009

1 answer

111 views

Select Multiple Items Programatically?

I cannot see any way of selecting multiple items programmatically only single items. I am asking as I have a need to automatically refresh the grid but keep a users selections that they may be working on at the time.

GridView

answered on 09 Oct 2009

1 answer

150 views

UnBound Floating Panel

Any plans to allow floating panels to move outside the bounds of the main window?

-Terry

Docking

answered on 09 Oct 2009