Questions on UI for WPF Forum

13 answers

510 views

Hi,
In RadPivotFieldList in Choose fields to add to report how i can remove the checkboxes and maybe setthe background on active fields?

I add a few fields in Row Labels and few in Values from cs code. it automatic show "Z Values" in Row Labes field. It need to be in Column Labels. Of course i can move it when load the screen but it is suppose to be there from the beginning not user to do this.

Visual Example

How I can remove Defer Layout Update and do it automatic when user drop a field for report?

Regards,
Saykor

PivotGrid

answered on 30 May 2015

0 answers

117 views

LayoutTransform with PivotFieldList

We apply ScaleTransform to the LayoutTransforms of all our WPF controls, and I'm finding that the PivotFieldList context menus and any associated windows that display from these menus are not inheriting the LayoutTransform from the PivotFieldList. Would there be any way to modify the LayoutTransform for these menus and windows?

PivotGrid

asked on 29 May 2015

1 answer

209 views

Hundreds of InvalidCastExceptions to type 'Telerik.Windows.Data.IGroup'

Hi there,

I have a Grid which is bound to an ObservableCollection<Record>. This grid is using a custom GroupHeaderTemplate. When I open the screen containing the grid whilst running with a VS2013 debugger attached, I see lots of exceptions being reported in the output window. It also takes a long time (1-2 mins) to display the grid that used to display in a few seconds. This exception is obviously happening on a background thread or being caught somewhere as it doesn't ever get displayed to the user or cause the application to crash. I can turn on exception breaks in VS2013 when the exception is thrown and I can see details about it, but nothing that would point to a fix. It appears to be happening as part of a layout pass. The exception is...

System.InvalidCastException

Unable to cast object of type 'MyNamespace.Record' to type 'Telerik.Windows.Data.IGroup'.

CallStack:

    Telerik.Windows.Data.dll!Telerik.Windows.Data.FuncExtensions.ToUntypedFunc<Telerik.Windows.Data.IGroup,object>.AnonymousMethod__0(object item)   Unknown
    Telerik.Windows.Data.dll!Telerik.Windows.Data.KeyedCollection.GetKeyByItem(object value)   Unknown
    Telerik.Windows.Data.dll!Telerik.Windows.Data.KeyedCollection.AddRange(System.Collections.IEnumerable items)   Unknown
    Telerik.Windows.Data.dll!Telerik.Windows.Data.QueryableCollectionView.PopulateInternalList(System.Linq.IQueryable view)   Unknown
    Telerik.Windows.Data.dll!Telerik.Windows.Data.QueryableCollectionView.CreateInternalList()   Unknown
    Telerik.Windows.Data.dll!Telerik.Windows.Data.QueryableCollectionView.EnsureInternalList()   Unknown
    Telerik.Windows.Data.dll!Telerik.Windows.Data.QueryableCollectionView.InternalList.get()   Unknown
    Telerik.Windows.Data.dll!Telerik.Windows.Data.QueryableCollectionView.EnsureRootGroup()   Unknown
    Telerik.Windows.Data.dll!Telerik.Windows.Data.QueryableCollectionView.RootQCVGGroup.get()   Unknown
    Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.Rows.CalculateRowCount()   Unknown
    Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.CalculateAllRowsCount()   Unknown
    Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.EnsureIndexStorage()   Unknown
    Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.MeasureOverride(System.Windows.Size availableSize)   Unknown
    Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.MeasureOverride(System.Windows.Size availableSize)   Unknown
    PresentationFramework.dll!System.Windows.FrameworkElement.MeasureCore(System.Windows.Size availableSize)   Unknown
    PresentationCore.dll!System.Windows.UIElement.Measure(System.Windows.Size availableSize)   Unknown
    PresentationCore.dll!System.Windows.ContextLayoutManager.UpdateLayout()   Unknown
    PresentationCore.dll!System.Windows.ContextLayoutManager.UpdateLayoutCallback(object arg)   Unknown
    PresentationCore.dll!System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()   Unknown
    PresentationCore.dll!System.Windows.Media.MediaContext.RenderMessageHandlerCore(object resizedCompositionTarget)   Unknown
    PresentationCore.dll!System.Windows.Media.MediaContext.RenderMessageHandler(object resizedCompositionTarget)   Unknown
    WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs)   Unknown
    WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source, System.Delegate method, object args, int numArgs, System.Delegate catchHandler)   Unknown
    WindowsBase.dll!System.Windows.Threading.DispatcherOperation.InvokeImpl()   Unknown
    mscorlib.dll!System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx)   Unknown
    mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx)   Unknown
    mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state)   Unknown
    WindowsBase.dll!System.Windows.Threading.DispatcherOperation.Invoke()   Unknown
    WindowsBase.dll!System.Windows.Threading.Dispatcher.ProcessQueue()   Unknown
    WindowsBase.dll!System.Windows.Threading.Dispatcher.WndProcHook(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled)   Unknown
    WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled)   Unknown
    WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o)   Unknown
    WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs)   Unknown
    WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source, System.Delegate method, object args, int numArgs, System.Delegate catchHandler)   Unknown
    WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs)   Unknown
    WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)   Unknown
    [Native to Managed Transition]
    [Managed to Native Transition]
    WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame frame)   Unknown
    PresentationFramework.dll!System.Windows.Application.RunInternal(System.Windows.Window window)   Unknown
    PresentationFramework.dll!System.Windows.Application.Run()   Unknown
    MyApplication.dll!MyApplication.MyApplicationView.Start() Line 57   C#
    MyApplication.dll!MyApplication.Modularity.MyBootstrapper.Run() Line 249   C#
    MyHost.exe!MyHost.MyStartup.Main() Line 63   C#

I'm running .Net 4.5 and Telerik 2015.1 noxaml binaries.

Any idea what could be causing this and if there's a simple fix?

Thanks

Russell

GridView

answered on 29 May 2015

2 answers

119 views

Display grid lines when disabled

Hi,

I use Expression Dark theme with RadGridView and when the gridview is disabled, cells' border are hidden. I'm trying to display them anyway. I've been able to display vertical lines, but I can't find what to change to prevent hidding horizontal lines.

Thank you,

Etienne

GridView

answered on 29 May 2015

1 answer

248 views

ComboBox IsReadOnly + MouseEnter and MouseLeave

Hi,

I need a ComboBox where

The user can't select items with the mouse
The user can't select items with the keyboard
The MouseEnter and MouseLeave events still fire

I thought setting IsReadOnly to true would make the control readonly, but that doesnt seem to do anything?

So far the only thing that gets close is the code below, but that seems to still allow keyboard selection to slip through about 1 in 3 tries despite the flag.

Is there a "real" way to do this? I mean one that is not so hacked and that works all the time?

The way the control looks is not much of an issue (e.g. IsEnabled = false is fine), but I do need the MouseEnter and MouseLeave events and the user should not be able to change the value in any way.

Regards,

Bayram

if (isReadOnly)

{

c.MainComboBox.MaxDropDownHeight = 0;

c.MainComboBox.CanKeyboardNavigationSelectItems = false;

}

else

{

c.MainComboBox.MaxDropDownHeight = 300;

c.MainComboBox.CanKeyboardNavigationSelectItems = true;

}

c.MainComboBox.IsReadOnly = isReadOnly;

ComboBox

answered on 29 May 2015

3 answers

176 views

cannot shift tab out of RadDatePicker

We use the RadDatePicker in numerous places. Sometimes direct and sometimes through a DataTemplate, but the problem is consistent. We can TAB through the controls (including other telrik controls) but we cannot SHIFT+TAB (reverse tab) through the date controls. It stops and highlights the date on the control and goes no further.

we are using 2014.2.729.45 for all controls.

below are some code samples:

01.<WrapPanel Grid.Row="3"

02. Grid.Column="1"

03. >

04. <telerik:RadDatePicker SelectableDateEnd="{Binding LineItemEndDate}"

05. SelectableDateStart="{Binding LineItemStartDate}"

06. SelectedValue="{Binding GivenStartDate}"

07. Style="{StaticResource TilePropertyDataRadDatePickerStyle}"

08. />

09. <ContentControl IsEnabled="{Binding IsStartDateInvalid}"

10. Style="{StaticResource ErrorAdorner}"

11. ToolTip="{Binding StartDateErrorMsg}"

12. />

13. </WrapPanel>

And here is the Style

01.<Style x:Key="TilePropertyDataRadDatePickerStyle"

02. TargetType="{x:Type telerik:RadDatePicker}"

03. >

04. <Setter Property="FontFamily" Value="{telerik:Windows8Resource ResourceKey=FontFamily}" />

05. <Setter Property="FontSize" Value="{telerik:Windows8Resource ResourceKey=FontSize}" />

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

07. <Setter Property="IsTabStop" Value="True" />

08. <Setter Property="Height" Value="{StaticResource TilePropertyHeight}" />

09. <Setter Property="Foreground" Value="{StaticResource TilePropertyDataBrush}" />

10. <Setter Property="Margin" Value="{StaticResource TilePropertyDataMargin}" />

11. <Setter Property="VerticalAlignment" Value="Center" />

12. <Setter Property="Width" Value="100" />

13. <Setter Property="HorizontalAlignment" Value="Left" />

14.</Style>

I saw this used to be an issue, but was corrected back in 2012. not sure if bug was re0introduced or we have some piece of code "off".

thanks.

DatePicker

answered on 29 May 2015

1 answer

143 views

Column header in Pivots

I am able to display row headers in pivots but is there a way to display column headers through Pivots

PivotGrid

answered on 29 May 2015

1 answer

65 views

Font change not preserved on new paragraph

Hello,

I am using version 2014.3.1202.40 in my application. I have discovered that if I change the font in the middle of a paragraph, add some text and then hit <Enter> to create a new paragraph, the new paragraph reverts to the font from the beginning of previous paragraph. However, if I change the font at the beginning of a paragraph, add some text and create a new paragraph the new font is used for the new paragraph.

I have verified this behavior exists in a sample app provided by Telerik in another, unrelated forum post.

If I perform the same actions in MS Word, it preserves the font change going into the next paragraph. This is the behavior I would expect; that if I change the font, it will keep using that font until I change it again, regardless of whether I create a new paragraph.

Is this intended behavior? Is there a property change I can make or another workaround to avoid this behavior?

Thanks,

Peter

RichTextBox

answered on 28 May 2015

1 answer

160 views

Programmatically setting column values

Hello,

I am currently working on a behavior that enables bulk editing functionality for the gridview. I have a working prototype that hooks into the CellEditEnded event. It seems to be a little bit hacky though, involving getting the binding path (args.Cell.DataColumn.DataMemberBinding.Path.Path), separating that out into one (or more) PropertyInfo element, then walking that dependency chain back and calling the final propertyInfo.SetValue(rowItem, newData) for each edited item.

I looked at other alternatives to this and found that the GridViewCell has a Value property. Instead of going the reflection route, I tried to iterate down the rows / cells and set the value using the GridViewCell.Value property. This does not propigate back to the bound object though or update the visual state.

Is there a way to programmatically set cell values without going the reflection route and having to reconstruct the binding?

GridView