Questions on UI for WPF Forum

1 answer

116 views

Good afternoon!

I've found two issues with RadTabControl scrolling. All the needed information can be found at ticket #353795.

Also I have a question, how can I customize the style of DropDown's item?? For example, I want to see not the header of TabItem. but its content in DropDown.

Thanks in advance.

TabControl

answered on 06 Oct 2010

3 answers

165 views

Node indentation

How do you vary the amount by which child nodes are indented ?

TreeView

answered on 06 Oct 2010

7 answers

206 views

GridViewCombo box column selection changed event

Hi,
I want some operation on Grid view combo column selection changed. How can I do that . Is there any event ? I read that is is derived from RadCombobox column. Thanks
Zubair

GridView

answered on 06 Oct 2010

3 answers

112 views

Apply different color for each dayname

Hi,

I am using RADCalander of wpf,i want to apply style(color) to type of the day.
Ex:
Sun--Red color
Mon-Blue color
Tue--Green color

Could you please help me to sort out this.Its urgent

Calendar

answered on 06 Oct 2010

1 answer

114 views

Validation in enterprise Library

Hi all,
i have applied validation in a text box as follows. note i m using enterprise library for validation purpose:

<TextBox Grid.Row="3" Grid.Column="1" TabIndex="2" Margin="5" MinHeight="40" TextWrapping="Wrap" AcceptsReturn="True" VerticalScrollBarVisibility="Visible" >

<Binding.ValidationRules>

<y:ValidatorRule SourcePropertyName="Comments" SourceType="{x:Type e:tblVehicle}"/>

</Binding.ValidationRules>

</Binding>

</TextBox>

now i want to apply it at RadDatePicker:

<telerik:RadDatePicker TabIndex="8" ToolTip="Enter due date ..." Name="dtpDueDate" Height="25"

Background="Transparent" BorderBrush="{DynamicResource brushWatermarkBorder}" >

<telerik:RadDatePicker.SelectedDate>

</telerik:RadDatePicker.SelectedDate>

</telerik:RadDatePicker>
it give me nothing under .selectedDate property.

how can i apply the validation rule in a pattern as applied at textbox in the datepicker?

Thanks.

DatePicker

answered on 06 Oct 2010

1 answer

81 views

Telerik.Windows.Controls to My.Windows.Controls

Hi ,
I developed Custom Calender using RadCalendar control.
Few properties and Events reffer Telerik.Windows.Controls.
For example:

public event System.EventHandler<Telerik.Windows.Controls.Calendar.CalendarModeChangedEventArgs> DisplayModeChanged

{

add { RadCalendar.DisplayModeChanged += value; }

remove { RadCalendar.DisplayModeChanged -= value; }

}

In above code block iam using "Telerik.Windows.Controls.Calendar.CalendarModeChangedEventArgs"
Now i want to use "MY.Windows.Controls.Calendar.CalendarModeChangedEventArgs"
The developer should not use Any telerix Reference , when he is using my Custom control.He just need to use
My.Windows.controls.
What should i do to change Telerix to MY while using those events ?
Can you guys help me.

Thanks,
Pradeep.

Calendar

answered on 06 Oct 2010

8 answers

291 views

Trouble setting Theme at runtime

I am trying to change the theme of some of the RadControls at runtime. In the documentation, I found 2 ways to set the theme, neither of which work. I can set the theme at design time no problem.

StyleManager

.SetTheme(radSchedulerMain, new Office_BlackTheme());

radSchedulerMain.SetValue(

StyleManager.ThemeProperty,new SummerTheme());

With both methods, I get "There is no source code available for the current location", then "Index was outside the bounds of the array". How do I get past this problem?? Exception details below.

System.IndexOutOfRangeException was unhandled
Message="Index was outside the bounds of the array."
Source="PresentationFramework"
StackTrace:
       at System.Windows.Controls.ItemContainerGenerator.RealizedItemBlock.ContainerAt(Int32 index)
       at System.Windows.Controls.ItemContainerGenerator.ContainerFromIndex(Int32 index)
       at Telerik.Windows.Controls.RadRibbonBar.TabControlElementItemContainerGenerator_StatusChanged(Object sender, EventArgs e) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\RibbonBar\RibbonBar\RadRibbonBar.cs:line 1197
       at System.EventHandler.Invoke(Object sender, EventArgs e)
       at System.Windows.Controls.ItemContainerGenerator.SetStatus(GeneratorStatus value)
       at System.Windows.Controls.ItemContainerGenerator.Generator.System.IDisposable.Dispose()
       at System.Windows.Controls.Panel.reGenerateChildren()
       at System.Windows.Controls.Panel.get_InternalChildren()
       at Telerik.Windows.Controls.RibbonBar.Primitives.TabStripPanel.MeasureOverride(Size availableSize) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\RibbonBar\RibbonBar\Primitives\TabStripPanel.cs:line 59
       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 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.Border.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.DockPanel.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.Control.MeasureOverride(Size constraint)
       at Telerik.Windows.Controls.RadTabControl.MeasureOverride(Size availableSize) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\Navigation\TabControl\RadTabControl.cs:line 2045
       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.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.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 System.Windows.ContextLayoutManager.UpdateLayout()
       at Telerik.Windows.Controls.RadComboBox.NavigateToItem(Object item) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\ComboBox\RadComboBox.cs:line 780
       at Telerik.Windows.Controls.RadComboBox.OnSelectionChanged(SelectionChangedEventArgs e) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\ComboBox\RadComboBox.cs:line 1365
       at System.Windows.Controls.Primitives.Selector.SelectionChanger.End()
       at System.Windows.Controls.Primitives.Selector.SelectionChanger.SelectJustThisItem(Object item, Boolean assumeInItemsCollection)
       at System.Windows.Controls.Primitives.Selector.OnSelectedItemChanged(DependencyObject d, 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 System.Windows.Controls.Primitives.Selector.set_SelectedItem(Object value)
       at Telerik.Windows.Controls.RadComboBox.NotifyComboBoxItemMouseUp(RadComboBoxItem comboBoxItem) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\ComboBox\RadComboBox.cs:line 870
       at Telerik.Windows.Controls.RadComboBoxItem.OnMouseLeftButtonUp(MouseButtonEventArgs e) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\ComboBox\RadComboBoxItem.cs:line 254
       at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
       at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
       at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
       at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
       at System.Windows.Input.InputManager.ProcessStagingArea()
       at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
       at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
       at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
       at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
       at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
       at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
       at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter)
       at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
       at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
       at System.Windows.Threading.Dispatcher.TranslateAndDispatchMessage(MSG& msg)
       at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
       at System.Windows.Application.RunInternal(Window window)
       at Scheduler_WPF.App.Main() in C:\Personal Files\My Dropbox\Scheduler_WPF\Scheduler_WPF\obj\Debug\App.g.cs:line 0
       at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
InnerException:

General Discussions

answered on 06 Oct 2010

1 answer

597 views

RadPane scrollbars

Are RadPanes supposed to provide scrollbars if the content is larger than the RadPane? I thought I saw that behavior when I was originally evaluaing the Docking control, but it's not doing it for me now in my project, nor in any of the Telerik demos on this site (Silverlight or WPF). Do I need to implement my own scrolling in anything that will be put into a RadPane?

Docking

answered on 06 Oct 2010

5 answers

102 views

GridViewComboBox horizontal scrolling performance

Running the latest 9/24 SP2 build. I'm going to include alot of information because I'm honestly not sure what matters and what doesn't.. so forgive some of what may be superfluous information.

I have a datagrid that has its columns generated based on user configuration at run time. {using grid.Columns.Add(x);}

This data grid is 38 columns wide. Currently 16 of those columns are configured as combo box columns.

10 of them have very short itemsource lists. (5 - 10 items)
6 of them have considerably longer itemsource lists (900- 2000).

Horizontal scrolling performance is very poor in this case. CPU spikes to 50% on a Core2 Duo 2.8Ghz with 3GB RAM.

the most common probles I've been informed of is the RadGridView is housed in a container that disables column/row virtualization. Below is my grid configuration, and my RadGridView declaration

<Grid.RowDefinitions>

<RowDefinition Height="30" />

<RowDefinition Height="55" />

<RowDefinition Height="*" />

</Grid.RowDefinitions>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="*"/>

</Grid.ColumnDefinitions>

<telerik:RadGridView

Grid.Row="2"

ScrollViewer.HorizontalScrollBarVisibility="Auto"

ScrollViewer.VerticalScrollBarVisibility="Auto"

AutoGenerateColumns="false"

Name="userGridView"

SelectionUnit="Cell"

ClipboardCopyMode="Default"

SelectionMode="Extended"

CanUserSortColumns="True"

Pasting="userGridView_Pasting"

Pasted="userGridView_Pasted"

KeyDown="userGridView_KeyDown"

ItemsSource="{Binding}"

telerik:Theming.Theme="Summer" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch" ></telerik:RadGridView>

What can I do to increase the performance here? From what I read in the 9/24 release notes, the gridview was supposed to improve performance in these cases.

GridView

answered on 05 Oct 2010

3 answers

280 views

How to Get the Underlying TreeView Item on Mouseover

Please look the attach files.Thanks.

TreeView

answered on 05 Oct 2010