Questions on UI for WPF Forum

3 answers

143 views

RowValidating is not working with NewRow

I use `RowValidating` event for `RadGridView`. It works fine with regular rows, but new row is not getting red when I set `e.IsValid = false;` However, error message displays properly.
What should I do to get it working?

GridView

answered on 19 Feb 2013

5 answers

188 views

[Solved] ArgumentNullException when editing items in a “grouped” gridview

An ArgumentNullException is thrown when editing items in a “grouped” grid.
It’s easily reproducible with a small WPF application containing the following files:

MainWindow.xaml

<Window x:Class="gridgroupingbug.MainWindow"

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

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

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

Title="MainWindow" Height="350" Width="525">

<StackPanel>

<telerik:RadGridView

x:Name="_iniEntriesGrid"

ItemsSource="{Binding Path=IniEntryModels}"

SelectedItem="{Binding Path=SelectedIniEntry, Mode=TwoWay}"

AutoGenerateColumns="False"

AutoExpandGroups="True"

CanUserInsertRows="True">

<telerik:RadGridView.GroupDescriptors>

<telerik:GroupDescriptor Member="Scope" SortDirection="Ascending" />

<telerik:GroupDescriptor Member="SectionName" SortDirection="Ascending" />

</telerik:RadGridView.GroupDescriptors>

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Path=Scope}" Header="Scope" Width="3*"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Path=SectionName}" Header="Section" Width="3*"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Path=Key}" Header="Key" Width="4*"/>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

<Button Click="AddClicked">AddLine</Button>

</StackPanel>

</Window>

MainWindow.xaml.cs

using System.Collections.ObjectModel;

using System.Globalization;

using System.Windows;

namespace gridgroupingbug

{

public partial class MainWindow

{

public MainWindow()

{

InitializeComponent();

IniEntryModels = new ObservableCollection<IniEntryModel>();

_iniEntriesGrid.DataContext = this;

for (var i = 0; i < 2; i++)

{

IniEntryModels.Add(new IniEntryModel

{

Key = i.ToString(CultureInfo.InvariantCulture),

Scope = "MyScope1",

SectionName = "SomeSection",

});

}

public ObservableCollection<IniEntryModel> IniEntryModels { get; private set; }

private void AddClicked(object sender, RoutedEventArgs e)

{

IniEntryModels.Add(new IniEntryModel());

}

public class IniEntryModel

{

public string Scope { get; set; }

public string SectionName { get; set; }

public string Key { get; set; }

}

Telerik version: 2012.3.1129.40

Steps to reproduce:

Make sure you have at least two levels of grouping set in the grid (in our example, the first two columns)
Add a new item to the list bound to the grid’s ItemsSource (in our example, IniEntryModel)
Edit the newly added line (any column)
Move the focus to somewhere out of the grid (click in the button, for example), and an Exception is thrown.

Exception/Stack Trace:
System.ArgumentNullException was unhandled

HResult=-2147467261

Message=Value cannot be null.

Parameter name: element

Source=Telerik.Windows.Controls

ParamName=element

StackTrace:

at Telerik.Windows.Controls.ParentOfTypeExtensions.<GetParents>d__0.MoveNext() in c:\TB\102\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\Extensions\ParentOfTypeExtensions.cs:line 74

at System.Linq.Enumerable.<OfTypeIterator>d__aa`1.MoveNext()

at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)

at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)

at Telerik.Windows.Controls.GridView.GridViewCell.HandlePendingEdit(UIElement focusedElement) in c:\TB\102\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 1021

at Telerik.Windows.Controls.GridView.GridViewCell.HandlePendingEditOnLostFocus() in c:\TB\102\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 899

at Telerik.Windows.Controls.GridView.GridViewCell.Editor_LostFocus(Object sender, RoutedEventArgs e) in c:\TB\102\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 930

at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)

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 e)

at System.Windows.Controls.Primitives.TextBoxBase.OnLostFocus(RoutedEventArgs e)

at System.Windows.UIElement.IsFocused_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)

at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)

at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)

at System.Windows.Controls.TextBox.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, Boolean coerceWithCurrentValue, OperationType operationType)

at System.Windows.DependencyObject.ClearValueCommon(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata)

at System.Windows.DependencyObject.ClearValue(DependencyPropertyKey key)

at System.Windows.Input.FocusManager.OnFocusedElementChanged(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, Boolean coerceWithCurrentValue, OperationType operationType)

at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)

at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)

at System.Windows.Input.FocusManager.SetFocusedElement(DependencyObject element, IInputElement value)

at System.Windows.Input.KeyboardNavigation.UpdateFocusedElement(DependencyObject focusTarget)

at System.Windows.FrameworkElement.OnGotKeyboardFocus(Object sender, KeyboardFocusChangedEventArgs e)

at System.Windows.Input.KeyboardFocusChangedEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)

at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)

at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)

at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)

at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)

at System.Windows.UIElement.RaiseTrustedEvent(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.KeyboardDevice.ChangeFocus(DependencyObject focus, Int32 timestamp)

at System.Windows.Input.KeyboardDevice.TryChangeFocus(DependencyObject newFocus, IKeyboardInputProvider keyboardInputProvider, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)

at System.Windows.Input.KeyboardDevice.Focus(DependencyObject focus, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)

at System.Windows.Input.KeyboardDevice.Focus(IInputElement element)

at System.Windows.UIElement.Focus()

at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonDown(MouseButtonEventArgs e)

at System.Windows.UIElement.OnMouseLeftButtonDownThunk(Object sender, MouseButtonEventArgs e)

at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)

at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)

at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)

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.OnMouseDownThunk(Object sender, MouseButtonEventArgs e)

at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)

at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)

at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)

at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)

at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)

at System.Windows.UIElement.RaiseTrustedEvent(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, WindowMessage 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, Int32 numArgs)

at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)

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.PushFrameImpl(DispatcherFrame frame)

at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)

at System.Windows.Threading.Dispatcher.Run()

at System.Windows.Application.RunDispatcher(Object ignore)

at System.Windows.Application.RunInternal(Window window)

at System.Windows.Application.Run(Window window)

at System.Windows.Application.Run()

at gridgroupingbug.App.Main() in c:\lixo\gridgroupingbug\obj\Debug\App.g.cs:line 0

at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)

at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()

InnerException:

Thanks!

PQ.

GridView

answered on 19 Feb 2013

2 answers

258 views

[Solved] RtfFormatProvder.Import does not embed images from Outlook Generated RTF text

Hello,

I have a program that uses the RtfFormatProvider.Import method. This method is not able to extract the images embedded by Outlook rtf emails.

Steps to Replicate the problem.
1) Create a new Email in outlook.
2) Select Rich Text Format
3) Embed Image
...
(My program attempts the following...)
4) Retrieve RTF Text from email body.
5) Run RTFText through RtfFormatProvider.Import(string) method.
6) Display the generated RadDocument in a RadRichTextBox.

Result: Images are not visible. Most likely due to the fact that outlook rtf doesn't list them as pictures, but as ole objects.

Is there any workaround or can this be placed on your todo list?

-Tayllor

RichTextBox

answered on 18 Feb 2013

0 answers

56 views

Button set like jquery radios

Hi everyone,

I would like to know if there is some way to create radio buttons styled like normal Windows buttons. Like the jquery: http://jqueryui.com/button/#radio

Thank you for your replies.

General Discussions

asked on 18 Feb 2013

15 answers

523 views

Project Configuration Wizard empty

Hi

i just installed WPF Q3 2010, and tryed to create a new project.
The dropdown just below WPF settings is empty (guess i have to select installed version)
if i click on download button, it says no newer version found.
loading a simple online sample compiles and works as expected.
(WIN 7/64 Bit, VS 2010)

what i'm missing?

General Discussions

answered on 18 Feb 2013

5 answers

135 views

Creating a line with their empty column

Hello, I have a little doubt has as above each column to create an empty row inside the grid proprio
to be used as a filter.

Ex. Imagine a data grid with 10 columns and the first row that is empty and editable, so that
fassa information entered into the filter of the selected column.

graciously
André

GridView

answered on 18 Feb 2013

1 answer

105 views

PositionHandlerWalker

Hello Telerik

In my appication I have a series of vertically stacked RichTextBoxes. What I would like to do is to detect if the Caret is on the first or last line in the document, so that I can move the the focus and set the Caret in the previous or next RTB, if the user ties to "walk out of a RTB". Hope this makes sense.

When debugging I noticed that in the RichTextBox.Document.CaretPosition there was a positionHandlerWalker.CanMoveUp and CanMoveDown property which kind of sounded what if am after, but it doesn't seem that the positionHandlerWalker property is available.

Hope you can help

/Terje

RichTextBox

answered on 18 Feb 2013

4 answers

170 views

tileview target

hello guys,

I want to have 6 items and one target with different order

please check the attached picture.

meaning i want the area with the black border to be the target.
when i maximize the red item it will be in the black border area and the orange and yellow items minimized.

however, i want to keep the blue,brown and purple items to be to the right of the screen all the time.

when i maximize the blue item, the full content should be in the black border and the blue,brow and purple items will remain the same

any ideas...

TileView

answered on 18 Feb 2013

1 answer

122 views

ListBox with list items as window type

Hi,

I just wanted to show each list item in list box as window portlet like flexible to maximize and minimize the listbox items.

Pleass suggest me how do i implement?

ListBox

answered on 18 Feb 2013

3 answers

387 views

How to change the AutoComplete sorting behavior

Hi,

Let's say I have a combo box with these string items which must be in the following order:

"AZ"
"AA"

If I type 'A' when the combo box has focus, the text "AZ" will be selected. I would prefer to have the auto-completion suggest matching values in alphabetical order, but there doesn't seem to be any way to do this. Is there a way to do this out-of-the-box, and if not, is there a custom way I could accomplish this with a little more work? I've tried handling the TextInput event but there seems to be a known bug in which that event is broken in current versions of the library. Also, whatever solution I come up with needs to be able to work with both WPF and Silverlight versions of the control.

Thanks,
Mike Vargas

ComboBox

answered on 18 Feb 2013