Questions on UI for WPF Forum

2 answers

116 views

Hi,

When a cell is in edit mode and I click outside the radgridview then I get the following exception (2009.3.1219.35):

System.NullReferenceException was unhandled by user code
Message="Object reference not set to an instance of an object."
Source="Telerik.Windows.Controls.GridView"
StackTrace:
       at Telerik.Windows.Controls.GridView.GridViewCell.HandlePendingEdit() in c:\Builds\WPF_Scrum\GridView_WPF_2009_Q3_SP1\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 803
       at Telerik.Windows.Controls.GridView.GridViewCell.Editor_LostFocus(Object sender, RoutedEventArgs e) in c:\Builds\WPF_Scrum\GridView_WPF_2009_Q3_SP1\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 738
       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.UIElement.OnLostFocus(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, 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, 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.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.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)
       at System.Windows.Input.KeyboardDevice.Focus(IInputElement element)
       at System.Windows.UIElement.Focus()
       at System.Windows.Controls.ScrollViewer.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.CrackMouseButtonEventAndReRaiseEvent(DependencyObject sender, MouseButtonEventArgs e)
       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.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)
InnerException:

GridView

answered on 15 Jan 2010

1 answer

96 views

Combobox filtered by the selected value of another combobox in the same grid

Hello,
I can't find an example of how to implement a combobox that is filtered by the selected value of another combobox. I have a grid that needs to display Country - City. I have a country table (CountryID - Name) and a City table (CityID-Name - CountryID). I'm binding the first combobox to the country table and the other to the city table. How can I get the city comobobox to display only the cities based on the country that the user selected?

Thanks!
Silvina.

GridView

answered on 15 Jan 2010

2 answers

417 views

RadDropDownButton styling

Hello!
I need a DropDownButton that looks the very similar with the Themes button from RadControls fo WPF demos
If use the same style from a regular button I somehow lose the drop down functionality

    
            <!-- Style for Button --> 
        
                        <Style TargetType="Controls:RadDropDownButton" x:Key="DefaultButtonStyle"> 
        
                            <Setter Property="Background" Value="Transparent" /> 
        
                            <Setter Property="Foreground" Value="#FFFFFFFF" /> 
        
                            <Setter Property="Padding" Value="3" /> 
        
                            <Setter Property="BorderThickness" Value="1" /> 
        
                            <Setter Property="VerticalContentAlignment" Value="Center" /> 
        
                            <Setter Property="HorizontalContentAlignment" Value="Center" /> 
        
                            <Setter Property="BorderBrush" Value="Transparent" /> 
        
                            <Setter Property="Cursor" Value="Hand" /> 
        
                            <Setter Property="Template"> 
        
                                <Setter.Value> 
        
                                    <ControlTemplate TargetType="Controls:RadDropDownButton"> 
        
                                        <Grid Margin="0 0 0 5"> 
        
                                            <Border x:Name="Background" BorderBrush="#FFBF97F2" 
        
                                            BorderThickness="1,1,1,1" CornerRadius="4,4,4,4"> 
        
                                                <Border.Background> 
        
                                                    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
        
                                                        <GradientStop Color="#FF3B2555" /> 
        
                                                        <GradientStop Color="#FF2B1C3C" Offset="0.61699998378753662" /> 
        
                                                        <GradientStop Color="#FF321F47" Offset="1" /> 
        
                                                    </LinearGradientBrush> 
        
                                                </Border.Background> 
        
                                                <Path x:Name="Path" Height="Auto" Margin="0,0.082,0,8.859" Width="Auto" 
        
                                                Stretch="Fill" Stroke="{x:Null}" StrokeLineJoin="Round" 
        
                                                StrokeThickness="1" 
        
                                                Data="M0,3 C0,1.3431457 1.3431457,0 3,0 L129,0 C130.65686,0 132,1.3431457 132,3 L132,13.853975 C86.718803,0.055481441 26.160202,27.400364 0,11.585506 z"> 
        
                                                    <Path.Fill> 
        
                                                        <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
        
                                                            <GradientStop Color="#005B3D7A" Offset="0.092" /> 
        
                                                            <GradientStop Color="#FF5B3D7A" Offset="1" /> 
        
                                                        </LinearGradientBrush> 
        
                                                    </Path.Fill> 
        
                                                </Path> 
        
                                            </Border> 
        
                                            <ContentPresenter VerticalAlignment="Center" 
        
                                                        HorizontalAlignment="Center" 
        
                                                        Content="{TemplateBinding Content}" 
        
                                                        ContentTemplate="{TemplateBinding ContentTemplate}"/> 
        
                                        </Grid> 
        
                                        <ControlTemplate.Triggers> 
        
                                            <Trigger Property="IsMouseOver" Value="true"> 
        
                                                <Setter Property="BorderBrush" TargetName="Background" Value="#FFFFFFFF" /> 
        
                                                <Setter Property="Fill" TargetName="Path"> 
        
                                                    <Setter.Value> 
        
                                                        <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
        
                                                            <GradientStop Color="#005B3D7A" Offset="0.092" /> 
        
                                                            <GradientStop Color="#FF6D4497" Offset="1" /> 
        
                                                        </LinearGradientBrush> 
        
                                                    </Setter.Value> 
        
                                                </Setter> 
        
                                            </Trigger> 
        
                                            <Trigger Property="IsPressed" Value="True" /> 
        
                                            <Trigger Property="IsEnabled" Value="False" /> 
        
                                            <Trigger Property="IsFocused" Value="False" /> 
        
                                        </ControlTemplate.Triggers> 
        
                                    </ControlTemplate> 
        
                                </Setter.Value> 
        
                            </Setter> 
        
                        </Style>

I might use instead a RadComboBox but I don't know exactly how to style it in the same maner ( the idea is that I don't want to use instead just a RadComboBox with QsfTheme because I need to change some colors & stuff and I don't have the code from QsfTheme )
Can you help me?

Thank you!
Roxana

Buttons

answered on 15 Jan 2010

3 answers

88 views

"-" sign not working

Hello.

I've set the minimum value of my RadNumericUpDown to double.MinValue. I am able to hit the "-" sign on the numeric keypad, but not on the keyboard itself (between the 0 and = buttons above the P key). the RadNumericUpdown is filtering out this key. This is apperant when using a laptop, as they don't have a numeric keypad, so the user has to hit the fn key in order to get the "-" sign.

I had a similar issue with the "." key not working, I'm assuming this is more of the same. Here is a link to that thread

forum thread

I really need an answer asap, and appreciate your help.

Thanks

Joshua

NumericUpDown

answered on 15 Jan 2010

3 answers

131 views

ScrollIntoView issu

Here is the senario.

I have a ObservableCollection with let say 100 items. I have clicked on and selected row # 60. Then I delete row 50 to 100, and instantly add 50 new rows (I have now 100 items again. The grid "auto updates" as the type of collection, But I loose my selection.

I can get what row that was selected before my update, and select it agan. But now that row is at the top of the grid. I want the selection to be at the same place as before update.

How can I scroll the grid to that same position?

GridView

answered on 14 Jan 2010

8 answers

201 views

Row Drag Drop inside Viewbox

I’m using the rowdragdrop example inside of a viewbox. Theviewbox is set to stretch=”Fill”. The problem I’m having is that when the userresizes the window and moves a row the offset inside the viewbox isn’t changingwhich means the position of the row that I’m dragging isn’t under the mouse.

I was wondering if you had any ideas on how this could befixed?

Thanks

~Boots

GridView

answered on 14 Jan 2010

4 answers

116 views

Drap/Drop Item's Parent

Hello,

I want to perform my own custom logic whenever an item is dragged/dropped. This procedure requires me to access the item's parent. I noticed that when I drag items and then drop them, in the RadTreeView.DragEnded event, the item's ParentItem property becomes null and the FullPath string property is also cleared.

Is this the correct event to handle for my custom logic (i.e. performing the "drop" in the business logic)? If so, how can I get the item's parent before it was dragged (i.e. its current parent).

Thank you.

TreeView

answered on 14 Jan 2010

1 answer

101 views

Q3 GridView MouseLeftButtonDown event not fire

Hi There
We are shift to Q3 Controls but my MouseLeftButtonDown on GridView doesn't fire. As i have seen the post where this event handle by mouse class of Telerik.Windows.Input namespace but we are not able to find this namespace, there may be version issue. We use assemblies with version [2009.3.1103.35]. Please reply me as soon as possible. and if possible submit a demo.

General Discussions

answered on 14 Jan 2010

1 answer

241 views

Hiding calendar toggle button

Is it possible to hide the calendar toggle button of the RadDatePicker control?

Regards,
Michael

DatePicker

answered on 14 Jan 2010

1 answer

301 views

Context menu on header cell problem

Hello,

I'm using the GridView/HeaderContextMenu example for version 2009.3.1208.35. When i have more columns than displayed on the screen it seems to mix up the contextmenus. Also this line of code IEnumerable<GridViewHeaderCell> cells = row.Cells.OfType<GridViewHeaderCell>(); in the InitializeMenus method doesn't return all of the GridViewHeaderCells.

made a quick example,

    
            <Window x:Class="WpfApplication1.Window1" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                xmlns:telerk="http://schemas.telerik.com/2008/xaml/presentation" 
        
                xmlns:local="clr-namespace:WpfApplication1"> 
        
                <Grid> 
        
                    <telerk:RadGridView x:Name="rgv" local:GridViewHeaderMenu.IsEnabled="True" /> 
        
                </Grid> 
        
            </Window>

    
            using System; 
        
            using System.Collections.Generic; 
        
            using System.Linq; 
        
            using System.Text; 
        
            using System.Windows; 
        
            using System.Windows.Controls; 
        
            using System.Windows.Data; 
        
            using System.Windows.Documents; 
        
            using System.Windows.Input; 
        
            using System.Windows.Media; 
        
            using System.Windows.Media.Imaging; 
        
            using System.Windows.Navigation; 
        
            using System.Windows.Shapes; 
        
            using System.Collections; 
        
            namespace WpfApplication1 
        
            { 
        
                /// <summary> 
        
                /// Interaction logic for Window1.xaml 
        
                /// </summary> 
        
                public partial class Window1 : Window 
        
                { 
        
                    public Window1() 
        
                    { 
        
                        InitializeComponent(); 
        
                        ArrayList List = new ArrayList(); 
        
                        for (int i = 0; i < 100; i++) 
        
                        { 
        
                            List.Add(new Testing() 
        
                            { 
        
                                Test1 = i.ToString(), 
        
                                Test2 = i, 
        
                                Test3 = i, 
        
                                Test4 = i.ToString(), 
        
                                Test5 = i, 
        
                                Test6 = i, 
        
                                Test7 = i.ToString(), 
        
                                Test8 = i, 
        
                                Test9 = i, 
        
                                Test10 = i.ToString(), 
        
                                Test11 = i, 
        
                                Test12 = i, 
        
                                Test13 = i.ToString(), 
        
                                Test14 = i, 
        
                                Test15 = i, 
        
                                Test16 = i.ToString(), 
        
                                Test17 = i, 
        
                                Test18 = i 
        
                            }); 
        
                        } 
        
                        rgv.ItemsSource = List; 
        
                    } 
        
                } 
        
                public class Testing 
        
                { 
        
                    public String Test1 { get; set; } 
        
                    public int Test2 { get; set; } 
        
                    public Double Test3 { get; set; } 
        
                    public String Test4 { get; set; } 
        
                    public int Test5 { get; set; } 
        
                    public Double Test6 { get; set; } 
        
                    public String Test7 { get; set; } 
        
                    public int Test8 { get; set; } 
        
                    public Double Test9 { get; set; } 
        
                    public String Test10 { get; set; } 
        
                    public int Test11 { get; set; } 
        
                    public Double Test12 { get; set; } 
        
                    public String Test13 { get; set; } 
        
                    public int Test14 { get; set; } 
        
                    public Double Test15 { get; set; } 
        
                    public String Test16 { get; set; } 
        
                    public int Test17 { get; set; } 
        
                    public Double Test18 { get; set; } 
        
                } 
        
            }

    
            using System; 
        
            using System.Collections.Generic; 
        
            using System.Linq; 
        
            using System.ComponentModel; 
        
            using System.Text; 
        
            using System.Windows; 
        
            using System.Windows.Data; 
        
            using Telerik.Windows; 
        
            using Telerik.Windows.Controls; 
        
            using Telerik.Windows.Controls.GridView; 
        
            using Telerik.Windows.Data; 
        
            namespace WpfApplication1 
        
            { 
        
                public class GridViewHeaderMenu 
        
                { 
        
                    private RadGridView grid = null; 
        
                    public GridViewHeaderMenu(RadGridView grid) 
        
                    { 
        
                        this.grid = grid; 
        
                    } 
        
                    public static readonly DependencyProperty IsEnabledProperty 
        
                        = DependencyProperty.RegisterAttached("IsEnabled", typeof(bool), typeof(GridViewHeaderMenu), 
        
                            new PropertyMetadata(new PropertyChangedCallback(OnIsEnabledPropertyChanged))); 
        
                    public static void SetIsEnabled(DependencyObject dependencyObject, bool enabled) 
        
                    { 
        
                        dependencyObject.SetValue(IsEnabledProperty, enabled); 
        
                    } 
        
                    public static bool GetIsEnabled(DependencyObject dependencyObject) 
        
                    { 
        
                        return (bool)dependencyObject.GetValue(IsEnabledProperty); 
        
                    } 
        
                    private static void OnIsEnabledPropertyChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e) 
        
                    { 
        
                        RadGridView grid = dependencyObject as RadGridView; 
        
                        if (grid != null) 
        
                        { 
        
                            if ((bool)e.NewValue) 
        
                            { 
        
                                // Create new GridViewHeaderMenu and attach RowLoaded event. 
        
                                GridViewHeaderMenu menu = new GridViewHeaderMenu(grid); 
        
                                menu.Attach(); 
        
                            } 
        
                        } 
        
                    } 
        
                    private void Attach() 
        
                    { 
        
                        if (grid != null) 
        
                        { 
        
                            this.grid.Loaded += new RoutedEventHandler(grid_Loaded); 
        
                        } 
        
                    } 
        
                    void grid_Loaded(object sender, RoutedEventArgs e) 
        
                    { 
        
                        GridViewHeaderRow headerRow = grid.ChildrenOfType<GridViewHeaderRow>().FirstOrDefault(); 
        
                        if (headerRow != null) 
        
                        { 
        
                            InitializeMenus(headerRow); 
        
                        } 
        
                    } 
        
                    private void InitializeMenus(GridViewHeaderRow row) 
        
                    { 
        
                        IEnumerable<GridViewHeaderCell> cells = row.Cells.OfType<GridViewHeaderCell>(); 
        
                        foreach (GridViewHeaderCell cell in cells) 
        
                        { 
        
                            // create menu 
        
                            RadContextMenu contextMenu = new RadContextMenu(); 
        
                            // set menu Theme 
        
                            StyleManager.SetTheme(contextMenu, StyleManager.GetTheme(grid)); 
        
                            RadMenuItem item = new RadMenuItem() { Header = String.Format(@"Sort Ascending by ""{0}""", cell.Column.Header) }; 
        
                            contextMenu.Items.Add(item); 
        
                            item = new RadMenuItem() { Header = String.Format(@"Sort Descending by ""{0}""", cell.Column.Header) }; 
        
                            contextMenu.Items.Add(item); 
        
                            item = new RadMenuItem() { Header = String.Format(@"Clear Sorting by ""{0}""", cell.Column.Header) }; 
        
                            contextMenu.Items.Add(item); 
        
                            item = new RadMenuItem() { Header = String.Format(@"Group by ""{0}""", cell.Column.Header) }; 
        
                            contextMenu.Items.Add(item); 
        
                            item = new RadMenuItem() { Header = String.Format(@"Ungroup ""{0}""", cell.Column.Header) }; 
        
                            contextMenu.Items.Add(item); 
        
                            item = new RadMenuItem() { Header = "Choose Columns:" }; 
        
                            contextMenu.Items.Add(item); 
        
                            // create menu items 
        
                            foreach (GridViewColumn column in grid.Columns) 
        
                            { 
        
                                RadMenuItem subMenu = new RadMenuItem() 
        
                                { 
        
                                    Header = column.Header, 
        
                                    IsCheckable = true, 
        
                                    IsChecked = true 
        
                                }; 
        
                                // bind IsChecked menu item property to IsVisible column property 
        
                                subMenu.SetBinding(RadMenuItem.IsCheckedProperty, 
        
                                    new Binding("IsVisible") { Mode = BindingMode.TwoWay, Source = column }); 
        
                                item.Items.Add(subMenu); 
        
                            } 
        
                            contextMenu.AddHandler(RadMenuItem.ClickEvent, new RoutedEventHandler(OnMenuItemClick)); 
        
                            // attach menu 
        
                            RadContextMenu.SetContextMenu(cell, contextMenu); 
        
                        } 
        
                    } 
        
                    void OnMenuItemClick(object sender, RoutedEventArgs e) 
        
                    { 
        
                        RadContextMenu menu = (RadContextMenu)sender; 
        
                        RadMenuItem clickedItem = ((RadRoutedEventArgs)e).OriginalSource as RadMenuItem; 
        
                        GridViewColumn column = ((GridViewHeaderCell)menu.UIElement).Column; 
        
                        if (clickedItem.Parent is RadMenuItem) 
        
                            return; 
        
                        string header = Convert.ToString(clickedItem.Header); 
        
                        using (grid.DeferRefresh()) 
        
                        { 
        
                            Telerik.Windows.Data.SortDescriptor sd = (from d in grid.SortDescriptors 
        
                                                                      where d.Member == column.UniqueName 
        
                                                                      select d).FirstOrDefault(); 
        
                            if (header.Contains("Sort Ascending")) 
        
                            { 
        
                                if (sd != null) 
        
                                { 
        
                                    grid.SortDescriptors.Remove(sd); 
        
                                } 
        
                                grid.SortDescriptors.Add(new Telerik.Windows.Data.SortDescriptor() 
        
                                { 
        
                                    Member = column.UniqueName, 
        
                                    SortDirection = ListSortDirection.Ascending 
        
                                }); 
        
                            } 
        
                            else if (header.Contains("Sort Descending")) 
        
                            { 
        
                                if (sd != null) 
        
                                { 
        
                                    grid.SortDescriptors.Remove(sd); 
        
                                } 
        
                                grid.SortDescriptors.Add(new Telerik.Windows.Data.SortDescriptor() 
        
                                { 
        
                                    Member = column.UniqueName, 
        
                                    SortDirection = ListSortDirection.Descending 
        
                                }); 
        
                            } 
        
                            else if (header.Contains("Clear Sorting")) 
        
                            { 
        
                                if (sd != null) 
        
                                { 
        
                                    grid.SortDescriptors.Remove(sd); 
        
                                } 
        
                            } 
        
                            else if (header.Contains("Group by")) 
        
                            { 
        
                                Telerik.Windows.Data.GroupDescriptor gd = (from d in grid.GroupDescriptors 
        
                                                                           where d.Member == column.UniqueName 
        
                                                                           select d).FirstOrDefault(); 
        
                                if (gd == null) 
        
                                { 
        
                                    grid.GroupDescriptors.Add(new Telerik.Windows.Data.GroupDescriptor() { Member = column.UniqueName, SortDirection = ListSortDirection.Ascending }); 
        
                                } 
        
                            } 
        
                            else if (header.Contains("Ungroup")) 
        
                            { 
        
                                Telerik.Windows.Data.GroupDescriptor gd = (from d in grid.GroupDescriptors 
        
                                                                           where d.Member == column.UniqueName 
        
                                                                           select d).FirstOrDefault(); 
        
                                if (gd != null) 
        
                                { 
        
                                    grid.GroupDescriptors.Remove(gd); 
        
                                } 
        
                            } 
        
                        } 
        
                    } 
        
                } 
        
            }

on my machine if you scroll to the right an open the contextmenu for column Test17 it opens up the contextmenu for Test3.

Any help would be great.
Thanks Again,
~Boots

GridView

answered on 14 Jan 2010