AmbiguousMatchException When Rendering A Grid

[Albert]

I am setting GridViewDataControl.ItemsSource to an instance of a QueryableCollectionView. When the grid is rendered on the screen I get an AmbiguousMatchException. Any ideas what might cause this?

I have included the stack trace below:

System.Reflection.AmbiguousMatchException was unhandled by user code

  HResult=-2147475171

  Message=Ambiguous match found.

  Source=mscorlib

  StackTrace:

       at System.RuntimeType.GetPropertyImpl(String name, BindingFlags bindingAttr, Binder binder, Type returnType, Type[] types, ParameterModifier[] modifiers)

       at System.Type.GetProperty(String name)

       at Telerik.Windows.Controls.GridViewBoundColumnBase.GetValidationErrors(Object dataItem, String propertyName) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Columns\GridViewBoundColumnBase.cs:line 1694

       at Telerik.Windows.Controls.GridView.GridViewCell.<GetDataErrors>d__7.MoveNext() in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 704

       at Telerik.Windows.Data.EnumerableExtensions.Count(IEnumerable source) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Core\Data\Collections\EnumerableExtensions.cs:line 126

       at Telerik.Windows.Controls.GridView.GridViewCell.UpdateIsValidState() in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 624

       at Telerik.Windows.Controls.GridView.GridViewCell.UpdateValue() in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 1708

       at Telerik.Windows.Controls.GridView.GridViewCell.SetCellElement() in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 537

       at Telerik.Windows.Controls.GridView.GridViewRow.PrepareCell(GridViewCellBase cellBase, GridViewColumn column) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Rows\GridViewRow.cs:line 915

       at Telerik.Windows.Controls.GridView.GridViewCellsPanel.PrepareCell(GridViewCellBase cell, GridViewColumn column) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 403

       at Telerik.Windows.Controls.GridView.GridViewCellsPanel.GetVirtualizedCell(GridViewColumn column, Boolean createIfNull) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.Virtualization.cs:line 365

       at Telerik.Windows.Controls.GridView.GridViewCellsPanel.RealizeAndMeasureCells(Int32 startIndex, Int32 predictedLastIndex, Func`2 calculateNextIndex) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.Virtualization.cs:line 300

       at Telerik.Windows.Controls.GridView.GridViewCellsPanel.UpdateVirtualizedCells() in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.Virtualization.cs:line 235

       at Telerik.Windows.Controls.GridView.GridViewCellsPanel.MeasureOverride(Size availableSize) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 290

       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.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, Boolean& hasDesiredSizeUChanged)

       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.Control.MeasureOverride(Size constraint)

       at Telerik.Windows.Controls.GridView.GridViewRowItem.MeasureOverride(Size availableSize) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Rows\GridViewRowItem.cs:line 199

       at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

       at System.Windows.UIElement.Measure(Size availableSize)

       at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.NestedLayoutStrategy.MeasureChild(UIElement child, Size layoutSlotSize, Int32 i) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.NestedLayoutStrategy.cs:line 1575

       at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.NestedLayoutStrategy.MeasureOverride(Size constraint) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.NestedLayoutStrategy.cs:line 213

       at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.MeasureOverride(Size availableSize) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.cs:line 342

       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, Boolean& hasDesiredSizeUChanged)

       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.Control.MeasureOverride(Size constraint)

       at Telerik.Windows.Controls.GridView.GridViewDataControl.MeasureOverride(Size availableSize) in c:\TB\221\WPF_Scrum\Current_HotFix\Sources\Controls\GridView\GridView\GridView\GridViewDataControl.cs:line 6659

       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.StackPanel.StackMeasureHelper(IStackMeasure measureElement, IStackMeasureScrollData scrollData, Size constraint)

       at System.Windows.Controls.StackPanel.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.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 System.Windows.Controls.Control.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.ContextLayoutManager.UpdateLayout()

       at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)

       at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()

       at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)

       at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)

       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)

  InnerException: 

[Maya]

Hello Albert,

We used to have such issue before, but it has already been resolved. Could you clarify which version you are working with?  

Regards,
Maya
the Telerik team

[Albert]

Hi Maya,

I am using version 2013.1.0422.45.

Kind Regards,
Albert

[Albert]

Maya, what issue in the past caused this issue?

Kind Regards,
Albert

[Maya]

Hi Albert,

Tha StackTrace of the issue we had was exactly the same and was reproducible only when there are more than one DataAnnotations attributes added. Is that your case or is there something more specific ? 

All the best,
Maya
the Telerik team

[Albert]

This appears to be a bug with the RadGridView. It occurs when you have a column named "Item".

Is there a work-around or fix available?

Kind Regards,
Albert

[Albert]

I have a simple project that demonstrates the problem, but I am not able to access Telerik's Support Ticketing System as it is down at the moment... Here are some code snippets:

MainWindow.xaml:

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:telerik="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView"

        x:Class="ItemColumnBug.MainWindow"
        Title="MainWindow" Height="350" Width="525">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Button Content="PopulateWithItemColumn" Click="PopulateWithItemColumn_Click" />
<Button Grid.Row="1" Content="PopulateWithItemXXXColumn" Click="PopulateWithItemXXXColumn_Click" />
<telerik:RadGridView x:Name="RadGridView" Grid.Row="2"/>
</Grid>
</Window>

MainWindow.xaml.cs:

using System.Data;
using System.Linq;
using System.Windows;
using Telerik.Windows.Data;

namespace ItemColumnBug
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}

private void PopulateWithItemColumn_Click(object sender, RoutedEventArgs e)
{
LoadGrid("Item");
}

private void PopulateWithItemXXXColumn_Click(object sender, RoutedEventArgs e)
{
LoadGrid("ItemXXX");
}

private void LoadGrid(string columnName)
{
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn(columnName, typeof(string)));

DataRow newRow = dt.NewRow();
newRow[columnName] = "hello";
dt.Rows.Add((newRow));

newRow = dt.NewRow();
newRow[columnName] = "there";
dt.Rows.Add((newRow));

RadGridView.ItemsSource = dt;
}
}
}

[Maya]

Hello Albert,

Indeed, you are right - there is such an exception being thrown when you bind to a property named "Item". The thing is that the DataRow object has properties with name "Item" and when we try to invoke the GetProperty() method, it throws the exception. You can prove that with the following code:

DataTable dt = new DataTable();
          DataRow newRow = dt.NewRow();
          var hasItemProperty = newRow.GetType().GetProperties().Any(p => p.Name == "Item");
          var itemProperties = newRow.GetType().GetProperties().Where(p => p.Name == "Item");
          var count = itemProperties.Count();

The count of the items will be 6 in this case.
Nevertheless, I will handle the exception internally so that it is not thrown directly in release mode. Still, my recommendation would be to name your properties so that there is no confustion with default ones - like Item, Column, DataRow for example.
Anyway, thank you for the information and cooperation. I have updated your telerik points accordingly. Let me know if you have any further problems.

Regards,
Maya
the Telerik team

[Albert]

Thanks for the reply, Maya. When will the next release that includes the fix be?

Kind Regards,
Albert

[Maya]

Hi Albert,

The fix will be incuded in our next internal build coming on Monday as well as in our official release - Q2 2013.

 

Greetings,
Maya
the Telerik team

[Adige S.p.A]

I have the same problem with the RadPropertyGrid of WPF Q3 2013, I'm trying to do a binding to a "Value" property of my object


           propDef = new PropertyDefinition()
                    {
                        DisplayName = arg.Name.Value,
                        Description = arg.Description.Value,
                        Binding = new Binding()
                        {
                            Source = arg,
                            Path = new PropertyPath("Value", null)                            
                        },
                       
                        EditorTemplate = this.argTemplateSelector.SelectTemplate(arg, this.PropertyGrid)
                    }

but when the PropertyGrid is rendered on the screen I get an AmbiguousMatchException.

[Dimitrina]

Hi,

Your question is not related to RadGridView, so I would suggest you to post such questions in the respective forum category.

As to your particular case, have you referenced assemblies built against .NET Framework 4.0 or against .NET Framework 4.5? Would it also be possible for you to send us a sample project demonstrating the issue?

Regards,
Didie
Telerik