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RadDataFilter ArgumentException

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DataFilter

This is a migrated thread and some comments may be shown as answers.

Bart Reekmans asked on 15 Jun 2012, 01:06 PM

Hi,

I'm trying to use a radfilter that filters the items in my radgridview, based on textinput in a textbox

this is my code :

private void textBoxFilterValue_TextChanged(object sender, TextChangedEventArgs e)

{

string text = (sender as RadWatermarkTextBox).CurrentText;

if (!string.IsNullOrEmpty(text))

{

if (mGridView != null && mFilter != null)

{

FilterDescriptor birthDateFilter = new FilterDescriptor();

birthDateFilter.Member = "HtmlValue";

birthDateFilter.Operator = FilterOperator.Contains;

birthDateFilter.Value = text;

birthDateFilter.IsCaseSensitive = false;

mFilter.FilterDescriptors.Add(birthDateFilter);

}

else

{

mFilter.FilterDescriptors.Clear();

}

but I get the following exception :

at Telerik.Windows.Data.Expressions.EnumerableFilterOperatorExpressionBuilder.GenerateContainsMethodCall(Expression source, Expression value, Boolean shouldNegate)

at Telerik.Windows.Data.Expressions.EnumerableFilterOperatorExpressionBuilder.GenerateContains(Expression left, Expression right)

at Telerik.Windows.Data.Expressions.FilterOperatorExpressionBuilderBase.CreateExpression(Expression left, Expression right)

at Telerik.Windows.Data.Expressions.OperatorValueFilterDescriptorExpressionBuilderBase.CreateBodyExpression()

at Telerik.Windows.Data.FilterDescriptor.CreateFilterExpression(ParameterExpression parameterExpression)

at Telerik.Windows.Data.FilterDescriptorBase.CreateFilterExpression(Expression instance)

at Telerik.Windows.Data.Expressions.FilterDescriptorCollectionExpressionBuilder.CreateBodyExpression()

at Telerik.Windows.Data.CompositeFilterDescriptor.CreateFilterExpression(ParameterExpression parameterExpression)

at Telerik.Windows.Data.FilterDescriptorBase.CreateFilterExpression(Expression instance)

at Telerik.Windows.Data.CompositeFilterDescriptorCollection.CreateFilterExpression(Expression instance)

at Telerik.Windows.Data.ICompositeFilterDescriptorExtensions.GetFilterFunction(ICompositeFilterDescriptor filterDescriptors, Type itemType)

at Telerik.Windows.Data.QueryableCollectionView.InitializeInternalList(IQueryable view)

at Telerik.Windows.Data.QueryableCollectionView.CreateInternalList()

at Telerik.Windows.Data.QueryableCollectionView.EnsureInternalList()

at Telerik.Windows.Data.QueryableCollectionView.get_InternalList()

at Telerik.Windows.Data.QueryableCollectionView.EnsureRootGroup()

at Telerik.Windows.Data.QueryableCollectionView.get_Groups()

at Telerik.Windows.Controls.GridView.BaseItemsControl.GetEffectiveItems(BaseItemsControl itemsControl)

at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.EnsureIndexTree()

at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.get_IndexTree()

at Telerik.Windows.Controls.GridView.GridViewDataControl.InitializeShouldKeepScrollState()

at Telerik.Windows.Controls.GridView.GridViewDataControl.OnItemsChanged(NotifyCollectionChangedEventArgs e)

at Telerik.Windows.Controls.GridView.BaseItemsControl.OnItemCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)

at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)

at Telerik.Windows.Data.DataItemCollection.OnCollectionChanged(NotifyCollectionChangedEventArgs e)

at Telerik.Windows.Data.DataItemCollection.OnCollectionViewCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)

at Telerik.Windows.Data.Listener`2.ReceiveWeakEvent(Object sender, TArgs args)

at Telerik.Windows.Data.WeakEvent.WeakListener`1.Handler(Object sender, TArgs args)

at Telerik.Windows.Data.QueryableCollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)

at Telerik.Windows.Data.QueryableCollectionView.RefreshOverride()

at Telerik.Windows.Data.QueryableCollectionView.RefreshInternal()

at Telerik.Windows.Data.QueryableCollectionView.RefreshOrDefer()

at Telerik.Windows.Data.QueryableCollectionView.InvalidatePagingAndRefresh()

at Telerik.Windows.Data.QueryableCollectionView.OnFilterDescriptorsCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)

at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)

at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)

at Telerik.Windows.Data.RadObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)

at Telerik.Windows.Data.ObservableItemCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)

at System.Collections.ObjectModel.ObservableCollection`1.InsertItem(Int32 index, T item)

at Telerik.Windows.Data.RadObservableCollection`1.InsertItem(Int32 index, T item)

at Telerik.Windows.Data.FilterDescriptorCollection.InsertItem(Int32 index, IFilterDescriptor item)

at System.Collections.ObjectModel.Collection`1.Insert(Int32 index, T item)

at System.Collections.ObjectModel.Collection`1.System.Collections.IList.Insert(Int32 index, Object value)

at Telerik.Windows.Data.CollectionHelper.Insert(IList target, IEnumerable newItems, Int32 startingIndex, IEqualityComparer itemComparer)

at Telerik.Windows.Data.ObservableCollectionManager.HandleCollectionChanged(IList sender, NotifyCollectionChangedEventArgs args)

at Telerik.Windows.Data.ObservableCollectionManager.Telerik.Windows.Data.IWeakEventListener<System.Collections.Specialized.NotifyCollectionChangedEventArgs>.ReceiveWeakEvent(Object sender, NotifyCollectionChangedEventArgs args)

at Telerik.Windows.Data.WeakEvent.WeakListener`1.Handler(Object sender, TArgs args)

at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)