Questions on UI for WPF Forum

25,544 questions

4 answers

166 views

I'm evaluating RadGridView (WPF) with an OData service. Version 2012.2.607.40
Seeing some very strange behavior with a simple application.

My service schema exposes:

ResourceSetA (1 item)
ResourceSetB (3 items)
ResourceSetC (6713 items)

I'm monitoring calls to the service with Fiddler2.

I have a simple test app with a RadGridView in a Window by itself, its ItemsSource bound to a DataServiceQuery<T> property from my service client proxy.

When T=ResourceA, the service calls are essentially:

/Service.svc/ResourceSetA()/$count
/Service.svc/ResourceSetA()?$skip=0&$top=1

and the grid displays the single item correctly.

When T=ResourceB, the service calls are:

/Service.svc/ResourceSetB()/$count
/Service.svc/ResourceSetB()?$skip=0&$top=3

and the grid displays three items correctly.

When T=ResourceC, I only see a single call, which appears to return the correct count according to Fiddler (6713):

/Service.svc/ResourceSetC()/$count

but my client application hangs and makes no further OData calls. Watching the process in Task Manager, it eats memory steadily and eventually falls over with an OutOfMemoryException.

My app is really the simplest example I can craft, and my service is responding correctly when I issue calls to it directly from a browser.
What could I be doing wrong here?

GridView

answered on 15 Jun 2012

0 answers

68 views

Telerik BaseOn HowTo

Hi,

in my project I use the OfficeBlue Telerik theme. I want to customize my StatusBar base on my Telerik theme.

Actually I have CustomStyles.xaml and I want to use some Telerik resource keys instead of their corresponding
value but I don't know to do it, here is my XAML file:

</ResourceDictionary>

General Discussions

asked on 15 Jun 2012

0 answers

133 views

How to use IsGreaterThan with string length.

Hi!
I have a RadGridview where i have few columns and based on this column i have to sort only those columns whose length is greater than 4 if the rows have string with length less than 4 those should not be visible.

I tried using CompositeFilterDescriptor but it does not filter for string with length less than 4.
I tried the following code.

                This Code works fine:
              CompositeFilterDescriptor FilterAnd = new CompositeFilterDescriptor();
                FilterAnd.FilterDescriptors.Add(new FilterDescriptor("CustName", FilterOperator.IsNotEqualTo, ""));
                FilterAnd.FilterDescriptors.Add(new FilterDescriptor("CustName", FilterOperator.IsNotEqualTo, null));
                FilterAnd.FilterDescriptors.Add(new FilterDescriptor("CustAddress", FilterOperator.IsNotEqualTo, ""));
                FilterAnd.FilterDescriptors.Add(new FilterDescriptor("CustAddress", FilterOperator.IsNotEqualTo, null));
                FilterAnd.FilterDescriptors.Add(new FilterDescriptor("CustCity", FilterOperator.IsNotEqualTo, ""));
                FilterAnd.FilterDescriptors.Add(new FilterDescriptor("CustCity", FilterOperator.IsNotEqualTo, null));
                FilterAnd.LogicalOperator = FilterCompositionLogicalOperator.And;

                This code is not working:
                CompositeFilterDescriptor FilterOr = new CompositeFilterDescriptor();
                FilterOr.FilterDescriptors.Add(new FilterDescriptor("CustName", FilterOperator.IsGreaterThan, 4));
                FilterOr.FilterDescriptors.Add(new FilterDescriptor("CustAddress", FilterOperator.IsGreaterThan, 4));
                FilterOr.FilterDescriptors.Add(new FilterDescriptor("CustCity", FilterOperator.IsGreaterThan, 4));
                FilterOr.LogicalOperator = FilterCompositionLogicalOperator.Or;

                grid.FilterDescriptors.Add(FilterAnd);
                grid.FilterDescriptors.Add(FilterOr);

How can i use IsGreaterThan with string length can any one help me?

GridView

asked on 15 Jun 2012

2 answers

136 views

RadDataFilter ArgumentException

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)