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Programmatically set filters
I tried to set filters for the GridView but it crashes. The error is the following one :

Expression of type 'System.Object' cannot be used for parameter of type 'System.String' of method 'Boolean Contains(System.String)'




I'm not sure why, is the code wrong or something. See below, I tried adding a filter descriptor, both ways but doesn't work.

FilterDescriptor ofilter = new FilterDescriptor(); 
ofilter.Member = radGridView1.Columns["Type"].UniqueName; 
ofilter.Operator = FilterOperator.IsContainedIn; 
ofilter.Value = sMask.ToString(); 
radGridView1.FilterDescriptors.Add(ofilter); 
radGridView1.FilterDescriptors.Add(new FilterDescriptor("Type", FilterOperator.IsContainedIn, sMask)); 

I tried the same way as setting a sort in the rows and this one works well.

SortDescriptor descriptor = new SortDescriptor(); 
descriptor.Member = "Type"; 
descriptor.SortDirection = ListSortDirection.Ascending; 
radGridView1.SortDescriptors.Add(descriptor); 

Work around or sample code would be appreciated.
Thanks,
Siegfrid
GridView
Sieg
Top achievements
Rank 1
 answered on 05 Apr 2010
4 answers
141 views
'TransitionProvider' type does not have a public TypeConverter class.
First attempt to use the new control and I get an error I've never seen before (and apparently no one in the internet has either). What does it mean?

'TransitionProvider' type does not have a public TypeConverter class.



TransitionControl
Art Kedzierski
Top achievements
Rank 2
 answered on 05 Apr 2010
5 answers
184 views
Unbound Datagrid error
I'm a bid fed up with WPF databounding and is trying out the non-databound road :)

Probably me thats doing something wrong, But I get this error:
"Operation is not valid while ItemsSource is in use. Access and modify elements with ItemsControl.ItemsSource instead."

I modified your FirstLook example by adding this method to the codebehind:
        private void LB() 
        { 
            System.Data.DataTable dv = ExamplesDB.GetCustomers(); 
 
            foreach (System.Data.DataRow dr in dv.Rows) 
            { 
                radGridViewFirstLook.Items.Add(dr); 
            } 
        } 

And removing the DataContext and ItemSource setters in the XAML file:
<QuickStart:ExampleControl x:Class="Telerik.Windows.Examples.GridView.FirstLook.Example" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:QuickStart="clr-namespace:Telerik.Windows.QuickStart;assembly=Telerik.Windows.QuickStart" 
    xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" 
    xmlns:e="clr-namespace:Telerik.Windows.Examples"> 
    <Grid> 
        <telerik:RadGridView Name="radGridViewFirstLook" ColumnsWidthMode="Fill" AutoGenerateColumns="False" Margin="0,0,-1,0"> 
            <telerik:RadGridView.Columns> 
                <telerik:GridViewDataColumn Width="100" IsReadOnly="False" DataType="{x:Null}"  HeaderText="Customer ID" UniqueName="CustomerID" /> 
                <telerik:GridViewDataColumn Width="100" DataType="{x:Null}" HeaderText="Company Name" UniqueName="CompanyName" /> 
                <telerik:GridViewDataColumn Width="100" DataType="{x:Null}" HeaderText="Country" UniqueName="Country" /> 
                <telerik:GridViewDataColumn Width="100" IsReadOnly="False" DataType="{x:Null}" HeaderText="City"  UniqueName="City" /> 
                <telerik:GridViewDataColumn Width="100" DataType="{x:Null}" HeaderText="Contact Name"  UniqueName="ContactName" /> 
                <telerik:GridViewDataColumn Width="100" DataType="{x:Null}" HeaderText="Bool" UniqueName="Bool" /> 
            </telerik:RadGridView.Columns> 
        </telerik:RadGridView> 
        <telerik:RadPanelBar Height="6" Margin="232,0,284,-330" Name="radPanelBar1" VerticalAlignment="Bottom" /> 
    </Grid> 
</QuickStart:ExampleControl> 

Why isn't this working - I'm not using ItemsSource?





GridView
Rossen Hristov
Telerik team
 answered on 05 Apr 2010
1 answer
124 views
Copying individual or multiple cells from the DataGrid
I want to do the following using the DataGrid view

1. Copy individual or multiple cells from the Grid, and paste to a text file
    -- When I try to do this, I am copying the whole row. I just want to copy one cell, or multiple cell. I want functionality similar to Excel
2. Copy contents of one or more cells and copy to a different section of the Grid
    -- I am not sure if the current control supports it or not. When I tried to do this on a sample Grid, it didn't work

GridView
Rossen Hristov
Telerik team
 answered on 05 Apr 2010
1 answer
74 views
Styling Selected Row Transition
Hello,

What is the quickest way to remove/style the transition animation that occurs when shifting focus from one row to the next. It appears that there is an animation fading out the selected row colour, and we'd like to remove that.

Thanks
GridView
Kalin Milanov
Telerik team
 answered on 05 Apr 2010
1 answer
362 views
Set ToolTip in CheckBox
I would like to know if it is possible to set programmatically a tooltip in the GridViewSelectColumn´s checkcoxes.
GridView
Rossen Hristov
Telerik team
 answered on 05 Apr 2010
4 answers
174 views
ContextMenu.ItemClick event and Tag issue
Hello,

I'm programmably creating menu items within the context menu.  I assign one a Tag property, but the MenuItem in the event argument that comes back in the ItemClick event has a null Tag, so I'm not sure why that is the case?  The tag is set in the collection of items in the menu....

Thanks.
ContextMenu
Brian Mains
Top achievements
Rank 1
 answered on 03 Apr 2010
1 answer
179 views
DbIsNullExpression
Hello,
     I am trying to work with the RadGridView and implement the external filter example in your How To section.  I have been getting this error that I cannot seem to figure out.  It happens when I type in the search to box and it occurs with a column header click event.  At first I thought it had to do with saving and loading the state of the grid, but now I am not so sure.  The error is being thrown in the CustomFilterDescription Class on the property FilterValue() and on the line:
Me.OnPropertyChanged("FilterValue")

Here is the error I am getting with the search for. (any suggestions would be appreciated)

System.ArgumentException was unhandled by user code
  Message=The argument to DbIsNullExpression must refer to a primitive or reference type.
  Source=System.Data.Entity
  StackTrace:
       at System.Data.Common.CommandTrees.ExpressionBuilder.Internal.ArgumentValidation.ValidateIsNull(DbExpression argument, Boolean allowRowType)
       at System.Data.Objects.ELinq.ExpressionConverter.EqualsTranslator.CreateIsNullExpression(ExpressionConverter parent, Expression input)
       at System.Data.Objects.ELinq.ExpressionConverter.EqualsTranslator.TypedTranslate(ExpressionConverter parent, BinaryExpression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TypedTranslator`1.Translate(ExpressionConverter parent, Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateExpression(Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.NotTranslator.TypedTranslate(ExpressionConverter parent, UnaryExpression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TypedTranslator`1.Translate(ExpressionConverter parent, Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateExpression(Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.NotEqualsTranslator.TypedTranslate(ExpressionConverter parent, BinaryExpression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TypedTranslator`1.Translate(ExpressionConverter parent, Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateExpression(Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.ConditionalTranslator.TypedTranslate(ExpressionConverter parent, ConditionalExpression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TypedTranslator`1.Translate(ExpressionConverter parent, Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateExpression(Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.BinaryTranslator.TypedTranslate(ExpressionConverter parent, BinaryExpression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TypedTranslator`1.Translate(ExpressionConverter parent, Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateExpression(Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateIntoCanonicalFunction(String functionName, Expression Expression, Expression[] linqArguments)
       at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.CanonicalFunctionDefaultTranslator.Translate(ExpressionConverter parent, MethodCallExpression call)
       at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.TypedTranslate(ExpressionConverter parent, MethodCallExpression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TypedTranslator`1.Translate(ExpressionConverter parent, Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateExpression(Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateFunctionIntoLike(MethodCallExpression call, Boolean insertPercentAtStart, Boolean insertPercentAtEnd, Func`5 defaultTranslator)
       at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.StringContainsTranslator.Translate(ExpressionConverter parent, MethodCallExpression call)
       at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.TypedTranslate(ExpressionConverter parent, MethodCallExpression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TypedTranslator`1.Translate(ExpressionConverter parent, Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateExpression(Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.EqualsTranslator.TypedTranslate(ExpressionConverter parent, BinaryExpression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TypedTranslator`1.Translate(ExpressionConverter parent, Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateExpression(Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateLambda(LambdaExpression lambda, DbExpression input)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateLambda(LambdaExpression lambda, DbExpression input, DbExpressionBinding& binding)
       at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.OneLambdaTranslator.Translate(ExpressionConverter parent, MethodCallExpression call, DbExpression& source, DbExpressionBinding& sourceBinding, DbExpression& lambda)
       at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.OneLambdaTranslator.Translate(ExpressionConverter parent, MethodCallExpression call)
       at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.SequenceMethodTranslator.Translate(ExpressionConverter parent, MethodCallExpression call, SequenceMethod sequenceMethod)
       at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.TypedTranslate(ExpressionConverter parent, MethodCallExpression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TypedTranslator`1.Translate(ExpressionConverter parent, Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateExpression(Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.OneLambdaTranslator.Translate(ExpressionConverter parent, MethodCallExpression call, DbExpression& source, DbExpressionBinding& sourceBinding, DbExpression& lambda)
       at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.OneLambdaTranslator.Translate(ExpressionConverter parent, MethodCallExpression call)
       at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.SequenceMethodTranslator.Translate(ExpressionConverter parent, MethodCallExpression call, SequenceMethod sequenceMethod)
       at System.Data.Objects.ELinq.ExpressionConverter.MethodCallTranslator.TypedTranslate(ExpressionConverter parent, MethodCallExpression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TypedTranslator`1.Translate(ExpressionConverter parent, Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.TranslateExpression(Expression linq)
       at System.Data.Objects.ELinq.ExpressionConverter.Convert()
       at System.Data.Objects.ELinq.ELinqQueryState.GetExecutionPlan(Nullable`1 forMergeOption)
       at System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
       at System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
       at System.Data.Objects.ObjectQuery`1.GetEnumeratorInternal()
       at System.Data.Objects.ObjectQuery.System.Collections.IEnumerable.GetEnumerator()
       at Telerik.Windows.Data.QueryableCollectionView.PopulateInternalList(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.get_IsEmpty()
       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.Telerik.Windows.Data.IWeakEventListener<System.Collections.Specialized.NotifyCollectionChangedEventArgs>.ReceiveWeakEvent(Object sender, NotifyCollectionChangedEventArgs e)
       at Telerik.Windows.Data.WeakEvent.WeakListener`1.Handler(Object sender, TArgs args)
       at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
       at Telerik.Windows.Data.QueryableCollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
       at Telerik.Windows.Data.QueryableCollectionView.RefreshAndRaiseCollectionChanged(NotifyCollectionChangedEventArgs args)
       at Telerik.Windows.Data.QueryableCollectionView.Refresh()
       at Telerik.Windows.Data.QueryableCollectionView.RefreshOrDefer()
       at Telerik.Windows.Data.QueryableCollectionView.OnFilterDescriptorsItemChanged(Object sender, ItemChangedEventArgs`1 e)
       at Telerik.Windows.Data.ObservableItemCollection`1.OnItemChanged(ItemChangedEventArgs`1 e)
       at Telerik.Windows.Data.ObservableItemCollection`1.OnItemPropertyChanged(Object sender, PropertyChangedEventArgs e)
       at System.ComponentModel.PropertyChangedEventHandler.Invoke(Object sender, PropertyChangedEventArgs e)
       at Telerik.Windows.Data.FilterDescriptorBase.OnPropertyChanged(PropertyChangedEventArgs args)
       at Telerik.Windows.Data.FilterDescriptorBase.OnPropertyChanged(String propertyName)
       at FRPilot.Core.CustomFilterDescriptor.set_FilterValue(String value) in C:\Development\FRPilot\Core\FRPilot.Core\CustomFilterDescriptor.vb:line 25
       at FRPilot.View.GroupView.SearchForTextBox_TextChanged(Object sender, TextChangedEventArgs e) in C:\Development\FRPilot\Presentation\FRPilot.View\Views\GroupView.xaml.vb:line 104
       at System.Windows.Controls.TextChangedEventArgs.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 e)
       at System.Windows.Controls.Primitives.TextBoxBase.OnTextChanged(TextChangedEventArgs e)
       at System.Windows.Controls.Primitives.TextBoxBase.OnTextContainerChanged(Object sender, TextContainerChangedEventArgs e)
       at System.Windows.Controls.TextBox.OnTextContainerChanged(Object sender, TextContainerChangedEventArgs e)
       at System.Windows.Documents.TextContainerChangedEventHandler.Invoke(Object sender, TextContainerChangedEventArgs e)
       at System.Windows.Documents.TextContainer.EndChange(Boolean skipEvents)
       at System.Windows.Documents.TextContainer.System.Windows.Documents.ITextContainer.EndChange(Boolean skipEvents)
       at System.Windows.Documents.TextRangeBase.EndChange(ITextRange thisRange, Boolean disableScroll, Boolean skipEvents)
       at System.Windows.Documents.TextRange.System.Windows.Documents.ITextRange.EndChange(Boolean disableScroll, Boolean skipEvents)
       at System.Windows.Documents.TextRange.ChangeBlock.System.IDisposable.Dispose()
       at System.Windows.Documents.TextEditorTyping.DoTextInput(TextEditor This, String textData, Boolean isInsertKeyToggled, Boolean acceptControlCharacters)
       at System.Windows.Documents.TextEditorTyping.TextInputItem.Do()
       at System.Windows.Documents.TextEditorTyping.ScheduleInput(TextEditor This, InputItem item)
       at System.Windows.Documents.TextEditorTyping.OnTextInput(Object sender, TextCompositionEventArgs e)
       at System.Windows.Controls.Primitives.TextBoxBase.OnTextInput(TextCompositionEventArgs e)
       at System.Windows.UIElement.OnTextInputThunk(Object sender, TextCompositionEventArgs e)
       at System.Windows.Input.TextCompositionEventArgs.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.TextCompositionManager.UnsafeCompleteComposition(TextComposition composition)
       at System.Windows.Input.TextCompositionManager.PostProcessInput(Object sender, ProcessInputEventArgs e)
       at System.Windows.Input.InputManager.RaiseProcessInputEventHandlers(ProcessInputEventHandler postProcessInput, ProcessInputEventArgs processInputEventArgs)
       at System.Windows.Input.InputManager.ProcessStagingArea()
       at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
       at System.Windows.Input.TextCompositionManager.UnsafeStartComposition(TextComposition composition)
       at System.Windows.Input.TextCompositionManager.PostProcessInput(Object sender, ProcessInputEventArgs e)
       at System.Windows.Input.InputManager.RaiseProcessInputEventHandlers(ProcessInputEventHandler postProcessInput, ProcessInputEventArgs processInputEventArgs)
       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.HwndKeyboardInputProvider.ProcessTextInputAction(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at System.Windows.Interop.HwndSource.OnPreprocessMessage(Object param)
       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:
GridView
shawn slatunas
Top achievements
Rank 1
 answered on 02 Apr 2010
1 answer
96 views
horizontal scroll does not move
Hi Team,

I have the problem about horizontal scrolling.
In the following case, a horizontal scroll does not move.

AutoGenerateColumns = False
(when binding data to a column manually)
EnableColumnVirtualization = True
column width is specified on the Code.

Version: Telerik RadControls for WPF 2010 Q1 Trial

Is there any method of avoiding this problem?

Please help me.

Regards,
athasian.
GridView
Rossen Hristov
Telerik team
 answered on 02 Apr 2010
1 answer
82 views
A more specific BringItemIntoView()?
Just wondering if there was something like BringItemIntoView(), but that could bring the item exactly to a desired position?

Something like 

radTreeView.BringItemIntoView(radTreeView.SelectedItem, new Point(0, 100)); 

Let me know.

Thanks!
TreeView
Kiril Stanoev
Telerik team
 answered on 02 Apr 2010
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