I work on a WPF application and face with the following issue: When someone who uses our application encounters an exception, we log it to our DB, including the stack trace of the exception. I've encountered an exception with the following stack trace:

System.ArgumentOutOfRangeException: index and length must refer to a location within the string.
Parameter Name: length
at- System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy)
at- Telerik.Windows.Controls.MilitaryDateParser.TryParseSingleDigitDatePart(DateTime& result, DateTime current, String datePart, DayMonthYearIndecesInfo dateIndeces)
at- Telerik.Windows.Controls.MilitaryDateParser.TryParse(String value, DateTime& result, DateTime current)
at- Telerik.Windows.Controls.CompositeDateTimeParser.TryParse(String value, DateTime& result, DateTime current)
at- Telerik.Windows.Controls.RadDateTimePicker.ParseDateTime(String text, IDateTimeParser parser, Nullable`1& dateTime)
at- Telerik.Windows.Controls.RadDateTimePicker.OnDateTimeTextChanged()
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, Boolean coerceWithCurrentValue, OperationType operationType)
at- System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
at- System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
at- System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
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.Input.InputManager.ProcessStagingArea()
at- System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
at- System.Windows.Interop.HwndKeyboardInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawKeyboardActions actions, Int32 scanCode, Boolean isExtendedKey, Boolean isSystemKey, Int32 virtualKey)
at- System.Windows.Interop.HwndKeyboardInputProvider.ProcessKeyAction(MSG& msg, Boolean& handled)
at- System.Windows.Interop.HwndSource.CriticalTranslateAccelerator(MSG& msg, ModifierKeys modifiers)
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)

The stack trace does not include anything that apply to a line from my application. I understand that something goes wrong with the input given to RadDateTimePicker and it's parsing during OnDateTimeTextChanged().

I want to find out what is the input that fails and also log it, so that next time something goes wrong, I will know the cause.How can I catch the exception, log the input and of course rethrow it?

Basically, in my code, I wrap the RadDateTimePicker with my own control, and bind to its DateTimeTextProperty:

BindingOperations.SetBinding(_radDateTimePicker, RadDateTimePicker.DateTimeTextProperty,
new Binding("DateTimeText")
{
Source = this,
Mode = BindingMode.TwoWay,
UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
});

I can listen to _radDateTimePicker events, for example: _radDateTimePicker.ParseDateTimeValue += OnRadDateTimePickerParseDateTimeValue;
Any suggestions, Please?

I just want to know the input the causes the error, and do something like that in the correct location in code:Try
{
}
Catch (ArgumentOutOfRangeException ex)
{
Throw new ArgumentException(String.Format("The input was {0}", input), ex)
}

Maybe I should put this code within some event of _radDateTimePicker that I listen to.Thanks!

Hey,i try to display to also display the miliseconds in the DateTime Picker. I changed the format like so:

As soon as I manually change the time in the textbox for example to 13.05.2015 09:57:40 200 and hit return, the selected datetime & textbox text will reset to 13.05.2015 09:57:40 000. What am I doing wrong? ​

I am using Telerik RadCartesianchart and I have a requirement where I need to show 2 more horizontal lines along with the X Axis, These lines are for alarms limits so that we can somehow display what is the low and high alarm limits we have for Y Axis data. Is there any way we can do that?

Hi,

We are trying to populate the parent / child data in hierarchical gridview at runtime. Columns of the grid view is based on the login user. So, we are not set the columns at design.

We use parent - child relationship as below code logic. We can see the parent details and child details. However, for child details, it is showing all information. It should be shown the data which is associated with the parent data.

  <commonData:ExtendedGridView x:Name="HierarchicalGridView1"  
                                             Grid.Column="0" Margin="55,27,0,10" Grid.ColumnSpan="2"
                                             CanUserReorderColumns="False" AutoGenerateColumns="False"   
                                             ShowGroupPanel="False" RowIndicatorVisibility="Collapsed"       
                                             ItemsSource="{Binding Source={StaticResource CollectionVM},Path=ParentCollection}"
                                             commonData:GridViewBindingBehavior.ColumnsCollection="{Binding Source={StaticResource CollectionVM},Path=DynParentColumns}"
                                             >
                            <telerik:RadGridView.ChildTableDefinitions >
                                <telerik:GridViewTableDefinition  >

                                    <telerik:GridViewTableDefinition.Relation>
                                        <telerik:TableRelation IsSelfReference="False">
                                            <telerik:TableRelation.FieldNames>
                                                <telerik:FieldDescriptorNamePair
                     ParentFieldDescriptorName="ORDNO"
                     ChildFieldDescriptorName="ORDNO" />
                                            </telerik:TableRelation.FieldNames>
                                        </telerik:TableRelation>
                                    </telerik:GridViewTableDefinition.Relation>
                                </telerik:GridViewTableDefinition>
                            </telerik:RadGridView.ChildTableDefinitions>


                            <telerik:RadGridView.HierarchyChildTemplate >
                                <DataTemplate>
                                    <commonData:ExtendedGridView ShowColumnHeaders="False" ItemsSource="{Binding Source={StaticResource CollectionVM},Path=ChildCollection}" AutoGenerateColumns="False"  ShowGroupPanel="False"
                                                         commonData:GridViewBindingBehavior.ColumnsCollection="{Binding Source={StaticResource CollectionVM},Path=DynParentColumns}" >
                                    </commonData:ExtendedGridView>
                                </DataTemplate>
                            </telerik:RadGridView.HierarchyChildTemplate>

Your help is much appreciated.

Thanks

VG

 

Hello,

1. When the Combobox receives the focus with a table, nothing appears with the OnLostFocus method and the LostFocus event.
Correct.

2. When the ComboBox is clicked with the mouse the OnLostFocus method is called and then the LostFocus event is raised.
Error: these should not be called.

3. When the ComboBox loses the focus, the LostFocus event is raised, but the OnLostFocus method is not called.
Error: the OnLostFocus method should be called.

Normally, this OnLostFocus method should fire the LostFocus event. It seems to be bypassed in position 3.

Is there a way the RadScheduleView can be export to excel?

I have case in my code where I use VirtualQueryableCollectionView bind to RadGridView. I want to after VirtualQueryableCollectionView load records from query map to other objects. Something like that:


This will allow me to bind to WorkViewModel which contains extra logic. But constructor throws exception:


Are there any possibilities to force VirtualQueryableCollectionView to map loaded objects to other objects.

I'm trying to figure out how to deal with terribly poor performances of my application during pan operations.

Basically when the user starts panning a diagram the CPU goes 100%. Things seems getting worse when the navigation pane is visible.

 

Profiling the application, it seems that the issue is caused by RadDiagram calling the BackgroundLineBase.PrepareLine method thousand times.

Strangely enough I've managed to reproduce the issue in this project from your sample codebase:

• open the application
• drag some shapes on the diagram 
• start panning (at least a second or two)
•  => the CPU goes 100%​

 

 Can you provide some advice on how to mitigate / fix the issue?

Hi,

 Is there a way to show a tooltip with the value of the slider of the current position of the mouse over the track? So the user know the value is going to select beforehand.

Thanks, Jose

I need to understand the best way to accomplish this.

I have an ItemType list.  For each ItemType, I specify the type of TreeNode that can be defined.  So, then I have an Item list.  Each Item is assigned an ItemType and has a Children property which are more Item objects thus making the Hierarchy.

Question is, how do I filter the items in the Item Type Column's ComboBox in relation to the selected Hierarchy Node?

For pseudo code, do I:

• Load the master Item Type list
• Load the Hierarchy
• Recursively Traverse the Hierarchy attaching the related Item Types to each node
• Then, Bind?

Thanks for your help,

Joel

 

TreeListView Definition: