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Hi,

I need to remove the point marks in attached radchart. Please find my attachment.Please let me know how can i achieve this.


Regards,
Rakesh Kumar
Peshito
Telerik team
 answered on 26 Aug 2013
1 answer
174 views
Hi,

I am executing sql queries that are returning over 100,000 rows.  The grid visualization handles these large results easily.  From what I can gather the rows visible on screen are in memory and the rest are in some kind of cache.  I am saving the results that I set in itemssource for future review where the client does not have access to the database. I want to provide a result viewer where the client can drill down on very large data sets using the excellent adhoc filtering capabilities of the grid   The major problem that I am having is the amount of time it takes to serialize and deserialize and sometimes getting out of memory.  Since the grids UI virtualization capabilities must have dealt with these issues in some form I was hoping that you could provide me with some ideas on how to handle the serialization problem.

The following shows the coding to get the data. clientData.Result is what needs to be serialized and deserialized.  As you can see this is generic code to handle any resultset.  

clientData.Result = new ObservableCollection<dynamic>()

while (dataReader.Read())
{
  Dictionary<string, object> clientRow = new Dictionary<string, object>();

         for (int i = 0; i < dataReader.FieldCount; i++)
         {
             string myKey = clientData.ColumnInfo[i].UniqueColumnName;
             object myValue = null;

             if (DBNull.Value != dataReader[i] && clientData.ColumnInfo[i].ProviderSpecificDataType != "Microsoft.SqlServer.Types.SqlHierarchyId")
             {
myValue = dataReader[i];
             }
             clientRow.Add(myKey, myValue);
         }
clientData.Result.Add(new CloudburstUtilities.ClientRow(ToDictionary(clientRow)));
}


public static IDictionary<string, object> ToDictionary(IDictionary<string, object> row)
{
            var dict = new Dictionary<string, object>();
            foreach (KeyValuePair<string, object> column in row)
            {
                dict.Add(column.Key, column.Value);
            }
            return dict;
 }

Thanks
Rich
Rossen Hristov
Telerik team
 answered on 26 Aug 2013
0 answers
188 views
Hi, I have:
1) Telerik 2013 Q2 SP1;
2) Entity Framework DB (Linq to MySql);
3) Simple table: FirstName(NotNull),  LastName(NotNull), Date(Null).
4) Checked for NULL (in MySQL DB and in my Project), i.e. both properties must be NotNull;
5) Made a row validation (it's working, but when I press ESC and then trying to edit another row => the TargetInvocationException fires or smth similar in files such as Cell....cs, Gridview.....cs - I even don't have it);
The question is how to prevent this?
Code:

private TestDB testDB;

public MainWindow()
{
InitializeComponent();
testDB = new testDBEntities();
radGridView.ItemsSource = testDB.Person;

}

private
void radGridView_AddingNewDataItem(object sender, GridViewAddingNewEventArgs e)
       {
           e.NewObject = new Person();
           testDB.Persons.Add((Person)e.NewObject);
       }
        
           private void radGridView_RowEditEnded(object sender, GridViewRowEditEndedEventArgs e)
       {
           if (e.EditAction == GridViewEditAction.Cancel)  return;
           if (e.EditOperationType == GridViewEditOperationType.Edit)
           {
                   testDB.SaveChanges();
                   radGridView.Rebind();
           }
           else if (e.EditOperationType == GridViewEditOperationType.Insert)
           {
               testDB.SaveChanges();
               radGridView.Rebind();
           }
       }
Dan
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 asked on 25 Aug 2013
1 answer
208 views

My MVVM app loads user defined polygons from a DB and then databinds the information layer (after the map is initialised, as suggested in the documentation).

When I explicitly declare the colours in the data template the binding works perfectly. But when I data bind the colours (using a converter to convert them to a SolidColorBrush) it doesn't display the shapes at all.

Here's the XAML...

<
telerik:RadMap x:Name="mapControl" Center="53.54245,-2.298817" ZoomLevel="7">
    <telerik:InformationLayer x:Name="shapeLayer" Visibility="Visible">
        <telerik:InformationLayer.ItemTemplate>
            <DataTemplate>
                <telerik:MapPolyline Fill="{Binding Fill, Converter={StaticResource converter}}" Opacity="0.5"  Points="{Binding Points}" Stroke="{Binding Stroke, Converter={StaticResource converter}}" StrokeThickness="2" />
            </DataTemplate>
        </telerik:InformationLayer.ItemTemplate>
    </telerik:InformationLayer>
</telerik:RadMap>

Here's the view model that I'm using for each shape.

    public class ShapeViewModel : ViewModelBase
    {
        private LocationCollection _points;
        private Color _stroke;
        private Color _fill;
 
        public LocationCollection Points
        {
            get { return _points; }
            set
            {
                if (_points != value)
                {
                    _points = value;
                    OnPropertyChanged(() => Points);
                }
            }
        }
 
        public Color Fill
        {
            get { return _fill; }
            set
            {
                if (_fill != value)
                {
                    _fill = value;
                    OnPropertyChanged(() => Fill);
                }
            }
        }
 
        public Color Stroke
        {
            get { return _stroke; }
            set
            {
                if (_stroke != value)
                {
                    _stroke = value;
                    OnPropertyChanged(() => Stroke);
                }
            }
        }
    }

I don't see any binding errors in my output window.

Thanks
Ben

ben crinion
Top achievements
Rank 1
 answered on 23 Aug 2013
3 answers
90 views
We have a requirement to display, along with other columns, a cumulative value column within the RadGridView.  To do this we attach a behavior to the RadGridView.  The relevant code from the behavior is this:

protected override void OnAttached()
       {
           AssociatedObject.DataLoaded += AssociatedObject_DataLoaded;
           AssociatedObject.RowEditEnded += AssociatedObject_RowEditEnded;
           base.OnAttached();
       }
 
       void AssociatedObject_RowEditEnded(object sender, GridViewRowEditEndedEventArgs e)
       {
           // This is the call to Rebind that causes the exception
           AssociatedObject.Rebind();
       }
 
       protected override void OnDetaching()
       {
           AssociatedObject.DataLoaded -= AssociatedObject_DataLoaded;
           AssociatedObject.RowEditEnded -= AssociatedObject_RowEditEnded;
           base.OnDetaching();
       }
 
       void AssociatedObject_DataLoaded(object sender, EventArgs e)
       {
           UpdateTotalLengths();
           UpdateComponentNumber();
       }
 
       private void UpdateComponentNumber()
       {
           Int32 index = 1;
           foreach (MyComponent component in AssociatedObject.Items.OfType<MyComponent>())
           {
               component.Number = index;
               index++;
           }
       }
 
       private void UpdateTotalLengths()
       {
           var totalLength = 0d;
           foreach (var component in AssociatedObject.Items.OfType<MyComponent>())
           {
               totalLength += component.Length;
               component.TotalLength = totalLength;
           }
       }

The basic idea of the above code is that on RowEndEdit and on DataLoaded the cumulativelength value is recalculated.

Everything works as expected when the user selects another row after editing a row (i.e. the cumulative length is updated).  However when the user clicks on anywhere else in the UI an ArgumentNullException is thrown (the message is 'Value cannot be null').  The Stack trace is:

at Telerik.Windows.Controls.ParentOfTypeExtensions.<GetParents>d__0.MoveNext() in c:\TB\102\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\Extensions\ParentOfTypeExtensions.cs:line 74
at System.Linq.Enumerable.<OfTypeIterator>d__aa`1.MoveNext()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at Telerik.Windows.Controls.GridView.GridViewCell.HandlePendingEdit(UIElement focusedElement) in c:\TB\102\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 1021
at Telerik.Windows.Controls.GridView.GridViewCell.HandlePendingEditOnLostFocus() in c:\TB\102\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 899
at Telerik.Windows.Controls.GridView.GridViewDataControl.HandleLostFocus(DependencyObject focusedDependencyObject) in c:\TB\102\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Editing.cs:line 508
at Telerik.Windows.Controls.GridView.GridViewDataControl.HandleLostFocus() in c:\TB\102\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Editing.cs:line 456
at Telerik.Windows.Controls.GridView.GridViewDataControl.OnLostFocus(RoutedEventArgs e) in c:\TB\102\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Editing.cs:line 450
at System.Windows.UIElement.IsFocused_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
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.ClearValueCommon(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata)
at System.Windows.DependencyObject.ClearValue(DependencyPropertyKey key)
at System.Windows.Input.FocusManager.OnFocusedElementChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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.Input.FocusManager.SetFocusedElement(DependencyObject element, IInputElement value)
at System.Windows.Input.KeyboardNavigation.UpdateFocusedElement(DependencyObject focusTarget)
at System.Windows.FrameworkElement.OnGotKeyboardFocus(Object sender, KeyboardFocusChangedEventArgs e)
at System.Windows.Input.KeyboardFocusChangedEventArgs.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.KeyboardDevice.ChangeFocus(DependencyObject focus, Int32 timestamp)
at System.Windows.Input.KeyboardDevice.TryChangeFocus(DependencyObject newFocus, IKeyboardInputProvider keyboardInputProvider, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)
at System.Windows.Input.KeyboardDevice.Focus(DependencyObject focus, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)
at System.Windows.Input.KeyboardDevice.Focus(IInputElement element)
at System.Windows.UIElement.Focus()
at System.Windows.Controls.ScrollViewer.OnMouseLeftButtonDown(MouseButtonEventArgs e)
at System.Windows.UIElement.OnMouseLeftButtonDownThunk(Object sender, MouseButtonEventArgs e)
at System.Windows.Input.MouseButtonEventArgs.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.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
at System.Windows.UIElement.OnMouseDownThunk(Object sender, MouseButtonEventArgs e)
at System.Windows.Input.MouseButtonEventArgs.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.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
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)

I have tracked this down to the call to Rebind() on the RowEditEnded.

Note we are trying to use Rebind here instead of just raising PropertyChanged event from component.TotalLength as we are not in control of that library.
Yoan
Telerik team
 answered on 23 Aug 2013
1 answer
110 views
Hi,

I'd like to customize schedule view control so Day view looks like the attached picture. Do you think is possible to reach the desired look?

Thanks.
Rosen Vladimirov
Telerik team
 answered on 23 Aug 2013
2 answers
195 views
I am trying to do MVVM with data binding to GraphSource using a ObservableGraphSourceBase.  When I drop a container from the DiagramToolbox.  How would be able to associate that container with view model item and still be able to undo or redo adding that item to the diagram?
Kent
Top achievements
Rank 1
 answered on 22 Aug 2013
1 answer
319 views
Hello,

I'm wondering how I can let a header do texttrimming?
In the picture below, you can see that my column values are being trimmed, but the header text isn't..

http://imageshack.us/photo/my-images/843/jrsp.png/

Thanks!
Yoan
Telerik team
 answered on 22 Aug 2013
4 answers
355 views
Hi,

how can i add a errorhandling to a RadMaskedTextInput? On LostFocus-Event i check if the Input is ok or not. If the
Input is not ok, i want to clear the RadMaskedTextInput and set the Cursor back in the box.

To clear is no problem:

RadMaskedTextInput.Text = "";

But how to set the Focus?

RadMaskedTextInput.Focus(); does not work.

Thanks Best Regards
Rene
Diego
Top achievements
Rank 1
 answered on 22 Aug 2013
0 answers
87 views

the above code giving the error as "The Resource 'Localized strings ' could't be resolved

<TelerikPopup:GridViewComboBoxColumn.Header>
                                                                <TextBlock Text="{Binding Source={StaticResource localizedStrings}, Path=LabelString.LocalizationResources.UOM, FallbackValue='UOM'}"/>
                                                            </TelerikPopup:GridViewComboBoxColumn.Header>
How to Resolve it


Pranavi
Top achievements
Rank 1
 asked on 22 Aug 2013
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