Questions on UI for WPF Forum

2 answers

168 views

[Solved] RadScheduleView - Drag from ListBox

Hi, I’m having trouble implementing drag & drop of custom appointments into RadScheduleView and would be thankful if anyone could point me in the right direction.

I have a ListBox (standard WPF} which contains some items (files to be played). User can drag these items and place them onto RadSchedule (play time). I figured out how to enable dragging and transform the data into Appointment. I can see the created item when it’s being dragged over schedule view, but when I release the mouse /Drop/ nothing happens.

Item is not added to bound Appointments collection, nor is any *Drop event being raised. I should note there is a “Forbidden” mouse cursor icon when dragging.

When I drag & resize appointments, that are already present in collection, everything works as expected.

I was even able to reproduce it with this simplified example:

public class MainWindowViewModel

{

public MainWindowViewModel()

{

appointments.Add(

new Appointment()

{

Start = DateTime.Now,

End = DateTime.Now.AddHours(1),

Subject = "Test"

});

}

//ItemsSource for listbox

private ObservableCollection<string> strings = new ObservableCollection<string>() { "First", "Second", "Third" };

public ObservableCollection<string> Strings

{

get { return strings; }

set { strings = value; }

}

//ItemsSource for RadSceduleView

private ObservableCollection<Appointment> appointments = new ObservableCollection<Appointment>();

public ObservableCollection<Appointment> Appointments

{

get { return appointments; }

set { appointments = value; }

}

Behavior to transform dragged string into appointment collection:

public class DropBehavior : ScheduleViewDragDropBehavior

{

public override IEnumerable<IOccurrence> ConvertDraggedData(object data)

{

if (Telerik.Windows.DragDrop.Behaviors.DataObjectHelper.GetDataPresent(data, typeof(ListBoxItem), false))

{

var lbItem = Telerik.Windows.DragDrop.Behaviors.DataObjectHelper.GetData(data, typeof(ListBoxItem), false) as ListBoxItem;

return new Appointment[] {

new Appointment() { Subject = (string)lbItem.DataContext }

};

return base.ConvertDraggedData(data);

}

And final XAML:

<Window x:Class="ScheduleViewTest.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

xmlns:local="clr-namespace:ScheduleViewTest"

Title="MainWindow" Width="640" Height="480">

<Window.DataContext>

<local:MainWindowViewModel/>

</Window.DataContext>

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition/>

<ColumnDefinition Width="15"/>

<ColumnDefinition Width="3*"/>

</Grid.ColumnDefinitions>

<ListBox ItemsSource="{Binding Strings}">

<ListBox.ItemContainerStyle>

<Style TargetType="ListBoxItem">

<Setter Property="telerik:DragDropManager.AllowCapturedDrag" Value="True"/>

</Style>

</ListBox.ItemContainerStyle>

</ListBox>

<telerik:RadScheduleView x:Name="scheduler" Grid.Column="2" AllowDrop="True"

AppointmentsSource="{Binding Appointments}">

<telerik:RadScheduleView.ViewDefinitions>

<telerik:DayViewDefinition/>

<telerik:MonthViewDefinition/>

</telerik:RadScheduleView.ViewDefinitions>

<telerik:RadScheduleView.DragDropBehavior>

<local:DropBehavior/>

</telerik:RadScheduleView.DragDropBehavior>

</telerik:RadScheduleView>

</Grid>

</Window>

As for version I'm using "2013.2.611.45" and preferably would like to avoid updating (legacy app)

Thanks for help and suggestions in advance.

Matej

ScheduleView

answered on 08 Sep 2015

10 answers

733 views

To open calendar on focus of DateTimePicker

Is there any way To open calendar on focus of DateTimePicker.Also i want to hide the logo inside that control.

DateTimePicker

answered on 08 Sep 2015

4 answers

583 views

[Solved] Menu Alignment Problem

Sir,
I have created menu with sub menu.But while i click on menu,the sub menu is opening just right of that menu.I want to open below and sub menu letter alignment should middle.If you make template Grid Horizontal Alignment="left",then it is opening just below it properly but letter alignment becoming left.I want letter alignment should be middle.Here i have attached my sample project link .If there is way to solve this,please help me.

https://drive.google.com/a/aisofttech.com/file/d/0Bz9Sv7mmLtkeeFBGTXB1OFVNTnM/view?usp=sharing

Menu

answered on 08 Sep 2015

1 answer

118 views

[Solved] NullReferenceException resizing a ContainerShape

Hi, I'm trying to use ContainerShapes in my application, but I always get a NullReferenceException when I resize a ContainerShapes.

I've not been able to reproduce the issue in other applications so I'm quite sure it's something on my side, but the stacktrace contains only calls to Telerik code so I'm stuck trying to figure out what's wrong... Can you provide me some hints?

I'm on .NET framework 4.0, Telerik UI for WPF 2015.2.728.40.

Here is the stack trace of the exception:

at Telerik.Windows.Diagrams.Core.ManipulationTool.<>c__DisplayClass15.<>c__DisplayClass17.<CreateAsyncCommand>b__9(Object state)

at Telerik.Windows.Diagrams.Core.UndoableDelegateCommand.Execute(Object state)

at Telerik.Windows.Diagrams.Core.AsyncStateCommand.Execute(Object state)

at Telerik.Windows.Diagrams.Core.AsyncStateCommand.Complete(Boolean commit, Object state)

at Telerik.Windows.Diagrams.Core.CompositeAsyncStateCommand.Complete(Boolean commit, Object state)

at Telerik.Windows.Diagrams.Core.ManipulationTool.MouseUp(PointerArgs e)

at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate)

at Telerik.Windows.Diagrams.Core.ToolService.MouseUp(PointerArgs e)

at Telerik.Windows.Controls.RadDiagram.OnMouseLeftButtonUp(MouseButtonEventArgs e)

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.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)

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.Input.InputManager.ProcessStagingArea()

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 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)

at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)

at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)

at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)

at System.Windows.Application.RunDispatcher(Object ignore)

at System.Windows.Application.RunInternal(Window window)

at MyApplication.App.Main() in D:\git\dfm-designer\src\MyApplication\obj\x86\Debug\App.g.cs:line 0

Many thanks!

Diagram

answered on 08 Sep 2015

1 answer

170 views

Orthogonal line

Hello, I'm HeeJun.

I wonder one thing.

It's about 'Line' object in 'RadDiagram' control.

But, I can't draw beeline. ( straight, perpendicular etc... , angle 90' )

Currently, I'm using the object as connection between two rectangle.

I try correction it, but position is incorrect in 'RadDiagram' control.

When it can be. Or what should I do?

Thank you.

Diagram

answered on 08 Sep 2015

5 answers

166 views

Appointments is not saved

Hi,

i'm a newbie in c# or telerik. i'm using the RadScheduleView and try to edit the appointment by double-clicking time and the appointment dialog is appear, after i click OK the new appointment is now appear in UI. But after i close the app and run it again, the schedule is empty. why?

what is the best way to save my appointment?

ScheduleView

answered on 08 Sep 2015

1 answer

302 views

Using a WMS server as a tiled source

I would like to treat a normal WMS server as a tiled source. I saw some sample using a CustomMapProvider, but I also see there is a WmsTiledProvider. Is that the class I should use, or should I use something like this: http://stackoverflow.com/questions/9769581/telerik-map-wms

To complicate matters, the WMS service uses maps in a Swedish meter based projection, EPSG:3006

Any help, preferably with sample, is appreciated!

/Magnus

Map

answered on 08 Sep 2015

3 answers

203 views

Set levels in grid to readonly

Hi,
Is it possible to set some levels in the ganttview grid to readonly?
If we take the sample "Import from MS Project" as an example and says that we want OutlineLevel 1,2,3 to be readonly and OutlineLevel 4 as editabled. How do i do that?

Only thing that i have tested so far is to have a boolean property in my custom tasks class and then try to bind it to the control for the specific level:

<telerik:ColumnDefinition MemberBinding="{Binding End_str}" Header="End" ColumnWidth="80">

<telerik:ColumnDefinition.CellEditTemplate>

<DataTemplate>

<telerik:RadDatePicker

SelectedValue="{Binding End,Mode=TwoWay}"

IsReadOnly="{Binding isLevelReadOnly}" />

</DataTemplate>

</telerik:ColumnDefinition.CellEditTemplate>

</telerik:ColumnDefinition>

GanttView

answered on 07 Sep 2015

1 answer

420 views

Garbage Collector and memory problem

Hi everyone,

I am having troubles with the memory. I am developing a usercontrol in WPF to put it in a WinCC (Siemens) application. WinCC accepts WPF controls to be putted in its forms.

When I load my control in one of its pictures (they call pictures to any of its instances) my control gets load correctly. But when I go to another pic and come back to the pic of my control, it isn't load correctly the telerik controls.

I have tried to put every telerik control equal null, and remove them from their parents. it isn't work:

gridGanttView.Children.Remove(ganttView);
ganttView = null;
gridChart.Children.Remove(radCartesianChart);
radCartesianChart = null;
System.GC.Collect();
//System.GC.WaitForFullGCComplete(); (Any of this two works)
System.GC.WaitForPendingFinalizers();

I have seen there are people having the same problem like here: LINK

Any Solution? How can I step by step delete every control inside of RadGanttView and RadCartesianChart (or another ones)??

Thanks.

General Discussions

answered on 07 Sep 2015

7 answers

438 views

[Solved] StackedBar chart, with mutliple dataseries

Hi, I'm not sure if this is possible but here is my scenario:

I'm using the StackedBar series and they work fine, but sometimes I will need to compare similar data and would need two series per datapoint on the X axis for this, and I have to do this in codebehind. In other words like a normal chart with multiple dataseries but with stacked bar chart.

Are there any examples for this ?

Best regards
Kristján.

Chart

answered on 07 Sep 2015