I have a requirement to override the Minimize function of the radWindow (clicking the Minimize Button on the Title Bar). Instead of the Window Minimizing to the bottom left of the screen I intend to simply reduce the Height of the Window leaving just the Title Bar showing (in its original position). Restoring the Window will again simply set the Height back to its original value to expand the Window….

So, I need to set Handle = true when the SC_MINIMIZE Message is received, this will prevent the Window from minimizing, then i can implement my own code to change the Height of the Window… This is the code so far…

        private void RadWindow_HostCreated(object sender, HostWindowCreatedEventArgs e)

        {

            e.HostWindow.SourceInitialized += HostWindow_SourceInitialized;

        }

        private void HostWindow_SourceInitialized(object sender, EventArgs e)

        {

            var source = PresentationSource.FromVisual((Window)sender) as HwndSource;

            if (source != null) source.AddHook(new HwndSourceHook(HandleMessages));

        }

        private IntPtr HandleMessages(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)

        {

            if (msg == 0x0112 && ((int)wParam & 0xFFF0) == 0xF020)

            {

                handled = true;

            }

            return IntPtr.Zero;

        }

However, while I seem to be catching Windows Messages in the HandleMessages function, it is not setting handled = true; when i click the Windows Minimize Button

Any help would be appreciated…

Hi (QwQ),

I met a problem that "IsReadOnly=true" of GridViewDataColumn doesn't work.

<telerik:GridViewDataColumn Header="IsChecked" DataMemberBinding="{Binding IsChecked}"
                        Style="{DynamicResource GridViewColumnStyle}" IsReadOnly="True">
    <telerik:GridViewDataColumn.CellTemplate>
        <DataTemplate>
            <CheckBox IsChecked="{Binding IsChecked}" Style="{DynamicResource CheckBoxStyle}"/>
        </DataTemplate>
    </telerik:GridViewDataColumn.CellTemplate>
</telerik:GridViewDataColumn>

Hi(=^_^=),

I have set the Style and EditorStyle of GridViewCheckBoxColumn.

Here it is:

<telerik:GridViewCheckBoxColumn Header="IsChecked1" 
DataMemberBinding="{Binding IsChecked}"
Style="{DynamicResource GridViewColumnStyle}" 
EditorStyle="{DynamicResource CheckBoxStyle}">
</telerik:GridViewCheckBoxColumn>

But the CheckBoxStyle only works when it is being edited.

Like this:

So..Which style can i set to change the normal style of checkbox?

Hello,

In my WPF application I want to integrate a page indicator, like everybody knows from mobile devices, to browse/slide through e.g. some images or pages/controls and the dots at the bottom indicating the current position.

I saw that Telerik provides something like that for Xamarin (SlideView: https://docs.telerik.com/devtools/xamarin/controls/slideview/slideview-overview). 

Is there something similar for WPF I just don't see? Or any suggestion how I can realize this easily (e.g. with bit of restyling of another control)? Or maybe is it possible to host Xamarin control in WPF?

Thanks

Hi,

I just upgrade my solution from telerik wpf 2021.1.325.310  to 2021.3.914.45. I performed the wizard upgrade but after restart vs2019, and rebuild of solution I get runtime exceptions like this: 
'The invocation of the constructor on type 'Telerik.Windows.Controls.RadBusyIndicator' that matches the specified binding constraints threw an exception.' Line number '50' and line position '3'.
If I delete RadBusyIndicator:

''The invocation of the constructor on type 'Telerik.Windows.Controls.RadNotifyIcon' that matches the specified binding constraints threw an exception.' Line number '56' and line position '5'.'

And so on...
I restored old version and I'm waiting for help.
Thank you

Luigi

I use diagram each Tab Item.

And I tried save & load diagram.

it worked. but, connection's Source/Target is null when I change the tab.

then I checked DeserializeLink in GraphSource.

'base.DeserializeLink(connection, info)' is not return Source/Target.

Help me,,,

in GraphSource.

Hello Forum!

I have the following method in a RadGridView-behavior which expands all groups in my RadGridView (just like method ExpandAllGroups()):

      private static void onExpandAllCommandBoolChanged( DependencyObject dependencyObject, DependencyPropertyChangedEventArgs dependencyPropertyChangedEventArgs )
      {
         var radGridView = ( (RadGridViewExpandAndCollapseAllGroupingsCommandBehavior) dependencyObject ).AssociatedObject;

         var groups = radGridView?.Items.Groups;
         if( groups == null )
            return;
         foreach( var group in groups )
         {
            radGridView.ExpandGroup( (IGroup)group );
         }

         // easier: ((RadGridViewExpandAndCollapseAllGroupingsCommandBehavior)dependencyObject).AssociatedObject.ExpandAllGroups();
      }

My task is to expand the same RadGridView-groups after a reload of the RadGridView-data that were expanded before the reload.
To accomplish this, i need the IsExpanded-property of the RadGridView-group, but it isn't available in type Group.

Which datatype can I use to get the IsExpanded-property?
I use WPF and MVVM.

Thank you!

Hello, 

I'm new to WPF but have been developing software for more than 22 years (vast majority has been in C#).

I'm looking for information on how to properly format the CardView's CardHeaderTemplate. I'd like to be able to put a line break between two pieces of data:

Table # 5

Guests 3

Following is my xaml:

                <telerik:RadCardView CardLayout="Rows" 
                                     Height="Auto" Width="Auto" 
                                     ItemsSource="{Binding PartyCards}" 
                                     CardHeaderBinding="{Binding Path=.}" 
                                     AutoGenerateDataFieldDescriptors="False" 
                                     IsReadOnly="true">
                    <telerik:RadCardView.CardHeaderTemplate>
                        <DataTemplate>
                            <StackPanel Orientation="Horizontal">
                                <Label Content="Table # " FontWeight="Bold" Foreground="White" />
                                <Label Content="{Binding TableNumber}" FontWeight="Bold" Foreground="White" />
                                <Label Content="Guests " FontWeight="Bold" Foreground="White" />
                                <Label Content="{Binding GuestCount}" FontWeight="Bold" Foreground="White" />
                            </StackPanel>
                        </DataTemplate>
                    </telerik:RadCardView.CardHeaderTemplate>

                    <telerik:RadCardView.DataFieldDescriptors>
                        <telerik:CardDataFieldDescriptor Header="" DataMemberBinding="{Binding OrderItems}" />
                    </telerik:RadCardView.DataFieldDescriptors>
                </telerik:RadCardView>

Much appreciated!!

-Mark

We have some performance problems with a large RadDiagram (in one case, there are 372 shapes and 1200+ links, for instance).

While doing some performance profiling, I notice that a great deal of time is spent in RadDiagramConnectionAutomationPeer.GetItemStatusCore and RadDiagramShapeAutomationPeer.GetItemStatusCore.  Both of these are calling an AutomationXmlSerializer.Serialize method that takes a the vast majority of the time.  This is going on when the diagram is just sitting there with no interaction going on, no changes happening, etc. -- just displaying.

I don't think we've done anything to serialize the diagram intentionally.  For instance, I see there is a RadDiagram.Save() method; we are not calling that anywhere, and I can't find it in any of the call history.  I also don't see any of our calls leading to these GetItemStatusCore calls, so I'm thinking it's being triggered implicitly somehow.

What are we doing that's triggering this serialization?  Is it a critical part of the function of RadDiagram?  Since it's causing performance problems, is there anything we can do about it, please? 

I also don't (think I) see any documentation for these classes or methods online (or, internet searches turn up nothing for them), so I'm not sure how to proceed on my own.

This is with v. 2021.1.325.40.

Thanks!

-David Marshburn

I'm getting an exception when closing panes with no title:

System.ArgumentNullException
  HResult=0x80004003
  Message=RadPane instance cannot be null. Make sure that override of DockingPanesFactory.GetPaneFromItem method returns a valid RadPane instance.
Parameter name: pane
  Source=Telerik.Windows.Controls.Docking
  StackTrace:
   at Telerik.Windows.Controls.Docking.DockingPanesFactory.RemovePane(RadPane pane)
   at Telerik.Windows.Controls.RadDocking.OnPanesSourceCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)

We don't have an override of DockingPanesFactory.GetPaneFromItem so I'm not clear what's going wrong here? Is a pane parameter being passed that's null?

This occurs when we execute 'close all but this pane" type operation.