Questions on UI for WPF Forum

7 answers

130 views

Drag and Drop in MVVM was broken when I upgraded contols

I have an MVVM project with Several RadGridViews inside of a RadTabControl and a RadTabControl containing Listboxes which are defined in an datatemplate.
I had Drag and Drop working fine when using version 2011.2.712.40
However, when I upgraded to the current release the drag and drop functionality does not work.

I found the following thread (see below) and downloaded the last example contained within, sure enough it has the same problem...
if you run the example with the version contained in the lib folder Drag and Drop works fine, then if you upgrade the controls to the current version, Drag and Drop no longer functions.

http://www.telerik.com/community/forums/wpf/draganddrop/drag-drop-related-problem-in-mvvm.aspx

What has changed that would impact Drag and Drop, and how can I correct it?

DragAndDrop

answered on 27 Mar 2012

3 answers

564 views

[Solved] How to collapse RadGridView RowDetailsTemplate

I currently have a RadGridView with a RowDetailsTemplate that expands when a row is selected by using RowDetailsVisibilityMode="VisibleWhenSelected". When I click on another row, the previously selected row collapses and the new row expands like I want. However, how do I make the selected row collapse when I click on the selected row a second time instead of clicking on a different row? I'm basically trying to get back to where all rows are collapsed. I am not using the '+' button control so it will have to respond to a click anywhere on the selected row. Thanks.

GridView

answered on 27 Mar 2012

4 answers

282 views

[Solved] Does RadDiagram GraphSource property support multiple parents for single node ?

Hi all !

I'm having a closer look to the new RadDiagram component (and Q2 Roadmap) and I was wondering if the GraphSource property was (or will be) supporting nodes with multiple parents or should this achieved manually ?
I've attached a sample diagram to give a better view of what I would like to achieve.
Many thanks for your help !
TheFlo

Diagram

answered on 27 Mar 2012

1 answer

157 views

[Solved] Drag & Drop Effects

Hello,

I'm evaluating the TreeView of "RadControls for WPF Q3 2011 SP1" on Windows 7.
I'm using the version 2011.3.1220.40 of Telerik.Windows.Controls.Navigation.

I want to use the drag and drop capabilities of the TreeView.
But it seems that the property Effects of the DragDropEventArgs object is always null.

public TelerikTreeview()

{

InitializeComponent();

RadDragAndDropManager.AddDropQueryHandler(m_cellTreeView, new EventHandler<DragDropQueryEventArgs>(OnDropQuery));

}

private void OnDropQuery(object sender, DragDropQueryEventArgs e)

{

System.Diagnostics.Debug.WriteLine(e.Options.Effects);

}

How do you perform a copy or move operation with your drag & drop ?

Best regards.

TreeView

answered on 27 Mar 2012

3 answers

116 views

Attaching Appointments to ResourceType

I have an ObservableCollection that currently only has one ResourceType in it: Provider. I have 3 Providers in that ResourceType. I have a collection of Appointments that I have attached to the AppointmentSource. When I did not have any ResourceType attached the appointments would appear in the scheduler just fine. I have added the ResourceType and they are displaying correctly, but the appointments are not showing. My collection of appointments is correctly populating still. I have tried attaching the specific Provider I need to the Appointment's Resource, but I still cannot get them to show. I am lost and would love any help that could be given.

ScheduleView

answered on 27 Mar 2012

1 answer

209 views

Error in InvertedBooleanConverter

I noticed in my application that InvertedBooleanConverter (in the ScheduleView dll) was not working correctly for the convert back operation. I looked at it in JustDecompile and it is incorrect.

The InvertedBooleanConverter in Telerik.Windows.Controls.dll is correct.

Why are there multiple versions?

General Discussions

answered on 27 Mar 2012

2 answers

522 views

Changing Zoom from Code

I am using the ChartView control, and would like to be able to change the Zoom from code.
I have tried two things.

1. Set Zoom property directly from code.
i.e. Chart.Zoom = new Size(1,1);

2. Bind to a Zoom property on my view model, and set that property.

i.e. XAML gets

<telerik:RadCartesianChart Name="Chart" Zoom="{Binding Path=Zoom, Mode=TwoWay}">

And code gets
ViewModel.Zoom = new Size(1,1);

Either way, the view is not refreshed correctly. However, on a re-size operation, it becomes OK again.

Is this a known problem, or is there something else I need to do?

Thanks
Craig Littlewood

ChartView

answered on 27 Mar 2012

3 answers

115 views

[Solved] GridViewCheckBoxColumn always initially unchecked - what am I doing wrong?

Hi telerik,

I have the following rather simple use of the GridViewCheckBoxColumn -- and the grid shows up with no checkmarks what-so-ever.

Can you see what I'm doing wrong?

I can see (by breakpoint) that the row data model is queried for relevant value (so binding should be correct) and that the value in all cases is True (so the underlying value is as I expect).

Any clues?

Thanks,

Anders, Denmark

Grid



        <Controls:RadGridView x:Name="grid" 

                              AutoGenerateColumns="False" 

                              ItemsSource="{Binding Items}" 

                              Height="329" 

                              ScrollViewer.HorizontalScrollBarVisibility="Auto" 

                              ScrollViewer.VerticalScrollBarVisibility="Auto"

                              ShowGroupPanel="False" 

                              VerticalAlignment="Top" 

                              IsFilteringAllowed="False" 

                              >

            <Controls:RadGridView.Columns>

                <Controls:GridViewCheckBoxColumn DataMemberBinding="{Binding IsChecked}" IsThreeState="False" Initialized="GridViewCheckBoxColumn_Initialized" />

            </Controls:RadGridView.Columns>

        </Controls:RadGridView>

"Items"

ObservableCollection<ICheckableViewModel> Items { get; set; }

Row data item



    public class CheckableStringViewModel : ICheckableViewModel

    {

        public CheckableStringViewModel(bool isChecked, string displayName, string identity, bool isReadOnly)

        {

            IsChecked = isChecked;

            DisplayName = displayName;

            Identity = identity;

            IsReadOnly = isReadOnly;

        }



        public bool IsReadOnly { get; private set; }

        public string DisplayName { get; private set; }

        public string Identity { get; private set; }

        private bool _isChecked;

        public bool IsChecked

        {

            get { return _isChecked; }

            set { _isChecked = value; }

        }

    }

GridView

answered on 27 Mar 2012

1 answer

73 views

Change Mouse Key for Zoom selection

The "ChartPanAndZoomBehaviour" facility allows an area to be selected using the LeftMouseButton. Is it possible to change this to the RightMouseButton? If not, is it possible to add a custom facility?

Regards
Craig

ChartView

answered on 27 Mar 2012

2 answers

143 views

Group expands automatically

Hello everyone,

I am using Version 2011.3.1116.40 of GridView for WPF, if the Gridview is grouped I am saving the open groups in a list.
Everytime the user expands or collapses a group I add or remove the IGroup Element in the list.
After a refresh of the DatasourceProvider I expand all the groups which are in my list, but then if I scroll down the list the group with the first element in the list (datasource) is also expanded (GroupRowIsExpandedChanged event fires). It seems that after an refresh the currentscellinfo points to the first element and then if i scroll over the collapsed group where this element is included the group expands.
Do you have any ideas?

regards
Thomas

GridView

answered on 27 Mar 2012