Questions on UI for WPF Forum

4 answers

148 views

Hello, when selecting a cell, the row is highlighted. I would like to have the cells on selection by column, not by row. I'm using dynamic columns, so I'm not sure how to do this. I tried e.Cell.Background = Brushes.Red; at the cell level but the colors didn't change.

Thanks,
Scott

GridView

answered on 18 Nov 2013

1 answer

111 views

Silverlight Richtextbox unicode issue

Hi I am currently evaluating telerik silverlight controls. In richtextbox if try to type using google input tools for unicode inputs such as hindi, marathi I am facing cursor alignment issue. When i type one word its fine but next word comes to left of first word instead it should be at right of first word.

RichTextBox

answered on 18 Nov 2013

1 answer

51 views

Current Resource from SelectedSlot

Hallo,
I add a custom context menu to schedule view.
When I click over a slot (empty slot or not) I need retrieve current resource where the slot is in.
How can I do that?

Thanks

ScheduleView

answered on 18 Nov 2013

1 answer

219 views

Load VirtualQueryableCollectionView items based on ID instead of index

We are using the RadGridView with a VirtualQueryableCollectionView as Itemsource using WPF and EF.
This works great for paging and scrolling, however we can't figure out how to deal with the following situation:

- We sort the grid by a property, name for instance.
- Then, outside of the grid, the name property is altered
- Our viewmodel receives a message that the item has changed

What we want to do now, is to refresh the grid, with the current item still selected.
However, since the name has changed, we don't know the index that has to be queried to get the item with the id of the changed item.

So the question is: knowing the ID of an entity, how can you make VirtualQueryableCollectionView load the item with that ID into the grid?The same situation arises when we want to select a entity (with known id) that has been newly created outside of the viewmodel.

We use the following VirtualQueryableCollectionViewHelper to create the set the VirtualQueryableCollecitonView.

QueryGenerator(QueryableXenoxContext) returns an EntityQuery

public class VirtualQueryableCollectionViewHelper<T> where T : Entity

{

public IEventAggregator EventAggregator { get; set; }

public

VirtualQueryableCollectionViewHelper(Func<QueryableXenoxContext, EntityQuery<T>> queryGenerator, queryableXenoxContext queryableXenoxContext, XenoxGridView gridView)

{

EventAggregator = ClientIocContainer.Instance.GetExportedValue<IEventAggregator>();

QueryGenerator = queryGenerator;

QueryableXenoxContext = queryableXenoxContext;

GridviewControl = gridView;

DoNothing = i => { };

View = new VirtualQueryableCollectionView<T>

{

LoadSize = 30,

VirtualItemCount = 100

};

View.ItemsLoading += (sender, args) => LoadInternal(args.StartIndex, args.ItemCount, DoNothing);

View.FilterDescriptors.CollectionChanged += (sender, args) => LoadInternal(0, View.LoadSize, DoNothing);

View.FilterDescriptors.ItemChanged += (sender, args) => LoadInternal(0, View.LoadSize, DoNothing);

View.SortDescriptors.CollectionChanged += (sender, args) => LoadInternal(0, View.LoadSize, DoNothing);

if (gridView == null)

{

ScrollIndexIntoView = DoNothing;

}

else

{

ScrollIndexIntoView = i => gridView.ScrollIndexIntoCenterOfView(i);

}

public void Load(int currentIndex, int pageSize)

{

LoadInternal(currentIndex, pageSize, ScrollIndexIntoView);

}

public void Refresh(bool scrollToIndex = false, int currentIndex = 0)

{

var postLoadAction = scrollToIndex ? ScrollIndexIntoView : DoNothing;

LoadInternal(currentIndex, View.LoadSize, postLoadAction);

}

public IEnumerable<T> GetAllCollectionItems()

{

return QueryableXenoxContext.Load(QueryGenerator(QueryableXenoxContext)).Entities;

}

private void LoadInternal(int currentIndex, int pageSize, Action<int> onLoaded)

{

if (currentIndex < 0) currentIndex = 0;

//also load content above current item

pageSize = pageSize*2;

var loadStartIndex = currentIndex - pageSize / 2 < 0 ? 0 : currentIndex - pageSize / 2;

var entityQuery =

QueryGenerator(QueryableXenoxContext)

.Sort(View.SortDescriptors)

.Where(View.FilterDescriptors)

.Skip(loadStartIndex)

.Take(pageSize);

entityQuery.IncludeTotalCount = true;

try

{

QueryableXenoxContext.Load(entityQuery, LoadBehavior.RefreshCurrent, lo => {

if (lo.TotalEntityCount != -1 && lo.TotalEntityCount != View.VirtualItemCount) {

View.VirtualItemCount = lo.TotalEntityCount;

}

View.Load(loadStartIndex, lo.Entities);

onLoaded(currentIndex);

}, null);

}

catch (InvalidOperationException)

{

EventAggregator.Publish(new ErrorReportedEvent("Error loading items. Possible cause: too many items selected"));

}

Data Virtualization

answered on 18 Nov 2013

6 answers

199 views

GridViewRow Background within BusyIndicator

Hi,

i got an error while the busy indicator is busy over the radtreelistview gridviewrow background. What can i do to remove the gray area?

Please have a look on my attached file radtreelistview_busyindicator.png.

Thanks for your help.

TreeListView

answered on 18 Nov 2013

5 answers

143 views

Row double click

Hello. I have a problem with row double click. I use next code:

protected override void OnMouseDoubleClick(MouseButtonEventArgs e)

{

var element = InputHitTest(e.GetPosition(GetRowForItem(SelectedItem)));

if (element != null)

{

if (DoubleClickCommand != null && DoubleClickCommand.CanExecute(DoubleClickCommandParameter))

DoubleClickCommand.Execute(DoubleClickCommandParameter);

}

base.OnMouseDoubleClick(e);

}

And some times InputHitTest return null. I can see that it happens when I scroll (Horizontal) to the right to the columns which aren't located in visible area. But if I resize gridView and some new columns will be located in visible area, InputHitTest will return right value. (My visual tree = RadDocumentPane -> ScrollViewer -> Canvas -> ContentControl -> RadGridView) Thanks.

GridView

answered on 18 Nov 2013

5 answers

382 views

FocusManager and RadWindow

Hello,
I have a RadWindow with just a label and a textbox :

    
            <telerik:RadWindow x:Class="TestWpf.MainWindow"    
        
                    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"    
        
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"    
        
                    xmlns:telerik="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation"    
        
                    Header="Test" Width="400" Height="200"    
        
                    FocusManager.FocusedElement="{Binding ElementName=tbxUser}">     
        
                <Grid>    
        
                    <Label Content="User : " Height="28" Name="lblUser" />    
        
                    <TextBox Height="23" Name="tbxUser" Width="120"/>     
        
                </Grid>    
        
            </telerik:RadWindow>

When I open the window I would have the focus in the textbox. So I add the FocusManager.FocusedElement attribute to the RadWindow but it doesn't work.
If I transform RadWindow to standard Window it works.
Is there another way to do this ?

Thanks in advance for your answer.

Window

answered on 17 Nov 2013

9 answers

222 views

Rotating RadDiagramShape inside of RadDiagramContainer

Is there a way to rotate child shapes inside of a rotating container? The idea is to keep the children of the container laid out exactly the same as the container is rotated. An additional complication is that I need to be able to select the child shapes.

This second requirement is tricky because it essentially eliminates the easy solutions -- i.e. Ellipses/Rects inside the container instead of RadDiagramShapes.

Right now, my idea is to hook the OnRotationAngleChanged method in the RadDiagramContainer and then iterate through the children and apply a RotateTransform to the children.

protected override void OnRotationAngleChanged(double newValue, double oldValue)

{

base.OnRotationAngleChanged(newValue, oldValue);

List<RadDiagramShape> childrenList = Children.OfType<RadDiagramShape>().ToList();

// get rotation center

double centerX = (ActualWidth / 2);

double centerY = (ActualHeight / 2);

foreach (RadDiagramShape item in childrenList)

{

RotateTransform transform = new RotateTransform(newValue, centerX, centerY);

item.LayoutTransform = transform;

}

The idea here is that I would use the container center as the rotation origin and just have the children rotate around that point. That didn't work - in fact, it seems any values supplied as centerX/centerY produce the same behavior, which makes me think that the container might be doing some coercing of the child during layout.

Am I making this way too hard?

Diagram

answered on 15 Nov 2013

3 answers

180 views

Dock floating panel to corner of main document

We have a scenario where we would like to float panels over the top of a background map. When dragged to a corner of the map we would like the panel to dock to the corner whilst remaining on top of the map. Subsequent panels would then dock (or stack) to the sides of this panel, whilst providing resize behaviour. Can this be achieved with radDocking control?

Docking

answered on 15 Nov 2013

3 answers

241 views

Office2013 theme and TextBlock

Hello,
when using the Office2013 theme the text in a TextBlock is smaller as that for a RadButton or a CheckBox.
Is it by design or is it a bug?
Patrick

General Discussions

answered on 15 Nov 2013