Questions on UI for WPF Forum

1 answer

152 views

Hello,

ASFIK there is no zoom shortcut in RadScheduleView. As slider seems to be not best solution, I'm trying to implement zoom on CTRL+MouseWheel. But RadScheduleView.MouseWheel event is never invoked.

I've done some research and found the following event handler in ScheduleViewBase

protected override void OnMouseWheel(MouseWheelEventArgs e)

{

e.Handled = true;

double newDelta = SystemParameters.WheelScrollLines * this.VerticalSmallChange;

if (e.Delta > 0)

{

newDelta = -newDelta;

}

double offset = Math.Min(this.ExtentHeight, Math.Max((double) 0.0, (double) (this.VerticalOffset + newDelta)));

this.VerticalOffset = offset;

base.OnMouseWheel(e);

}

MouseWheel event is always handled by control itself.

Is it possible to expose it as done in RadScheduler?

Thanks,
Anatoly

ScheduleView

answered on 23 Nov 2010

0 answers

184 views

RadGrid Cache State

Hello,

I have a need to refresh data in a nested grid and keep any expanded rows, sorting or filtering.

I am using a nested RadGridView. I would like to hold onto the explanded rows state, filter state and sort state of the master and detail grids.

I have been somewhat successful, however I cannot find the correct way to re-apply the expanded items and the detail filters/sorting.

I have tried RadGridView1.ItemContainerGenerator.ContainerFromItem but it always comes back empty. However, the items are populated.

How do I programatically set the row.Isexpanded property using the Items bound to the Itemssource?

How do I re-apply any sorting or filtering to children grids?

Thank you,
Rick

GridView

asked on 22 Nov 2010

6 answers

284 views

Aggregate Function SourceField Path

Hi,



Is it possible to have the aggregate function's source field pointed to a Path?

My data source is generated dynamically so I'm trying to use the Path approach like in DataMemberBinding.



Thanks.





<

telerik:GridViewDataColumn Header="Field 1" Width="120"

DataMemberBinding="{Binding Mode=TwoWay, Path=Columns[1]}" DataFormatString="{}{0:N2}" >

<telerik:GridViewDataColumn.AggregateFunctions>

<telerik:SumFunction Caption="Sum: " SourceField="{Path=Columns[1]}" ResultFormatString="{}{0:N2}"/>

</telerik:GridViewDataColumn.AggregateFunctions>

</telerik:GridViewDataColumn>

GridView

answered on 22 Nov 2010

5 answers

454 views

RadPanelBar and Binding

Hello

I try to use the RadPanelBar with a Binding as ItemSource, but get an unexpected result. Without binding I would use it like this:

    
            <telerik:RadPanelBar> 
        
                <telerik:RadPanelBarItem> 
        
                    <telerik:RadPanelBarItem.Header> 
        
                        <Label Content="Header 1"/> 
        
                    </telerik:RadPanelBarItem.Header> 
        
                    <Label Content="Content 1"/> 
        
                </telerik:RadPanelBarItem> 
        
            </telerik:RadPanelBar>

That is no problem and looks exactly as expected. But as soon as I use it like this:

    
            <telerik:RadPanelBar Name="AttributeSetPanelBar" ItemsSource="{Binding}"> 
        
                <telerik:RadPanelBar.Resources> 
        
                    <DataTemplate DataType="{x:Type wrp:AttributeSet}"> 
        
                        <telerik:RadPanelBarItem> 
        
                            <telerik:RadPanelBarItem.Header> 
        
                                <Label Content="{Binding Name}"/> 
        
                            </telerik:RadPanelBarItem.Header> 
        
                            <Label Content="Content"/> 
        
                        </telerik:RadPanelBarItem> 
        
                    </DataTemplate> 
        
                </telerik:RadPanelBar.Resources> 
        
            </telerik:RadPanelBar>

and set it's DataContext to a List of objects (in this case AttributeSet), it changes its behaviour! Now the header includes the whole content, and the content itself (the secont Label) is also displayd as Header.
Am I doing something wrong, or is this a bug?

Regards
Simon

PanelBar

answered on 22 Nov 2010

8 answers

1.1K+ views

change Datatemplate from code behind

Hello Telerik,

I'm trying to use visual helper to fine and change the textblock in the ContentPresenter in the TileViewItem

RadTileViewItem myRadTileViewItem =(RadTileViewItem)(RadTileView1.ItemContainerGenerator.ContainerFromItem(RadTileView1.Items.CurrentItem));

// Getting the ContentPresenter of RadTileView1

ContentPresenter myContentPresenter = FindVisualChild<ContentPresenter>(RadTileView1);

// Finding textBlock from the DataTemplate that is set on that ContentPresenter

DataTemplate myDataTemplate = myContentPresenter.ContentTemplate;

TextBlock myTextBlock = (TextBlock)myDataTemplate.FindName("Datext", myContentPresenter);

// Do something to the DataTemplate-generated TextBlock

this.Datext.Text = 5;

<DataTemplate x:Key="MyDataTemplate">

<StackPanel>

<TextBlock x:Name="Datext" FontSize="18" Text="{Binding}" />

<TextBox x:Name="Datext1" FontSize="10" Text="5 KillDate Items" />

</StackPanel>

</DataTemplate>

private childItem FindVisualChild<childItem>(DependencyObject obj)

where childItem : DependencyObject

{

for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)

{

DependencyObject child = VisualTreeHelper.GetChild(obj, i);

if (child != null && child is childItem)

return (childItem)child;

else

{

childItem childOfChild = FindVisualChild<childItem>(child);

if (childOfChild != null)

return childOfChild;

}

return null;

}

Any thoughts/

Regards,
Rick

TileView

answered on 22 Nov 2010

1 answer

46 views

System.Web Assembly Error

Following an update to Rad controls for WPF Q3 2010, we've begun to receive the following error: "Could not load file or assembly 'System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=<hex string>' or one of its dependencies. The system cannot find the file specified. / [OK]"

Platform: Windows 7
NET Framework = Microsoft .NET Framework 4 Client Profile

Further investigation has revealed the the error is resolved when ..NET Framework 4.0 Extended is applied. Is this a known byproduct of the Q3 release of RAD for WPF? If so, is there a way to suppress this additional requirement?

Thanks!

David Stickney

General Discussions

answered on 22 Nov 2010

2 answers

133 views

Supporting format YYYYMMDD

Hi!

Is it possible to configure/change the RadDatePicker to support the dateformat YYYYMMDD (no dashes)?

DatePicker

answered on 22 Nov 2010

3 answers

175 views

Binding Group for RadGridView

I have a RadGridView that I would like users to edit as much as they want, but not to save any changes back to the binding object until the user clicks the save button. For textboxes and such I have used binding groups, but this approach does not seem to work for the RadGridView.

What is the best approach for delayed edits for the entire grid?

GridView

answered on 22 Nov 2010

1 answer

65 views

Theming Calendar of DatePicker

I would like to create a custom theme for the calendar of the RadDatePicker. Theming the RadScheduler was easy. But how is this done on the Calendar?

DatePicker

answered on 22 Nov 2010

1 answer

76 views

Show Calendar on MouseDoubleClick

I´d like to know if it is possible to show the calendar on mousedoubleclick event. I thought this was easy to implement, but I didn´t find any method the would solve my problem.

DateTimePicker

answered on 22 Nov 2010