Questions on UI for WPF Forum

1 answer

250 views

How to set focus on a ComboBox cell and open the combo box.

Hi..
I have a button that adds a new row to the grid. I need to set focus to the new row and open the first cell - which is combo box and set focus.
I have tried the following but it does not work.. any ideas? thanks

this.gridPO_det.ScrollIntoViewAsync(new_det

, (f) =>

{

GridViewRow row = f as GridViewRow;

if (row != null)

{

GridViewCell cell = row.Cells[0] as GridViewCell;

cell.BeginEdit();

Dispatcher.BeginInvoke(

new Action(() =>

{

((

RadComboBox)cell.GetEditingElement()).IsDropDownOpen = true;

}));

}

});

GridView

answered on 26 Oct 2010

1 answer

166 views

Assigning RadContextMenu to Custom Templated Control

I have several custom WPF controls whose visual representations are defined by a XAML template. My goal is to define a RadContextMenu in a ResourceDictionary and then, in code, assign it to be the context menu for my custom controls, similary to the following:

ResourceDictionary resourceDictionary = new ResourceDictionary();

resourceDictionary.Source = new Uri(

"MyLibrary;component/Resources/Resources.xaml", UriKind.Relative);

Grid mainGrid = Template.FindName("mainGrid", this) as Grid;

if(mainGrid != null)

{

RadContextMenu.SetContextMenu(this, (RadContextMenu)resourceDictionary["DefaultControlContextMenu"]);

}

At runtime, the RadContextMenu gets assigned correctly, but whenever I right-click on my custom control the following exception is thrown:

System.InvalidOperationException: Cannot perform action because the specified Storyboard was not applied to this object for interactive control.

I've noticed that others have gotten a similar exception with the RadTreeView and RadTransitionControl, and I need to know what to do for a workaround on this. Is the problem related to the fact that I am using a control template?

Thanks,

Greg

ContextMenu

answered on 26 Oct 2010

1 answer

81 views

confirmation prompt when editing cell

I need to show a Confirm prompt one a user is finished editing a cell.

Here is my current CellEditEnded eventhandler:

private void gvAccounts_CellEditEnded(object sender, GridViewCellEditEndedEventArgs e)

{

if (e.EditAction == Telerik.Windows.Controls.GridView.GridViewEditAction.Cancel)

return;

oldNickname = e.OldData.ToString();

newNickname = e.NewData.ToString();

// nothing has changed

if (oldNickname == newNickname)

return;

RadWindow.Confirm("Are you sure you want to change this nickname to " + newNickname + "?", this.ChangeNickname);

}

oldNickname and newNickname are global variables so I can keep up with the new/old values.

however, when any button on the prompt is clicked (or anywhere on the screen is clicked) another CellEditEnded event is fired but e.OldData is the same as e.NewData which overwrites my global variables.

I don't understand why the second event is firing.

GridView

answered on 26 Oct 2010

1 answer

123 views

Series Connectors not getting disabled

Hi,

I am drawing a Rad Chart with multiple line series. And although while creating a series I explicitly write code to disable the connector:

DataSeries lineSeries = new DataSeries();
SplineSeriesDefinition lineDataSeries = new SplineSeriesDefinition();
LabelSettings settings = new LabelSettings();
settings.ShowConnectors = false;
settings.Distance = 10;
lineDataSeries.LabelSettings = settings;
.
.
.

Later I assign this series to the RadChart's default view. But still it doesn't disable the labels.

LineChartTrancheResults.DefaultView.ChartArea.DataSeries.Add(lineSeries )

Do I need to do something else?

Thanks,
Farhan

Chart

answered on 26 Oct 2010

5 answers

187 views

Working with British Postcodes

Hi Telerik

I have been looking at your trial program specifically using the Charting gauge's and the map

one thing im struggling to figure out is how to map British postcodes as points on the map.

do you know of any reading or have anything provided to see how to map these,

if i can get these working i may be able to swing my boss into buying the controls for our team

JAke

Map

answered on 25 Oct 2010

3 answers

187 views

Binding SortDescriptors

I'm using the MVVM pattern for my application.

Is it possible to bind the SortDescriptors collection of a RadGridView to a list in my viewmodel, and if so how do I do that?

Creating a property of type SortDescriptionCollection in my viewmodel is easy, but I don't know how to bind the gridview to that.

Thanks // David

GridView

answered on 25 Oct 2010

9 answers

187 views

Zoom doesn't work with multiple series

Hi,

When I create one line series, the zoom and scroll work fine.
However, when I add more line series and try to zoom in, the series behave weird. Parts of the lines disappear and they don't actaully look like they're zoomed in.

Is there a limitation to implementing zoom on only one series? Or am I doing something wrong?

Thanks in advance.

Chart

answered on 25 Oct 2010

2 answers

132 views

Carousel path

I want the images to traverse in a liner path, like an image gallery.
How to define the path?

Carousel

answered on 25 Oct 2010

24 answers

467 views

Hierarchical Data Grid

Hello, it's been hours since I've tried and searched for any samples that implements hierarchical data using Linq to SQL. It says in your feature product that it automatically detects hierarchy relationship. Could you please provide a tutorial on how to implement or bind a datacontext to the datatemplate of my hierarchychildtemplate?

And, i currenty coded

void MainWindow_Loaded(object sender, RoutedEventArgs e)

{

m_dcData = new DataAccessDataContext();

m_dcData.Log = Console.Out;

rgvData.ItemsSource = m_dcData.Orders;

}

And I tried to commenting out rgvData.ItemsSource = m_dcData.Orders and tried Binding the Linq to SQL class to xaml but I failed. How do I bind a Linq to SQL Class in xaml file so that in my second hierarchical data grid it shows the table that is related to the parent node?

<Grid>

<Border telerikQuickStart:ThemeAwareBackgroundBehavior.IsEnabled="True" />

<telerik:RadGridView x:Name="rgvData" CanUserFreezeColumns="False" GridLinesVisibility="Horizontal" ItemsSource="" IsReadOnly="True" AutoGenerateColumns="False">

<telerik:RadGridView.ChildTableDefinitions>

<telerik:GridViewTableDefinition />

</telerik:RadGridView.ChildTableDefinitions>

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding OrderDate}" Header="Order Date" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding EmployeeID}" Header="Employee" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding Freight}" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding ShipCountry}" Header="Ship Country" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding ShipCity}" Header="Ship City" />

</telerik:RadGridView.Columns>

<telerik:RadGridView.HierarchyChildTemplate>

<DataTemplate>

<telerik:RadGridView x:Name="RadGridView1" CanUserFreezeColumns="False" AutoGenerateColumns="False" ShowGroupPanel="False" IsReadOnly="True">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding CustomerID}" Header="Customer ID" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding Address}" Header="Address" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding City}" Header="City" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding Country}" Header="Country" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

</DataTemplate>

</telerik:RadGridView.HierarchyChildTemplate>

</telerik:RadGridView>

</Grid>

Thanks!

GridView

answered on 25 Oct 2010

5 answers

114 views

Gaps in Dates on AxisX

I have time series data that has gaps on holidays and weekends that must be omitted from the charts. I am fine indexing the dates, that actually works good for me. What I need to do is replace the index that is present on the X axis with the date it represents. I have not found how to do this on the WPF charting controls.

Thanks!

Chart

answered on 25 Oct 2010