Questions on UI for WPF Forum

4 answers

846 views

Hello,

I am using the MVVM pattern. I have a GridView on a usercontrol that has the datacontext set to a viewmodel. The viewmodel contains an ObservableCollection of model objects that are bound to the ItemsSource of the GridView. My GridViewDataColumn.Header properties are bound to some properties in the viewmodel and everything works as expected. The Header values are genrated dynamically and dispalyed properly through the binding. When I add a DataMemberBinding to a GridViewDataColumn and bind it to a property from the object collection, I get unexpected Header value. The Header will display the value "SourceName". This only happens when the SourceName property exists on the model object and a successful binding is created for the DataMemberBinding property. If I put in a value such as SourceNameTest, the Header is displayed correctly. Here is a snippet of one of the columns in question. As you can see it is a very simple column definition. Could you please help me understand if there is way to accomplish what I am trying to do.

<telerik:GridViewDataColumn DataMemberBinding="{Binding SourceName}" Header="{Binding SourceObjectHeader}" >
Thanks,

Jason

GridView

answered on 10 Aug 2011

1 answer

150 views

Licensing issue

I have had installed the trial version of your WPF controls and then installed the licensed version but I am still getting the Trial message box.Is there anything I can do in order to get rid of this message box?

Installer and Visual Studio Extensions

answered on 10 Aug 2011

8 answers

148 views

Using EF 4.0 - can add new row *or* sort

I'm using Entity Framework 4.0 and have a "Players" class. Bone-stock, nothing added or changed, just as VS2010 generated it, which means it's an ObjectSet.

If, in my _Loaded event I do this:

CollectionViewSource myCollectionViewSource = (CollectionViewSource)this.Resources["playersViewSource"];
myCollectionViewSource.Source = this.DbContext.Players;

I can click to add a new row, update existing items, etc. I can't click on row headers to sort them, though.

If I do this:

myCollectionViewSource.Source = this.DbContext.Players.ToList();

then I can sort/and add a new row, but dbContext.SaveChanges() doesn't have any effect.

I'm new to both EF and the RadGridView, so I'm not sure what the problem is. I'd like to be able to both update and sort. How do I do this?

Thanks.

GridView

answered on 10 Aug 2011

2 answers

159 views

Pin Functionality

Hello,

I was wondering if the WPF GridView has the same pinning functionality as the WinForms gridview documented here: http://www.telerik.com/help/winforms/gridview-rows-pinned-rows.html

I didn't see anything in the WPF samples and the WinForms code doesn't work for WPF.

Thanks,
Derek

GridView

answered on 09 Aug 2011

6 answers

232 views

[Solved] How to measure the openstreemap by drawing a polyline

Hi Telerik team,

Thanks for the reply. It's working now.

One final question I have right now, Please respond.

Can we measure the openstreemap means you click on some points and it draws a poly line and during that time it shows the length of that polyline in meters / feet.

Please let me know if it possible or not?

If you have some sort of sample code please pass over it.

Thanks for your help.
Vivek,

Map

answered on 09 Aug 2011

2 answers

177 views

[Solved] How to Set EmptySelectionBoxTemplate in code?

I have a RadRibbonComboBox in a RadRibbonTab in a RadRibbonBar. Looks something like this:

<telerik:RadRibbonBar>

<telerik:RadRibbonTab Header="Tab 2" x:Name="Tab2">

<telerik:RadRibbonGroup Header="Select an item">

<StackPanel Orientation="Vertical" Margin="0,5,0,0">

<telerik:RadRibbonComboBox Name="myComboBox" Margin="0,5,0,0" >

<telerik:RadRibbonComboBoxItem Content="New Item..." Selected="NewItem_Selected"></telerik:RadRibbonComboBoxItem>

</telerik:RadRibbonComboBox>

</StackPanel>

</telerik:RadRibbonGroup>

</telerik:RadRibbonTab>

</telerik:RadRibbonBar>

I have defined three different Data Templates in the resources like this:

<UserControl.Resources>

<DataTemplate x:Key="EmptyTemplate1">

<TextBlock FontStyle="Italic" Text="Select a value from the list" />

</DataTemplate>

<DataTemplate x:Key="EmptyTemplate2">

<TextBlock FontStyle="Italic" Text="There are no selections at this time" />

</DataTemplate>

<DataTemplate x:Key="EmptyTemplate3">

<TextBlock FontStyle="Italic" Text="Please complete the first tab before selecting" />

</DataTemplate>

</UserControl.Resources>

I want to use a specific Data Template for the EmptySelectionBoxTemplate depending on various conditions. Therefore, I want to set the EmptySelectionBoxTemplate in code. I have tried setting the template like this:

myComboBox.EmptySelectionBoxTemplate = (DataTemplate)FindResource("EmptyTemplate1");

The resource is found, and appears to be set in the combo box, but the display does not get altered. I also tried invalidating the property and visual state:

myComboBox.InvalidateProperty(RadComboBox.EmptySelectionBoxTemplateProperty);

myComboBox.InvalidateVisual();

Invalidating did not help. The combo box selection is -1, and if I set the EmptySelectionBoxTemplate in XAML, the box displays the message correctly.

What is the correct way to change this template in code?

ComboBox

answered on 09 Aug 2011

1 answer

248 views

SpellCheck not working properly for RichTextBox(Version 2011.1.315.35)

Hi Team Telerik,

RadRichtextBox property IsSpellCheckingEnabled is set to True ,but it is not working properly .All lowercase letters are getting marked as having spellerror and for uppercase letters spellerror is not getting marked.

Code:-

RichTextBox1.IsSpellCheckingEnabled =True
RichTextBox1.Language = Markup.XmlLanguage.GetLanguage(CultureInfo.CurrentCulture.Name)

RichTextBox

answered on 09 Aug 2011

1 answer

169 views

Pinnabe rows

Is there any possibility to pin/unpin rows or columns in the datagridview for WPF? I am highly looking for somehting like that and I thought due to the fact that you have somehting in for WinForms that it is also in for WPF.

I'd really like to know how to pin records in WPF. can you suggest somehting?
Thanks

GridView

answered on 09 Aug 2011

6 answers

130 views

[Solved] Request for a "AddSelection" method

Hi,

I'm creating facility to jump to a specific selection (think of a calendar which has a "Today" button to jump immediately to a specific date). This facility changes both the SelectionStart and SelectionEnd properties in two separate operations, however this causes the SelectionChanged event to be triggered twice, once for each operation. Can an "AddSelection(start, end)" method be included change both properties in one operation and only trigger the SelectionChanged event once? (Similar events could be added for VisiblePeriod and Period). I've based this request on a similar AddRange method for the RadChart control that allows the minimum, maximum and step properties to be changed in one operation.

Kind regards,
Dave.

TimeBar

answered on 09 Aug 2011

1 answer

265 views

Detecting when a RadPane is visible or active?

Hi all, I have Docking with different RadPane in it. Each RadPane have different functionality that spawns a worker thread to get information, I would like to be able to stop the worker thread if the RadPane is not visible.

I cannot seem to find an event that I can attached to watch this behavior. Any suggestions? I tried watching loading, unloading of rad pane but that does not work since switching tabs in the docked state does not trigger these events.

Any suggestions?

Docking

answered on 09 Aug 2011