Questions on UI for WPF Forum

3 answers

167 views

I was happily using the wpf beta 1 and developing a project prototype. When the beta 2 was released I uninstalled beta 1 and installed beta 2 with the samples. Now when I try to drag a radgridview or gridviewdatacontrol onto the design surface in vs 2008 I get an "object reference not set to an instance of an object" error message.
I'm also getting error messages when i try to run the samples the error messages are
An error has occurred wide establishing a comection to the server. when cornectting to
sQL Server 2005, this failure may be caused by the Fact that under the default setttings
sQL sever does allow remote connections. (provider: Named Pipes Provider, error:
40 - Could not open a comection to SQL Server)

and it appears it is trying to access a non existent instance of SQLExpress. Can anyone help with these issues?
Thanks for any assistance

General Discussions

answered on 21 Jul 2008

1 answer

110 views

WPF Grid Features Question

Good day,

I would like to know if the WPF grid control will support these features in its first release:

1- Working in a totally unbound mode (ie: AddRows, AddColumns, SetValue (row, column), etc).

2- Support joining cells to make up a seamless "bigger cell" (for example, to make multiple columns spawning headers, etc). (ex: http://cid-9eeb57eb098c0598.skydrive.live.com/self.aspx/Images/JoinedCells.JPG)

3- Locking rows and columns for scrolling.

Thank-you :)

General Discussions

answered on 17 Jul 2008

4 answers

126 views

[Solved] Accessing controltemplate in field

Hi,

I have a controltemplate on a column.

    
            <ControlTemplate x:Key="ComboBoxColumnTemplateReportService" TargetType="{x:Type Telerik:GridViewCell}">  
        
                        <StackPanel Orientation="Horizontal">  
        
                                <ComboBox Width="150" Height="Auto" VerticalAlignment="Center" Margin="0,0,0,0" x:Name="dtcReportService" DataContext="{StaticResource objectDataProviderReportServices}" ItemsSource="{Binding}" DisplayMemberPath="Name"  /> 
        
                                <ComboBox Width="150" Height="Auto" VerticalAlignment="Center" Margin="8,0,0,0" x:Name="dtcPrinter" DataContext="{Binding Path=SelectedItem.Printers, ElementName=dtcReportService, Mode=Default}" ItemsSource="{Binding}" DisplayMemberPath="Name" /> 
        
                                <ComboBox Width="150" Height="Auto" VerticalAlignment="Center" Margin="8,0,0,0" x:Name="dtcPrinterTray" DataContext="{Binding Path=SelectedItem.PrinterTrays, ElementName=dtcPrinter, Mode=Default}" ItemsSource="{Binding}" DisplayMemberPath="Description" /> 
        
                        </StackPanel> 
        
                    </ControlTemplate>

Now i want to access the template while looping my rows so i can get the selected values from my comboboxes (per row).

How can i do this?

Regards

General Discussions

answered on 15 Jul 2008

2 answers

108 views

RadCoursel: databinding to a textbox in a CarouselItems

The ItemSource of my RadCarousel is a datatable (which is capable of databinding according to MS). I've added a TextBox control to my XAML definition for the ControlTemplate for the CarouselDataRecordPresenter as per the following code:

<

StackPanel Grid.Row="0" Orientation="Horizontal" VerticalAlignment="Center" HorizontalAlignment="Center" >
    <TextBox Text="{Binding Path=Fields[Answer].Value, Mode=TwoWay,
        UpdateSourceTrigger=PropertyChanged}" FontSize="12" Foreground="Black"
        Width="216" />
</StackPanel>

The carousel is displaying the values from the DataTable fine, but the TextBox.Text is not successfully updating the DataTable's "Answer" column.

Note that I have specified TwoWay binding (should not be necessary because that is the default mode for the TextBox control) as well as the UpdateSourceTrigger property of the binding (just to test).

This is a really annoying problem! Now I have to try to programatically determine what the TextBox.Text value is and manually update the datasource. Any direction on where to start doing so would be most helpful.

General Discussions

answered on 14 Jul 2008

3 answers

134 views

RadCarousel: does not work in WPF Browser applications?

As far as I can determine, the RadCarousel control does not work in WPF Browser applications. I started my current project as a WPF Browser app and after hours of not being able to get RadCarousel to work, I copied & pasted my XAML and C# code into a WPF application and it worked just fine.

Can you confirm that this is a problem, and whether it is expected to be addressed before release?

General Discussions

answered on 12 Jul 2008

3 answers

133 views

RadCarousel: height of CarouselItems

Copied from my XAML code:

<

Style TargetType="{x:Type Telerik:CarouselItem}">
    <Setter Property="Template" >
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Telerik:CarouselItem}">
                <Grid ClipToBounds="False" Height="175" Width="350" >

Strangely, the Width property on the last line does make my carousel items wider/narrower, but the Height property does not. Is this an issue (and thus subject to being fixed) or is it broken by design?

General Discussions

answered on 11 Jul 2008

1 answer

122 views

[Solved] Exception when changing ItemsSource

Not sure where to file this bug report, but when changing the ItemsSource property of the grid we sometimes get

    
            {System.NullReferenceException: Object reference not set to an instance of an object. 
        
               at Telerik.Windows.Controls.UI.DistinctFilterControl.PopulateDistinctValues() 
        
               at Telerik.Windows.Controls.UI.DistinctFilterControl.<DistinctFilterControl_Loaded>b__0()}

we have IsFilteringAllowed set to False if that helps.

Many thanks,

Will Holley

General Discussions

answered on 10 Jul 2008

6 answers

239 views

[Solved] Custom sort behaviour

The current SortingRequested event only fires when the field being sorted implenents IComparable (seemly making the custom sort behaviour irrelevant?). In order to work around this (we want to sort at the database) I tried subclassing GridViewDataColumn so I could override CanSort() to remove this constraint. However, CanSort is not a virtual method so this doesn't work.

Do you have any suggestions to work around this behaviour? Adding a dummy IComparable implmentation to all of our entities is not really a good solution for us.

Many thanks,

Will Holley

General Discussions

answered on 09 Jul 2008

5 answers

158 views

[Solved] RadGridView Beta 2

Hi Guys - congratulations on Beta 2 - it's a big step forward and seems to fix most of the issues we encountered in the first release!

Just a couple of issues that have come up for us with the new release:

1. Is it possible to turn off the filtering feature?
2. The autofit column algorithm does not include the header text (we would expect it to)
3. When adding field descriptions dynamically and refreshing the data, we get:

{System.NullReferenceException: Object reference not set to an instance of an object.

   at Telerik.Windows.Controls.UI.DistinctFilterControl.PopulateDistinctValues()

   at Telerik.Windows.Controls.UI.DistinctFilterControl.<DistinctFilterControl_Loaded>b__0()}

Any help with these would be much appreciated,

Will Holley

General Discussions

answered on 08 Jul 2008

4 answers

297 views

[Solved] Binding to LeftDoubleClick

It would be useful to be able to bind commands to LeftMouseClick (using RadGridView.InputBindings). For example,

    
            <UI:RadGridView.InputBindings> 
        
                 <MouseBinding Command="{x:Static Entity:EntityCommands.EditCommand}" MouseAction="LeftDoubleClick"/> 
        
            </UI:RadGridView.InputBindings>

However, it appears that this is not supported, even when the fields are set to readonly.

If I change the above snippet to use MiddleClick, the command is fired.

Is this a bug or intended behaviour?

Many thanks,

Will Holley

General Discussions

answered on 07 Jul 2008