SelectedItems Binding

[naresh]

Hi,

I am facing small problem.That I want know selectedItems in radgridview.I am using MVVM pattern.In code behind file i am able to get the selectedItems.But in my viewmodel I am I am not getting.I had tried with following code samples.

<Style TargetType="{x:Type telerik:GridViewRow}">
	<Setter Property="IsSelected" Value="{Binding Mode=OneWayToSource, Path=SelectedYN}"/>
</Style>

 and 

<telerik:RadGridView.ItemContainerStyle>
  <Style TargetType="{x:Type telerik:GridViewRow}">
	<Setter Property="IsSelected" Value="{Binding Mode=OneWayToSource, Path=SelectedYN}"/>
  </Style>
</telerik:RadGridView.ItemContainerStyle>

SelectedYN is a property in my viewModel.(Its updates the ItemsSource)

Please help me in this issue.

Thanks and Regards
Naresh Mesineni

[Pavel Pavlov]

Hi Naresh,

You have pasted just the XAMl, not the ViewModel nor the way you read the state in code behind.
So having the XAML only I guess the first place to  check would be the Binding mode . I have noticed it is  OneWayToSource.

All the best,
Pavel Pavlov
the Telerik team

[naresh]

Hi Pavlov,
Thanks for reply.Here I am pasting my viewmodel and code part.As I mentioned I am using MVVM pattern.

private string projectNumber;
 public string ProjectNumber
		{
	get { return projectNumber; }
	set
				{
		if (value != projectNumber)
					{
						projectNumber = value;
						NotifyOfPropertyChange(() => ProjectNumber);
					}
			}
		}
		
private string selectedYN;
 public string SelectedYN
		{
	get { return selectedYN; }
	set
				{
		if (value != selectedYN)
					{
						selectedYN= value;
						NotifyOfPropertyChange(() => SelectedYN);
					}
			}
		}

 Here I am accessing SelectedItems like this

var selectedItems = DataSourceItems.Where(x => x.SelectedYN).ToList();

DataSourceItems was gridview datasource.

in XAML I have tried following ways.Tried with all types of modes.

<Style TargetType="{x:Type telerik:GridViewRow}">
	<Setter Property="IsSelected" Value="{Binding Mode=OneWayToSource, Path=SelectedYN}"/>
</Style>
 and 

<telerik:RadGridView.ItemContainerStyle>
  <Style TargetType="{x:Type telerik:GridViewRow}">
	<Setter Property="IsSelected" Value="{Binding Mode=OneWayToSource, Path=SelectedYN}"/>
  </Style>
</telerik:RadGridView.ItemContainerStyle>

Please help in this matter.If possible provide example.

Thanks and Regards
Naresh Mesineni

[Dave]

Pavlov, or someone from Telerik
I am having this exact same problem. Is there a solution?

Dave

[Dave]

In case this is of any help to anyone, I solved the problem. In my case it was caused by the fact that all our telerik styles are overridden by a complete set of styles that implement our company look-and-feel. So we don't use the telerik XAML, we use a set of BAML DLLs developed by our UX team.
Anyway, try this:

<Style x:Key="MyGridViewRowStyle" TargetType="{x:Type telerik:GridViewRow}" BasedOn="{StaticResource {x:Type telerik:GridViewRow}}">
     <Setter Property="IsSelected" Value="{Binding Mode=OneWayToSource, Path=SelectedYN}"/>
</Style>
<Style TargetType="{x:Type telerik:GridViewRow}" BasedOn="{StaticResource MyGridViewRowStyle}" />

I don't know if this is a workaround for a bug in WPF, or whether it is necessary for some good reason that I don't understand, but it worked for me.

[Dave]

PS. On second thoughts I don't think the company style overrides have anything to do with it. It's just an oddity of WPF.

[Dimitrina]

Hi,

You can check this github example on how to bind the SelectedItems to a collection from your view model. 
Although GitHub is a very well-known platform we saw a better and easier approach for reviewing our examples developing our brand new SDK Samples Browser. You can also use it to review the examples.

I hope it will work better for you. Let me know what your observations are.

Regards,
Didie
Telerik