This is a migrated thread and some comments may be shown as answers.
selected row when grouping
7 Answers 37 Views
This is a migrated thread and some comments may be shown as answers.
Zbigniew Kozłowski
Top achievements
Rank 1
Zbigniew Kozłowski asked on 01 Oct 2010, 10:45 AM
Hi,
i got a problem with getting selected row when grid is groupped. I got event on 
GridView.RowDetailsProvider.PropertyChanged
than in void:
var selectedRow = (GridViewRow)this.ListGridView.ItemContainerGenerator.ContainerFromItem(this.ListGridView.SelectedItem);
but it works only when grid is not groupped. How can i get GridViewRow from group?

7 Answers, 1 is accepted

Sort by
0
Milan
Telerik team
answered on 04 Oct 2010, 07:00 AM
Hello Zbigniew Kozłowski,

Could you please provide us with more information about your scenario? It might be possible to achieve the goal without even retrieving a reference to a UI row. I am interested to know why it is necessary to access UI rows?

Sincerely yours,
Milan
the Telerik team
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items
0
Zbigniew Kozłowski
Top achievements
Rank 1
answered on 04 Oct 2010, 07:48 AM
well i need two things, one is to get object, but i could achive it without a reference to UI, but second thing is to change font weight of current row
0
Zbigniew Kozłowski
Top achievements
Rank 1
answered on 06 Oct 2010, 08:27 AM
so anyone can help me ?
0
Milan
Telerik team
answered on 07 Oct 2010, 07:46 AM

Hi Zbigniew Kozłowski,

You can easily bind the FontWeight property of the row to its IsSelected or IsCurrent property. You could try the following approach:

<my:BoolToFintWeightConverter x:Key="converter"/>
  
<Style TargetType="telerik:GridViewRow" x:Key="rowStyle">
    <Setter Property="FontWeight" 
            Value="{Binding IsSelected, 
        RelativeSource={RelativeSource Self}, 
        Converter={StaticResource converter}}"/>
</Style>

public class BoolToFintWeightConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        var boolValue = (bool) value;
  
        if (boolValue)
        {
            return FontWeights.Bold;
        }
        else
        {
            return FontWeights.Normal;
        }
    }
  
    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return null;
    }
}

The last step is to assign the custom row style to the RowStyle property of the grid.

Hope this helps.


Greetings,
Milan
the Telerik team
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items
0
Steve
Top achievements
Rank 1
answered on 13 May 2014, 07:40 PM
Milan,
It really doesn't matter why one would want to get the GridViewRow, how can you get it?

​var selectedRow = (GridViewRow)this.ListGridView.ItemContainerGenerator.ContainerFromItem(this.ListGridView.SelectedItem);
but it works only when grid is not groupped. How can i get GridViewRow from group?

And why does the above return null?

Thanks ahead of time,
Steve


0
Boris
Telerik team
answered on 14 May 2014, 01:16 PM
Hello Steve,

One possible reason for the ItemContainerGenerator.ContainerFromItem() method to stop working is for the SelectedItem to be null. You need a SelectedItem otherwise you won't get its container.

Another way to get the grouped row is to check if there are any groups and then use the ChildrenOfType<GridViewRow>() extension method on the GridView to get the selected row container. However, this will only work if the GroupRenderMode is set to Nested (this is the default mode), if its set to Flat you can use the ItemContainerGenerator.ContainerFromItem(grid.SelectedItem) method to get the selected container row container. 

private void Button1_Click(object sender, RoutedEventArgs e)
        {
            var grid = this.clubsGrid as RadGridView;
 
            if (grid.GroupCount > 0 && grid.SelectedItem != null)
            {
                if (grid.GroupRenderMode == GroupRenderMode.Nested)
                {
                    var groupedRows = grid.ChildrenOfType<GridViewRow>().FirstOrDefault(x => x.IsSelected);                
                }
                else
                {
                    // If GroupRenderMode="Flat" use this
                    var rowContainer = grid.ItemContainerGenerator.ContainerFromItem(grid.SelectedItem) as GridViewRow;
                }
            }
        }

For more information about ChildrenOfType() method you can check Easy programmatic UI customization for WPF and Silverlight blog post.

In order to advise you better could you please provide us with more details about your scenario ?

We are looking forward to your response.


Regards,
Boris Penev
Telerik
 
Check out Telerik Analytics, the service which allows developers to discover app usage patterns, analyze user data, log exceptions, solve problems and profile application performance at run time. Watch the videos and start improving your app based on facts, not hunches.
 
0
Steve
Top achievements
Rank 1
answered on 14 May 2014, 03:53 PM
Apparently the key was the GroupRenderMode!
Thanks for the quick response,
Steve
Asked by
Zbigniew Kozłowski
Top achievements
Rank 1
Answers by
Milan
Telerik team
Zbigniew Kozłowski
Top achievements
Rank 1
Steve
Top achievements
Rank 1
Boris
Telerik team
Share this question
or