This is a migrated thread and some comments may be shown as answers.

[Solved] Exception when editing in grouped mode, asynchronous

3 Answers 158 Views

GridView

This is a migrated thread and some comments may be shown as answers.

This question is locked. New answers and comments are not allowed.

Josh asked on 08 Jun 2010, 07:13 PM

This problem occurs when beginning edit mode on a cell while the radgridview is grouped by at least one column , and its DataLoadMode is set to Asynchronous. It does not occur in Synchronous mode, which is our current workaround. But the performance drop is noticeable in Synchronous mode...

    
            <UserControl x:Class="SpectrumSL.SilverlightControl1" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"   
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"   
        
                xmlns:telerik="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView">  
        
                <Grid> 
        
                    <telerik:RadGridView ItemsSource="{Binding Collection}"  ShowGroupPanel="True" DataLoadMode="Asynchronous"/>  
        
                </Grid> 
        
            </UserControl>

    
            Partial Public Class SilverlightControl1  
        
                Inherits UserControl  
        
                Private _collection As New ObservableCollection(Of tableitem)  
        
                Public Property Collection() As ObservableCollection(Of tableitem)  
        
                    Get 
        
                        Return _collection  
        
                    End Get 
        
                    Set(ByVal value As ObservableCollection(Of tableitem))  
        
                        _collection = value  
        
                    End Set 
        
                End Property 
        
                Private Sub SilverlightControl1_Loaded(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles Me.Loaded  
        
                    Me.DataContext = Me 
        
                    For index = 1 To 3  
        
                        Dim item As New tableitem  
        
                        item.Key = index  
        
                        item.Value = "group1" 
        
                        Collection.Add(item)  
        
                    Next 
        
                End Sub 
        
                Public Class tableitem  
        
                    Private _key As Integer 
        
                    Public Property Key() As Integer 
        
                        Get 
        
                            Return _key  
        
                        End Get 
        
                        Set(ByVal value As Integer)  
        
                            _key = value  
        
                        End Set 
        
                    End Property 
        
                    Private _value As String 
        
                    Public Property Value() As String 
        
                        Get 
        
                            Return _value  
        
                        End Get 
        
                        Set(ByVal value As String)  
        
                            _value = value  
        
                        End Set 
        
                    End Property 
        
                End Class 
        
            End Class

3 Answers, 1 is accepted

answered on 10 Jun 2010, 05:01 PM

grouped-gridview-error.jpg

Thanks for your response,
I made a new project, with latest build 2010.1.603.1040, and reproduced the error. It happened when hitting enter after editing, or clicking another cell, while in grouped mode, and Asynchronous DataLoadMode. I took a screenshot and I can reproduce this error every time on multiple PCs.