Hi,

i have a working RadGridView with an XML-File which is bind by XMLDataProvider. I want to use a Telerik RadButton with a Command to insert, delete or edit Rows. But it does not work:

CODE:
                                                        <StackPanel Grid.Row="0" Orientation="Horizontal" HorizontalAlignment="left" Margin="0,5,0,0">
                                                            <telerik:RadButton Width="100" Content="Delete selected rows" Margin="0,0,5,0"
                                                                                Command="telerikGrid:RadGridViewCommands.Delete" CommandTarget="{Binding ElementName=radGridView2}"  />
                                                            <telerik:RadButton Width="100" Content="Add new row" Margin="0,0,5,0"
                                                                                Command="telerikGrid:RadGridViewCommands.BeginInsert" CommandTarget="{Binding ElementName=radGridView2}"  />
                                                            <telerik:RadButton Width="100" Content="Save insert/edit" Margin="0,0,5,0"
                                                                                Command="telerikGrid:RadGridViewCommands.CommitEdit" CommandTarget="{Binding ElementName=radGridView2}"  />
                                                            <telerik:RadButton Width="100" Content="Cancel insert/edit"
                                                                                Command="telerikGrid:RadGridViewCommands.CancelRowEdit" CommandTarget="{Binding ElementName=radGridView2}"  />
                                                        </StackPanel>
                                                        <Grid Grid.Row="1">                                                           
                                                            <Grid.Resources>
                                                                <XmlDataProvider x:Key="MADSource" Source="settings\mandanten.xml" XPath="//Attributes/Attribute[@AttributeGroup='Mandant']"></XmlDataProvider>
                                                            </Grid.Resources>
                                                            <telerik:RadGridView Visibility="Visible" x:Name="radGridView2" AutoGenerateColumns="False" ItemsSource="{Binding Source={StaticResource MADSource}}"
                                                                                 CanUserDeleteRows="True" CanUserInsertRows="True" IsReadOnly="False" ShowGroupPanel="False" SelectionMode="Extended">
                                                                <telerik:RadGridView.Columns>
                                                                    <telerik:GridViewDataColumn DataMemberBinding="{Binding XPath=ContentAttribute[@AttributeName\=\Name] }" Header="Name" Width="120">
                                                                        <telerik:GridViewDataColumn.CellTemplate>
                                                                            <DataTemplate>
                                                                                <ContentControl Content="{Binding XPath=ContentAttribute[@AttributeName\=\'Name\']}">
                                                                                </ContentControl>
                                                                            </DataTemplate>
                                                                        </telerik:GridViewDataColumn.CellTemplate>
                                                                    </telerik:GridViewDataColumn>
                                                                    <telerik:GridViewDataColumn DataMemberBinding="{Binding XPath=ContentAttribute[@AttributeName\=\Host] }" Header="Host" Width="100">
                                                                        <telerik:GridViewDataColumn.CellTemplate>
                                                                            <DataTemplate>
                                                                                <ContentControl Content="{Binding XPath=ContentAttribute[@AttributeName\=\'Host\']}">
                                                                                </ContentControl>
                                                                            </DataTemplate>
                                                                        </telerik:GridViewDataColumn.CellTemplate>
                                                                    </telerik:GridViewDataColumn>
                                                                    <telerik:GridViewDataColumn DataMemberBinding="{Binding XPath=ContentAttribute[@AttributeName\=\Port] }" Header="Port" Width="50">
                                                                        <telerik:GridViewDataColumn.CellTemplate>
                                                                            <DataTemplate>
                                                                                <ContentControl Content="{Binding XPath=ContentAttribute[@AttributeName\=\'Port\']}">
                                                                                </ContentControl>
                                                                            </DataTemplate>
                                                                        </telerik:GridViewDataColumn.CellTemplate>
                                                                    </telerik:GridViewDataColumn>
                                                                </telerik:RadGridView.Columns>
                                                            </telerik:RadGridView>
CODEBEHIND:
    Public Sub New()

        Dim deleteCommand As ICommand = RadGridViewCommands.Delete
        Dim beginInsertCommand As ICommand = RadGridViewCommands.BeginInsert
        Dim cancelRowEditCommand As ICommand = RadGridViewCommands.CancelRowEdit
        Dim commitEditCommand As ICommand = RadGridViewCommands.CommitEdit

        InitializeComponent()
    End Sub

I get no errors, but the buttons do not work and i can't edit the Columns. HELP!!!
Rene

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Searching for a WPF property grid I found this forum. I'm implementing a solution, where I need a property grid soon.

How long will it take until you release it?

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the functions that I need are not working properly or I'm using it in a wrong way

Hy,

When moving our application window or resizing it then we get an ArgumentNullException in the DataItemAutomationPeer class.

We are currently on the binaries RadControls for WPF Q1 2011.
I looked at the currently available source code "01348RadControls_for_WPF_40_2011_1_0613_DEV_hotfix".

Callstack on Exception:
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.Automation.DataItemAutomationPeer.DataItemAutomationPeer(object dataItem, Telerik.Windows.Controls.GridView.Automation.GridViewDataControlAutomationPeer dataControlAutomationPeer) Line 78 C#
> Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.Automation.GridViewDataItemAutomationPeer.GridViewDataItemAutomationPeer(object dataItem, Telerik.Windows.Controls.GridView.Automation.GridViewDataControlAutomationPeer dataControlAutomationPeer) Line 25 C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.Automation.RadGridViewAutomationPeer.CreateDataItemAutomationPeer(object dataItem) Line 97 + 0x2f bytes C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.Automation.GridViewDataControlAutomationPeer.GeneratePeersForDataItems(System.Collections.Generic.List<System.Windows.Automation.Peers.AutomationPeer> newPeerList, Telerik.Windows.Controls.GridView.Automation.AutomationPeerStorage<object,Telerik.Windows.Controls.GridView.Automation.DataItemAutomationPeer> oldCachedPeers) Line 111 + 0x1c bytes C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.Automation.GridViewDataControlAutomationPeer.GetItemPeers() Line 101 C#
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.Automation.GridViewVirtualizingPanelAutomationPeer.GetChildrenCore() Line 79 + 0x21 bytes C#

What I saw in the source is:

In class GridViewDataControlAutomationPeer a check is done for (dataitem == null), see below:

        private void GeneratePeersForDataItems(List<AutomationPeer> newPeerList, AutomationPeerStorage<object, DataItemAutomationPeer> oldCachedPeers)
        {
            foreach (object dataItem in this.Items)
            {
                DataItemAutomationPeer dataItemPeer = oldCachedPeers.FindPeer(dataItem);

                if (dataItemPeer == null)
                    dataItemPeer = this.CreateDataItemAutomationPeer(dataItem);

                SetUpOwnerRowEventsSource(dataItemPeer);

                this.cachedPeers[dataItem] = dataItemPeer;
                newPeerList.Add(dataItemPeer);
            }
        }

Then later in the ctor of DataItemAutomationPeer I saw the following code:
        protected DataItemAutomationPeer(object dataItem, GridViewDataControlAutomationPeer dataControlAutomationPeer)
            : base(dataControlAutomationPeer.OwnerGridViewDataControl)
        {
            if (dataItem == null)
                throw new ArgumentNullException("dataItem");
            if (dataControlAutomationPeer == null)
                throw new ArgumentNullException("dataControlAutomationPeer");

            this.dataItem = dataItem;
            this.dataControlAutomationPeer = dataControlAutomationPeer;
        }

In my case I get the exception from this check in the ctor.

Kind regards,
Yvonne

Hi,

I was trying to apply filter on DataGridView column(IsFilterable =True). But not able to show icon on column header. My column is bounded with ObservalCollection<MyType> and a am showing values in a Listbox.

Is it possible to show filtering on collection type column, also i want to show custom control(FilterControl) when user click on filter icon.
For example suppose my RadGridView bounded to a collection "ClaimList"
Collection ClaimList includes:
- Claim Number(int)
- Vehicle(String)
- Contact(String)
- Inspection date(DateTime)
- Next Actions (ObservalCollection<IClaimActions>)

The problem is with column Next Action which shows a list of possible actions on a particular Claim Number.

Thanks,
Umesh Kumar

Hi,
There is a problem with the forum's server when i try to acces to my post at http://www.telerik.com/community/forums/wpf/gridview/invalidoperationexception-when-group-sort-one-of-the-two-grids-binded-on-one-listcollectionview.aspx :

Oops...

It seems there was a problem with our server.

I have a Dell laptop running Windows 7 and Chrome 12.0 (most current version).  Here's what happens when I try to run the WPF demo:

1) I click "Click to Open" on the demo webpage
2) The XBAP downloads to my Downloads folder.
3) Chrome displays "This type of file can harm your computer.  Are you sure you want to download Telerik...amples.xbap?" on the downloads bar at the bottom of the Chrome window, with "Save" and "Discard" buttons.
4) I click "Save".
5) Return to step 2.

I stopped after I had 6 copies of the XBAP.

The demo runs on IE9 on the same laptop.  I would love to run the demo on Chrome, which appears to significantly faster on my laptop.

I am setting the itemsource of my radgridview using the code
WireInstructionDGV.ItemsSource = obj.GetWireInstruction("BNYBD", "MST", "CPTY", "USD")

To add a new row, i have a button who's click event has
Me.WireInstructionDGV.BeginInsert()

Clicking on the button does not add a new row in the datagrid. any ideas ?

(I do not have IsReadOnly = True or CanUserInsertRows  = False)