Hierarchy Expand

[Orit]

How can I remove the expand icon where there is no data in the child
this is my code

<telerik:RadGridView  Margin="15,5,15,5" Name="gvRequest" Height="auto" Width="Auto"
                                 xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
                                 telerik:StyleManager.Theme="Simple" AutoGenerateColumns="False"
                                 IsFilteringAllowed="False" FlowDirection="RightToLeft" ShowGroupPanel="False">
                    <telerik:RadGridView.Columns>
                        <telerik:GridViewDataColumn UniqueName="ActivityName" Header="שם&#13;תת פעילות" Width="Auto" />
                        <telerik:GridViewDataColumn UniqueName="RequestID" Header="מספר&#13;דרישה" Width="Auto" />
                        <telerik:GridViewDataColumn UniqueName="RequestName" Header="שם&#13;דרישה" Width="Auto" />
                        <telerik:GridViewDataColumn UniqueName="RequestTotal" Header="סכום הדרישה &#13;(K ש''ח)" Width="Auto" />
                        <telerik:GridViewDataColumn UniqueName="RequestType" Header="סוג&#13;הדרישה" Width="Auto" />
                        <telerik:GridViewDataColumn UniqueName="Supplier" Header="ספק" Width="Auto" />
                        <telerik:GridViewDataColumn UniqueName="RequestBalance" Header="יתרה בדרישה &#13;(K ש''ח)" Width="Auto" />
                    </telerik:RadGridView.Columns>
                        <telerik:RadGridView.HierarchyChildTemplate>
                            <DataTemplate>
                                <StackPanel DataContext="{x:Null}">
                                    <telerik:RadGridView CanUserReorderColumns="False" Name="gvOrder"
                                             CanUserFreezeColumns="False" ShowGroupPanel="False" ColumnsWidthMode="Auto" AutoGenerateColumns="False" ItemsSource="{Binding}"
                                             Loaded="OnChildGridLoaded" FlowDirection="RightToLeft" IsFilteringAllowed="False" ShowColumnHeaders="True" ColumnBackground="AliceBlue" HorizontalContentAlignment="Right" ClipToBounds="True">
                                        <telerik:RadGridView.Columns>
                                            <telerik:GridViewDataColumn UniqueName="OrderID" Header="מספר&#13;הזמנה" Width="Auto" />
                                            <telerik:GridViewDataColumn UniqueName="OrderName" Header="שם&#13;הזמנה" Width="Auto" />
                                            <telerik:GridViewDataColumn UniqueName="OrderTotal" Header="סכום הזמנה &#13;(K ש''ח)" Width="Auto" />
                                                                                    </telerik:RadGridView.Columns>
                                    </telerik:RadGridView>
                                </StackPanel>
                            </DataTemplate>
                        </telerik:RadGridView.HierarchyChildTemplate>
                    </telerik:RadGridView>

private void BindDataMainGrid()
        {
            try
            {

                DataSet dataSet = this.GetData();

                // This is needed to make the grid use the HierarchyChildTemplate
                GridViewTableDefinition detailDefinition = new GridViewTableDefinition();

                // Tell the detailsDefinition to pull its data from the Details DataTable.
                detailDefinition.DataSource = dataSet.Tables["Order"].DefaultView;

                // Specify the relation between the two tables, similar to what is done in the DataSet.
                TableRelation tr = new TableRelation();
                tr.FieldNames.Add(new FieldDescriptorNamePair("RequestID", "RequestID"));
                detailDefinition.Relation = tr;

                // Add a GridViewTableDefinition to the grid to make it use the HierarchyChildTemplate
                // defined in XAML.
                if (this.gvRequest.TableDefinition.ChildTableDefinitions.Count < 1)
                    this.gvRequest.TableDefinition.ChildTableDefinitions.Add(detailDefinition);

                // Bind the grid to the "master" table.
                this.gvRequest.ItemsSource = dataSet.Tables["Request"].DefaultView;
            }
            catch
            {
                this.gvRequest.ItemsSource = CommonValues.GetDataTabel().DefaultView;
            }
        }

        private void OnChildGridLoaded(object sender, RoutedEventArgs e)
        {
            // Pull data from the detail table based on the relation.
            var dataRowView = (DataRowView)((RadGridView)sender).ParentRow.DataContext;
            var ds = dataRowView.DataView.Table.DataSet;
            var childData = dataRowView.CreateChildView(ds.Relations["RequestID"]);

            // Manually set the DataContext of the child grid.
            // We have stopped a wrong DataContext propagating down to this child grid
            // in the XAML file by wrapping the child grid in a StackPanel and setting
            // the StackPanel's DataContext to null.
            ((RadGridView)sender).DataContext = childData;

       }

        private DataSet GetData()
        {
            try
            {
                DataSet ds = new DataSet();
                dsRequest dsr = ServiceData.GetRequestAndOrder(0,0,1,2009,0);
                ds.Tables.Add(dsr.Tables["Request"].Copy());
                ds.Tables.Add(dsr.Tables["Order"].Copy());
                ds.Relations.Add("RequestID",
                ds.Tables["Request"].Columns["RequestID"],
                ds.Tables["Order"].Columns["RequestID"]);
                return ds;
            }
            catch
            {
                return null;
            }

        }

 

Thanks

[Vlad]

Hello Orit,

You can use PreviewDataRecordCreate event to achieve this similar to this example:
http://demos.telerik.com/wpf/?GridView/Hierarchy/CustomHierarchy

Kind regards,
Vlad
the Telerik team

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[Orit]

Thanks for the quick replay
in this example you add the child only at runtime
but I have to add it also in the xaml (since I want to change the header etc.)
How can I use that PreviewDataRecordCreate ?
I tried to do the following but the icon is still there

private void MasterTableDefinition_PreviewDataRowCreate(object sender, DataRecordCreateEventArgs e)
        {
            e.IsExpandableRecord = false ;
        }

[Orit]

Another question, about the design
I use the ColumnsWidthMode="Fill" property 
in order to stretch the columns
In the parent grid it works fine
but in the child grid it does not work

<telerik:RadGridView Name="gvRequest"
                                 xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
                                 Width="auto" ColumnsWidthMode="Fill"
                    AutoGenerateColumns="False" FlowDirection="RightToLeft" ShowGroupPanel="False" IsFilteringAllowed="False">
                    <telerik:RadGridView.Columns>
                        <telerik:GridViewDataColumn UniqueName="ActivityID" Header="שם&#13;תת פעילות"  />
                        <telerik:GridViewDataColumn UniqueName="RequestID" Header="מספר&#13;דרישה"  />
                        <telerik:GridViewDataColumn UniqueName="RequestName" Header="שם&#13;דרישה"  />
                        <telerik:GridViewDataColumn UniqueName="RequestTotal" Header="סכום הדרישה &#13;(K ש''ח)" />
                        <telerik:GridViewDataColumn UniqueName="RequestType" Header="סוג&#13;הדרישה"  />
                        <telerik:GridViewDataColumn UniqueName="Supplier" Header="ספק"  />
                        <telerik:GridViewDataColumn UniqueName="RequestBalance" Header="יתרה בדרישה &#13;(K ש''ח)"  />
                    </telerik:RadGridView.Columns>
                        <telerik:RadGridView.HierarchyChildTemplate>
                            <DataTemplate>
                                <StackPanel DataContext="{x:Null}">
                                        <telerik:RadGridView Name="gvOrder" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
                                                             Width="auto" ColumnsWidthMode="Fill" AutoGenerateColumns="False" ShowColumnHeaders="False"
                                                             FlowDirection="RightToLeft" ShowGroupPanel="False" IsFilteringAllowed="False" Loaded="OnChildGridLoaded">
                                        <telerik:RadGridView.Columns>
                                            <telerik:GridViewDataColumn UniqueName="ActivityID" Header="שם&#13;תת פעילות"  />
                                            <telerik:GridViewDataColumn UniqueName="OrderID" Header="מספר&#13;הזמנה"  />
                                            <telerik:GridViewDataColumn UniqueName="OrderName" Header="שם&#13;הזמנה"  />
                                            <telerik:GridViewDataColumn UniqueName="OrderTotal" Header="סכום הזמנה &#13;(K ש''ח)"  />
                                            <telerik:GridViewDataColumn UniqueName="OrderType" Header="סוג&#13;הדרישה"  />
                                            <telerik:GridViewDataColumn UniqueName="Supplier" Header="ספק"  />
                                            <telerik:GridViewDataColumn UniqueName="OrderBalance" Header="יתרה בהזמנה &#13;(K ש''ח)"  />
                                        </telerik:RadGridView.Columns>
                                    </telerik:RadGridView>
                                </StackPanel>
                            </DataTemplate>
                        </telerik:RadGridView.HierarchyChildTemplate>
                    </telerik:RadGridView>

I also try to set Width="100*"  for each column
and again in the parent its ok in the child not.

[Charlie]

I have the same problem with Filling the columns in the Child Grid as well.  The example from the link below worked in previous versions of the Gridview component, but it does not work for the current version (2009.Q2).  How do we get the Child Grid to Fill like in the old sample.  Can you updated the HierarchyWithMode sample to work with the 2009.Q2 version where it Fills the Child Grid?

http://www.telerik.com/community/forums/wpf/gridview/styling-childtable-in-hierarchical-grid.aspx

Thanks,

Charlie J.

[Vlad]

Hello guys,

Both issues (PreviewDataRecordCreate and ColumnsWidthMode="Fill" for child tables) were confirmed however we will need more time to investigate and fix these.

Once we are ready I will post update here.

Greetings,
Vlad
the Telerik team

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[Meliton Tienda]

I have the same problem with

ColumnsWidthMode

and

PreviewDataRecordCreate

event,
I´m use the version  2010.1.515.1030 of telerik controls

thanks for your help

[Vlad]

Hello,

These properties were deleted back in Q3 2009. You can use ColumWidth="*" instead ColumnsWidthMode="Fill" and RowLoaded instead PreviewDataRecordCreate - please check our demos for more info.

All the best,
Vlad
the Telerik team

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