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[Solved] q3 beta 2 and HierarchyChildTemplate

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david ocasio asked on 04 Nov 2009, 03:48 PM

I am trialing q3 beta 2

i would like to use the hierarchal grid feaure with beta 2

i tried previously but the preformance was lacking
since you guys have increased the speed i thought i would try again

if i do not use a template it works fine
as soon as i use the template the child grid columns and rows fail to show up .
i assume either i am missiing something like passing the binding to the template
or the api has changed and i should do it differently

    
                                            <telerikGridView:RadGridView Grid.Row="3" x:Name="KitPullWorksheet" AutoGenerateColumns="True" > 
        
                                                <telerikGridView:RadGridView.HierarchyChildTemplate> 
        
                                                    <DataTemplate> 
        
                                                        <telerikGridView:RadGridView AutoGenerateColumns="True">  
        
                                                        </telerikGridView:RadGridView> 
        
                                                    </DataTemplate> 
        
                                                </telerikGridView:RadGridView.HierarchyChildTemplate> 
        
                                            </telerikGridView:RadGridView>

i am setting the definition in code

    
                    Dim detailDefinition As New GridViewTableDefinition()  
        
                    detailDefinition.Relation = New PropertyRelation("PullListBins")  
        
                    KitPullWorksheet.TableDefinition.ChildTableDefinitions.Add(detailDefinition)  
        
                    KitPullWorksheet.ItemsSource = Context.PullListParts

any help would be appreciated

thanks
dco

8 Answers, 1 is accepted

Accepted

answered on 09 Nov 2009, 10:59 AM

Hi,

I had implemented the HierarchyChildTemplate in the Q2 release, and after the Q3 release upgraded the code reference to the latest dlls. On doing so I found that the Hierarchical child gridviews were not populating.

I m assigning the data source of a GridViewTableDefinition object with the e.result of the webservice, which gets me data for the child grids. also before binding the data I m setting the table relation between the parent and child grids.

    
            if (e.Result.Count > 0) 
        
                            { 
        
                                TableRelation relation = new TableRelation(); 
        
                                relation.FieldNames.Add(new FieldDescriptorNamePair("CategoryId", "CategoryId")); 
        
                                GridViewTableDefinition subCategoryTableDefination = new GridViewTableDefinition(); 
        
                                subCategoryTableDefination.Relation = relation;  
        
                                olstSubCategory = e.Result; // olstSubCategory is an observable list object 

                                subCategoryTableDefination.DataSource = olstSubCategory; 
        
                                grdSelectCategory.ChildTableDefinitions.Add(subCategoryTableDefination); 
        
                            }

I want the solution asap, as application release is this weekend.

Thanks,
Krishna

answered on 25 Nov 2009, 07:23 AM

Hi, How are you?

I have a Hierarchical grid with components and requirements. I have used TableRelation and FieldDescriptorNamePair to connect the parent grid whit his child.
The following code, call a Domain Service operation and load the requirement collection:

    
                        App.Current.Servicio.Load(App.Current.Servicio.GetRequisitosPorEvaluacionQuery(EvaluacionActual.IdEvaluacion),  
        
                            CargaRequisitosCallback, null);

I have a callback method to be called when the load operation complete.
In this method, I setup the GridViewDataControl and set control DataSource.

 
private void CargaRequisitosCallback(LoadOperation<RequisitoEvaluacion> operacionCarga)
 
{
 
if (operacionCarga.Error != null)
 
{
 
throw operacionCarga.Error;
 
}

TableRelation relacion = new TableRelation();
 
relacion.FieldNames.Add(
new FieldDescriptorNamePair("IdComponente", "IdComponente"));
 
GridViewTableDefinition definicionTablaHija = new GridViewTableDefinition();
 
definicionTablaHija.AutoGenerateFieldDescriptors = 
false;
 
GridViewDataColumn columnaRequisito = new GridViewDataColumn();
 
columnaRequisito.DataMemberBinding = 
new Binding("Descripcion");
 
columnaRequisito.Header = 
"Requisito";
 
columnaRequisito.IsFilterable = 
true;
 
columnaRequisito.TextAlignment = 
TextAlignment.Left;
 
definicionTablaHija.FieldDescriptors.Add(columnaRequisito);

definicionTablaHija.DataSource = 
App.Current.ServicioSISVE.RequisitoEvaluacions;
 
definicionTablaHija.Relation = relacion;
GridViewDetalleEvaluacion.TableDefinition.ChildTableDefinitions.Add(definicionTablaHija);
}

The problem is when I run the application, the grid is empty.This code has worked perfectly in Q2 release, but in Q3, It doesn't working.
Somebody knows what's happening?

Thanks a lot...

answered on 25 Nov 2009, 08:09 AM

Hi Juan,

Try removing the code
GridViewDetalleEvaluacion.TableDefinition.ChildTableDefinitions.Add(definicionTablaHija);

and add

xmlns

:telerik="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView"

telerik:RadGridView.ChildTableDefinitions>

<telerik:GridViewTableDefinition />

</telerik:RadGridView.ChildTableDefinitions>

in your xaml. This had worked for me. Hope it helps :)

Regards,
Krishna