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GridView

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answered on 06 Jul 2009, 02:26 PM

I have the same problem. I spend on the examples many hours, but it is hard to understand what is going on. I`ve used DataGrid by wpftoolkit and everything was obvious, but here for 2 days I have constant errors.

I want to create RadGridView with one HierarchyChildTemplate. I have temporary created class what retrieves summatry data from database, ex:
class User { int Id{get;set;}}

class Item
{
User User{get;set;}
int Sum{get;set;}
}

class SubItem
{
User User{get;set;}
int DetailedValue{get;set;}
DateTime Date{get;set;}
}

How to assign objects of Items to objects of SubItem. I do something like this:

dataGrid.ItemsSource = items.AsEnumerable();

TableRelation relation = new TableRelation();
relation.FieldNames.Add(new FieldDescriptorNamePair("User.Id", "User.Id"));

GridViewTableDefinition definition = new GridViewTableDefinition();
definition.AutoGenerateFieldDescriptors = false;

definition.DataSource = subitems.AsEnumerable();
definition.Relation = relation;

dataGrid.TableDefinition.ChildTableDefinitions.Add(definition);

And when I click on the +, I get "Value cannot be null".

answered on 07 Jul 2009, 08:08 AM

Thanks for that, now I have another problem:
I do:
GridViewTableDefinition detailDefinition = new GridViewTableDefinition();
detailDefinition.Relation = new PropertyRelation("Data");
dataGrid.TableDefinition.ChildTableDefinitions.Add(detailDefinition);
dataGrid.ItemsSource = data.AsEnumerable();

and

<telerik:GridViewDataControl.HierarchyChildTemplate>
                <DataTemplate>
                    <StackPanel Background="#FF525252">
                        <Border BorderBrush="#FFFDDFAA" BorderThickness="2">
                            <telerik:RadChart x:Name="radChartSales" HorizontalAlignment="Stretch" Loaded="radChartSales_Loaded"
                                              MinWidth="200" Height="200" />
                        </Border>
                    </StackPanel>
                </DataTemplate>
            </telerik:GridViewDataControl.HierarchyChildTemplate>

I want put data into chart. since here it works, but

private void radChartSales_Loaded(object sender, RoutedEventArgs e)
        {
            var chart = sender as RadChart;
            var radSource = chart.DataContext as RecordManager;

            radSource.EnumerableData // contains what I need but it`s private. instead of that I have some Record objects? and no acces to data. I want to operate separately on each stored item and put it into chart series
        }