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Export with nested class

5 Answers 157 Views

GridView

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

Onno asked on 18 Feb 2014, 02:17 PM

Hi,

I think we are seeing a problem with Exporting when the class in the collection that the RadGridView binds to has a sub class, and one of the properties of that sub class has a converter on it. This is an example (Sub Item B is causing the trouble):

<telerik:RadGridView x:Name="testRadGridView" ItemsSource="{Binding ItemList}" AutoGenerateColumns="False">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding Path=MainItemA}" Header="Main Item A " />

<telerik:GridViewDataColumn DataMemberBinding="{Binding Path=MainItemB}" Header="Main Item B " />

<telerik:GridViewDataColumn DataMemberBinding="{Binding Path=SubItem.SubItemA}" Header="Sub Item A" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding Path=SubItem.SubItemB, Converter={StaticResource MyTestConverter}}" Header="Sub Item B" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

And this is the code:

public class Item

{

public string MainItemA { get; set; }

public int MainItemB { get; set; }

public SubItem SubItem { get; set; }

public class SubItem

{

public string SubItemA { get; set; }

public DateTime SubItemB { get; set; }

public class TestConverter : IValueConverter

{

public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)

{

DateTime dateTimeValue = (DateTime)value;

return dateTimeValue.ToString("yyyy-MM-dd HH:mm:ss");

}

public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)

{

throw new NotSupportedException();

}

public class MainWindowViewModel

{

public ObservableCollection<Item> ItemList { get; set; }

public MainWindowViewModel()

{

ItemList = new ObservableCollection<Item>();

ItemList.Add(new Item { MainItemA = "Main Item A1", MainItemB = 1, SubItem = new SubItem { SubItemA = "Sub Item A1", SubItemB = new DateTime(2014,1,1,13,12,11) } });

ItemList.Add(new Item { MainItemA = "Main Item A2", MainItemB = 2, SubItem = new SubItem { SubItemA = "Sub Item A2", SubItemB = new DateTime(1999, 4, 3, 2, 1, 0) } });

}

In the Export, the converter is not applied, and the output logging of VS contains this:
System.Windows.Data Error: 40 : BindingExpression path error: 'SubItem' property not found on 'object' ''ExportElement' (HashCode=6)'. BindingExpression:Path=SubItem.SubItemA; DataItem='ExportElement' (HashCode=6); target element is 'ValueSetter' (Name=''); target property is 'Value' (type 'Object')
System.Windows.Data Error: 40 : BindingExpression path error: 'SubItem' property not found on 'object' ''ExportElement' (HashCode=6)'. BindingExpression:Path=SubItem.SubItemB; DataItem='ExportElement' (HashCode=6); target element is 'ValueSetter' (Name=''); target property is 'Value' (type 'Object')

Product version 2013.3.1016.40, VS2010 SP1, Windows 7 x64.

Any ideas?

Export with nested class

5 Answers, 1 is accepted