WPF - Very basic ListBox.ItemTemplate Question

datatemplate, itemtemplate, listbox, wpf

Solution

`ItemTemplate` wont work when you put `ListBoxItem` directly as items. General concept is you databind a CRL collection to the `ListBox.ItemsSource` and then specify the `ItemTemplate`. Check the below code.

 <Grid x:Name="LayoutRoot">
        <ListBox x:Name="TestList"  SelectionMode="Multiple">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel>
                        <CheckBox Content="Check this checkbox!"/>
                        <TextBlock Text="{Binding}"/>
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
            <ListBox.Items>
                <sys:String>Bob</sys:String>
                <sys:String>Jim</sys:String>
                <sys:String>Dave</sys:String>
                <sys:String>Larry</sys:String>
                <sys:String>Tom</sys:String>
            </ListBox.Items>
        </ListBox>
    </Grid>

where `sys` is `xmlns:sys="clr-namespace:System;assembly=mscorlib"`

In this way, there are 5 `ListBoxItems` getting generated in the background and added to the `ListBox`.

Problem

Ok, this is an embarassingly simple-looking problem, but is driving me crazy. I'm learning about DataTemplating and am trying to apply a very VERY simple ItemTemplate to a ListBox. However, when I run my app, the template is completely ignored and I just get the standard-looking listbox, whereas in fact I'd expect to see a list of checkboxes with 'Test' along side. I've tried this several times and always the same result. I've checked several resource on Google and all have the same kind of syntax for defining and ItemTemplate on a ListBox, so I really cannot see where I'm going wrong. Code... ``` <Grid x:Name="LayoutRoot"> <ListBox x:Name="TestList" SelectionMode="Multiple"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel> <CheckBox Content="Check this checkbox!"/> <TextBlock>Test</TextBlock> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> <ListBox.Items> <ListBoxItem>Bob</ListBoxItem> <ListBoxItem>Jim</ListBoxItem> <ListBoxItem>Dave</ListBoxItem> <ListBoxItem>Larry</ListBoxItem> <ListBoxItem>Tom</ListBoxItem> </ListBox.Items> </ListBox> </Grid> ``` Any help greatly appreciated. Sorry for such a dumb-seeming question, but I've really fallen at the first hurdle here :( AT

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