I have a query that so far I haven't been able to find a solution too.
I have several datatemplates that are to be applied to a ListBox as follows:
< DataTemplate x:Key =" ValidationTemplate" DataType =" {x:Type meta:CustomerValidationResult}" > < views:ResultViewCustomerValidation / > < /DataTemplate > < DataTemplate x:Key =" FileLoadTemplate" DataType =" {x:Type meta:FileLoadResult}" > < views:ResultViewFileLoad / > < /DataTemplate > < DataTemplate x:Key =" ImportTemplate" DataType =" {x:Type meta:CustomerImportResult}" > < views:ResultViewCustomerImport / > < /DataTemplate >
Each of these is defined in the UserControl.Resources section of a user control and a DataTemplateSelector is applied to a Listbox to choose which to use.
This all works perfectly. However, I would like to introduce a second ValidationTemplate which is a "ResultViewCustomerValidationDetailed" and would like this to be enabled when an item of type "CustomerValidationResult" is selected.
I have read up on these links:
Change WPF DataTemplate for ListBox item if selected [ ^ ]
Focus and Selection Styling listbox items with multiple possible templates [ ^ ]
A Guided Tour of WPF – Part 4 (Data templates and triggers) [ ^ ]
http://blogs.msdn.com/b/wpfsdk/archive/2006/11/07/resource-style-datatemplate-controltemplate.aspx [ ^ ]
Thinking that they might point me in the right direction, and if I wasn't using a Template Selector they would work. However I cannot seem to grasp how to do a similar approach when using the Template Selector.
Any ideas? < DataTemplate x:Key =" ValidationTemplate" DataType =" {x:Type meta:CustomerValidationResult}" > < ContentControl Content =" {Binding Path=.}" > < ContentControl.Style > < Style TargetType =" {x:Type ContentControl}" > < Setter Property =" ContentTemplate" > < Setter.Value > < DataTemplate DataType =" {x:Type meta:CustomerValidationResult}" > < views:ResultViewCustomerValidation / > < /DataTemplate > < /Setter.Value > < /Setter > < Style.Triggers > < DataTrigger Binding =" {Binding Path=IsSelected}" Value =" True" > < Setter Property =" ContentTemplate" > < Setter.Value > < DataTemplate DataType =" {x:Type meta:CustomerValidationResult}" > < views:ResultViewCustomerValidationDetailed / > < /DataTemplate > < /Setter.Value > < /Setter > < /DataTrigger > < /Style.Triggers > < /Style > < /ContentControl.Style > < /ContentControl > < /DataTemplate >
Pay attention to DataTrigger defined in the style of the ContentControl. This trigger binds to the IsSelected property of your view-model. When the value of that property will be true, the detailed template will be applied.
Hope that helps.

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