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09-Dec-2014 06:25

The following example shows were the Complex Group Data Template Selector can be used in your xaml: In order to support the use of multiple Items Source bindings we use a combination of the built-in type Multi Binding and the Complex Group Converter type found in this library.

Note also that for this to work correctly the Item Control must also use the Complex Group Data Template Selector.

The Complex Data Templates control library was designed to enhance how the Windows Presentation Foundation uses Data Templates and Hierarchical Data Templates to display hierarchical data in a Tree View or other similar controls.

If you are tearing your hair out trying to get data templates and tree views to do something more than displaying the simplest of data hierarchies then this library is for you!

In the example below you will find two Hierarchical Data Templates that make use of Multi Binding and the Complex Group Converter.

In addition to being able to specify data templates for IEnumerable collections, the Complex Group Data Template Selector will also find a template based on a interface implemented by the data item or a base type found in the data item hierachy.

Though data templates found in this manner are a little more expensive to perform than just a simple Type lookup, the Complex Group Data Template Selector caches it's resolutions to help reduce the overall performance impact.

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Project Description WPF enhancement allowing you to use your own business class structure to display complex hierarchies in a standard WPF Tree View control.

The included data template resolver and converter allow you to specify which templates are used based on your class types.

One of the coolest features that the Complex Group Data Template Selector gives you is the ability to select a Data Template for an interface implemented by the data item or any base type of the data item.

In the example shown above, all of the leaf nodes of the tree are displayed using one Data Template markup with it's Data Type property set to Data Type="{x: Type local: IItem}", since IItem is the interface implemented by all of the data items in the example, any data item not explicitly templated will get the default template for the IItem interface.

The template selector can be tuned for specify needs using a few properties.

For more information please look here: Complex Group Data Template Selector.