Proposal: Support implicitly typed DataTemplate like WPF

[weitzhandler]

Proposal: Support implicitly typed DataTemplate like WPF

Summary

WPF enables specifying DataTemplates to be selected based on the binding type.

This can be implemented as following:

<ItemsControl ItemsSource="{Binding Coll}">
    <ItemsControl.Resources>
        <DataTemplate DataType="{x:Type local:ClassOne}">
            <Rectangle Width="50" Height="50" Fill="Red" />
        </DataTemplate>
        <DataTemplate DataType="{x:Type local:ClassTwo}">
            <Rectangle Width="50" Height="50" Fill="Blue" />
        </DataTemplate>
    </ItemsControl.Resources>
</ItemsControl>

The ItemsControl will automatically resolve the correct DataTemplate according to the matching DataType.

Rationale

• Easy and straight forward
• Avoids tedious implementations and usage of DataTemplateSelector
• This feature exists in WPF

Scope

Capability	Priority
Keying DataTemplates by their type	Must
Additional keying options, perhaps bool, enum, or int	Could

Important Notes

Open Questions

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• Proposal: implicit DataTemplates (#1049), similarity score: 0.83

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[weitzhandler]

WOW! I can't believe I forgot I opened the very same issue 5 years ago!
Yup same issue indeed, gonna close.