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Ashish Ashu
Ashish Ashu

Reputation: 14667

In WPF how to define a Data template in case of enum?

I have a Enum defined as Type

public Enum **Type**
{
   OneType,
   TwoType,
   ThreeType
};

Now I bind Type to a drop down Ribbon Control Drop Down Menu in a Ribbon Control that displays each menu with a MenuName with corresponding Image.

( I am using Syncfusion Ribbon Control ).

I want that each enum type like ( OneType ) has data template defined that has Name of the menu and corrospending image.

How can I define the data template of enum ?

Please suggest me the solution, if this is possible !!

Please also tell me if its not possible or I am thinking in the wrong direction !!

Upvotes: 5

Views: 10564

Answers (3)

alexei
alexei

Reputation: 2301

Not sure whether this is an applicable solution to your particular situation, but it is relevant to the question of DataTemplate for enum. It is possible to create one DataTemplate for the enum type and use DataTriggers to tweak the controls in that template for individual enum value:

Enum:

enum MyEnumType 
{
    ValueOne,
    ValueTwo,
}

Template:

<DataTemplate DataType="{x:Type MyEnumType}">
    <TextBlock x:Name="valueText"/>
    <DataTemplate.Triggers>
        <DataTrigger Binding="{Binding}" Value="{x:Static MyEnumType.ValueOne}">
            <Setter TargetName="valueText" Property="Text" Value="First Value" />
        </DataTrigger>
        <DataTrigger Binding="{Binding}" Value="{x:Static MyEnumType.ValueTwo}">
            <Setter TargetName="valueText" Property="Text" Value="Second Value" />
        </DataTrigger>
    </DataTemplate.Triggers>
</DataTemplate>

Upvotes: 17

Robert Rossney
Robert Rossney

Reputation: 96702

It's very often the case that people use enums when they should be using polymorphism. You should, at the least, check to see if this is one of those cases. The presence of switch blocks in your class's code that check the value of the instance's enum is often a sign that this is a good idea. If you can eliminate the enum by defining subclasses, then you don't have to mess around with the likes of data template selectors and value converters.

Upvotes: 2

Thomas Levesque
Thomas Levesque

Reputation: 292405

One way to do it would be to create a DataTemplateSelector, and assign it to the ItemTemplateSelector property of the menu. In the code of the DataTemplateSelector, you just need to return a DataTemplate based on the enum value

Upvotes: 13

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