CODEWITHSUNDEEP
wpfstyles
user3875080
user3875080

Reputation: 75

Set style based on variable?

I have a control that wants to adjust its style based on a variable within its datacontext. As is I have a ListBox holding a list of contacts who are either customer or vendor.

Each contact has a name and is set to customer or vendor. Each customer has a recent purchase and an email whereas each vendor has a company name, fax, and sales info. So basically I'd like to have two separate styles based on the contact_type variable.

How could I do this?

Upvotes: 0

Views: 190

Answers (2)

Ross
Ross

Reputation: 4568

If you subclass your Contact class into Customer and Vendor types, then you can simply define a different DataTemplate for each type, and WPF will automatically use the correct one. They can be included as resources of the ListBox as in the sample below, or higher up in the tree.

<ListBox ItemsSource="...">
    <ListBox.Resources>

        <DataTemplate DataType="{x:Type Customer}">
           ...
        </DataTemplate>

        <DataTemplate DataType="{x:Type Vendor}">
           ...
        </DataTemplate>

    </ListBox.Resources>
</ListBox>

Upvotes: 0

paparazzo
paparazzo

Reputation: 45096

That is exactly what a DataTemplateSelector is designed to do

And really the template should be based on the class - not a variable
If the customer and vendor have some common properties then have them each implement the common interface

Upvotes: 1

Related Questions