WPF listview display converter

I have a collection of objects that derive from a Person class and I want to bind this collection to the ItemsSource of a ListView.

I want to specify a string to display in the ListView Items. This string will be a composite of properties found on the derived classes.

I also want to bind the SelectedItem of the ListView to a property of type Person in my view model.

As far as I see it I need a string converter for my display string but I'm unsure how to bind to the items within the ItemsSource to generate the compo开发者_如何学Gosite display string.

Can anyone give me a pointer?

Thanks.

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You can either overwrite the ToString() method of your derived classes to return your composite display string, or you can create a Converter like you are suggesting and pass it the entire Item. The converter would then check that the item is of a specified type, and if so compose a string of whatever properties you want.

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you dont need the StringConverter, you need DataTemplate

using DataTemplate, you can choose how you would like to display you data as an item in your listBox.

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If you could consider your derived class a ViewModel then you could just add a property to that class and then display it in the ListView ItemTemplate. Or like Rachel suggested override your ToString Method and then in your display binding simply write "{Binding}" which will force WPF to call the ToString method

e.g.

public class DerivedPerson : Person
{
  public string DisplayString 
  {
    get 
    {
      return string.Format("{0} {1}",FirstName,LastName);
    }
  }  
}

And you xaml:

<ListView ItemsSource="{Binding PersonList}" SelectedItem="{Binding SelectedPerson}">
  <ListView.ItemTemplate>
    <DataTemplate>
      <TextBlock Text={Binding DisplayString}"/>
    </DataTemplate>
  </ListView.ItemTemplate>
</ListView>