CODEWITHSUNDEEP
wpfdata-bindingbinding
mpen
mpen

Reputation: 283273

How to set up a binding in WPF?

I've got a window with a field like this:

public partial class VariablesWindow : Window
{
    public Dictionary<string, string> Variables { get; private set; }

And then in the window's XAML, I've created a ListView. How do I set the ItemsSource to bind to Variables?

<ListView ItemsSource="???"

Upvotes: 1

Views: 523

Answers (4)

Jon
Jon

Reputation: 437734

<ListView ItemsSource="{Binding Path=Variables}" />

However, you may find it more useful to bind directly to keys or values, which you would do like this:

<ListView ItemsSource="{Binding Path=Variables.Values}" />

Update: These bindings will work as long as your DataContext is null or equal to this. Otherwise, you would need to use something more cumbersome, like

<ListView ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=x:Type Window}}, Path=Variables}

For binding help, take a look at this superb cheat sheet.

Upvotes: 1

ChrisF
ChrisF

Reputation: 137188

I think the following should work:

<ListView ItemsSource="{Binding Path=Variables}" />

I'm not in a position to double check this right now, so I'm not 100% of whether the Path= is needed or not.

There's more information on the binding syntax on the MSDN here and here. All their examples have the Path= syntax.

And you will have to set the DataContext.

Upvotes: 1

mpen
mpen

Reputation: 283273

This works, but it's a bit ridiculously verbose:

ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=my:VariablesWindow, AncestorLevel=1}

Doesn't seem like the best way to do it.

Upvotes: 0

ChrisNel52
ChrisNel52

Reputation: 15173

I think what ChrisF posted would work...

<ListView ItemsSource="{Binding Variables}" />

But you may need to explicity set the DataContext.

this.DataContext = this;

Upvotes: 4

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