Question

I have a static Dictionary

class X { static Dictionary<string,string> MyDict {get { ... }} }

This Dictionary contains Data i want to show in a Grid-Control:

<Grid>
  <!-- Row and Column-Definitions here -->
  <Label Grid.Row="0" Grid.Column="0" Content="{Binding MyDict.Key=="foo" }" ToolTip="foo" />
  <!-- some more labels -->
</Grid>

1.) i dont know how to get access (in xaml) to the dictionary

2.) i want to bind the Value of a specified key to the Content-Property of the Label.

how to do this?

Answer 1

You need to use a converter which will allow you to extract your value out of the Dictionary via the ConverterParameter.

public class DictConverter: IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        Dictionary<string,string> data = (Dictionary<string,string>)value;
        String parameter = (String)parameter;
        return data[parameter];
    }
}

The XAML would be as follows…

<Window.Resources>
    <converters:DictConverter x:Key="MyDictConverter"/>
</Window.Resources>

Content="{Binding MyDictProperty, Converter={StaticResource MyDictConverter}, ConverterParameter=foo}"