Built-in WPF IValueConverters

Question

Ok, it was a nice surprise (after writing it several times) to find that there already is a BooleanToVisibilityConverter in System.Windows.Controls namespace.
Probably there are more such hidden time-savers.
Anyone got some?

Answer 1

Before 3.5 SP1, an IValueConverter was required for string formatting. Now, you can use the StringFormat property on Binding to do this.

From the MSDN page:

<DataTemplate>
  <TextBlock>
    <TextBlock.Text>
      <MultiBinding  StringFormat="{}{0} -- Now only {1:C}!">
        <Binding Path="Description"/>
        <Binding Path="Price"/>
      </MultiBinding>
    </TextBlock.Text>
  </TextBlock>
</DataTemplate>

Answer 2

I did a quick trawl using the Object Browser and this what I have

Derived from IValueConverter

System.Windows.Controls.AlternationConverter
System.Windows.Controls.BooleanToVisibilityConverter
Xceed.Wpf.DataGrid.Converters.CurrencyConverter
Xceed.Wpf.DataGrid.Converters.DateTimeToStringConverter
Xceed.Wpf.DataGrid.Converters.GreaterThanZeroConverter
Xceed.Wpf.DataGrid.Converters.IndexToOddConverter
Xceed.Wpf.DataGrid.Converters.IntAdditionConverter
Xceed.Wpf.DataGrid.Converters.InverseBooleanConverter
System.Windows.Navigation.JournalEntryListConverter
Xceed.Wpf.DataGrid.Converters.LevelToOpacityConverter
Xceed.Wpf.DataGrid.Converters.MultimodalResultConverter
Xceed.Wpf.DataGrid.Converters.NegativeDoubleConverter
Xceed.Wpf.DataGrid.Converters.NullToBooleanConverter
Xceed.Wpf.DataGrid.Converters.SourceDataConverter
Xceed.Wpf.DataGrid.Converters.StringFormatConverter
Xceed.Wpf.DataGrid.Converters.ThicknessConverter
Xceed.Wpf.DataGrid.Converters.TypeToBooleanConverter
Xceed.Wpf.DataGrid.Converters.TypeToVisibilityConverter
Xceed.Wpf.DataGrid.Converters.ValueToMaskedTextConverter
System.Windows.Documents.ZoomPercentageConverter

Derived from IMultiValueConverter

System.Windows.Controls.BorderGapMaskConverter
System.Windows.Navigation.JournalEntryUnifiedViewConverter
System.Windows.Controls.MenuScrollingVisibilityConverter
Microsoft.Windows.Themes.ProgressBarBrushConverter
Microsoft.Windows.Themes.ProgressBarHighlightConverter

Note the Xceed ones (no connection) are available free with their DataGrid. As well as those there's some clever stuff around like the debugging converter. I've also used the last IValueConverter and I'm sure there's some further Lambda function goodness to be found too.