private TextControlSelection GetSelection()
{
var selection =
AttachedFrameworkElement.GetValue <TextSelection>("Selection",
BindingFlags.NonPublic | BindingFlags.Instance);
var textRangeType = selection.GetType().GetInterfaces().FirstOrDefault(x => x.Name == "ITextRange");
var startTextPointer = textRangeType.GetValue <object>(selection, "Start");
var endEndTextPointer = textRangeType.GetValue <object>(selection, "End");
var start = startTextPointer.GetValue <int>("Offset", BindingFlags.Instance | BindingFlags.NonPublic);
var end = endEndTextPointer.GetValue <int>("Offset", BindingFlags.Instance | BindingFlags.NonPublic);
return(new TextControlSelection
{
Start = start,
End = end
});
}
