My best guess to localize this string would be to interpret the exception itself and re-create the message (did not check the code-compilation, may have some errors, typos):
public void Editor_InputValidationError(Object sender, InputValidationErrorEventArgs e)
{
var outOfRange = e.Exception as ArgumentOutOfRangeException;
if(outOfRange.ParamName == "Maximum")
// Localize the error message
System.Windows.MessageBox.Show("this_is_the_localized_string");
//...same for Minimum...
}