Improving WPF Mouse Wheel Processing

using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Windows;

namespace Logitech.ComponentModel
{
  [Serializable]
  public class ObservableObject : INotifyPropertyChanged
  {
    #region INotifyPropertyChanged
    /// <summary>
    /// Raised when a property on this object has a new value.
    /// </summary>
    [field: NonSerialized]
    public event PropertyChangedEventHandler PropertyChanged;
    #endregion

    #region Methods
    /// <summary>
    /// Warns the developer if this object does not have
    /// a public property with the specified name. This 
    /// method does not exist in a Release build.
    /// </summary>
    [Conditional("DEBUG")]
    [DebuggerStepThrough]
    public void VerifyPropertyName(string propertyName)
    {
      if (GetType().GetProperty(propertyName) == null)
      {
        string msg = "Invalid property name: " + propertyName;

        if (this.ThrowOnInvalidPropertyName)
          throw new Exception(msg);
        else
          Debug.Fail(msg);
      }
    }
    #endregion

    #region Overridables
    /// <summary>
    /// Returns whether an exception is thrown, or if a Debug.Fail() is used
    /// when an invalid property name is passed to the VerifyPropertyName method.
    /// The default value is false, but subclasses used by unit tests might 
    /// override this property's getter to return true.
    /// </summary>
    protected virtual bool ThrowOnInvalidPropertyName { get { return false; } }

    protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
    {
      VerifyPropertyName(e.PropertyName);
      if (PropertyChanged != null)
        PropertyChanged(this, e);
    }
    protected virtual void OnPropertyChanged(params string[] propertyNames)
    {
      if (PropertyChanged != null)
        foreach(var propertyName in propertyNames)
          OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
    }
    #endregion
  } 
}