visualstudio2010-为了能够创建Image类(C#，WPF)的实例，我应该添加什么程序集引用

我创建了一个包含多个类的类库。为了能够创建Image类的实例，我应该添加什么程序集引用？它是在Visual Studio 2010中使用C#创建的WPF应用程序。

如果有人感兴趣，我的代码如下。

提前感谢！安德斯·布兰德鲁德

    /// <summary>
    /// Create an image with certain image address and return it.
    /// </summary>
    /// <param name="imageAddress">Name of image file without jpg ending.</param>
    /// <returns></returns>
    ///<remarks>Adapted code from Microsoft-website</remarks>
    public static BitmapImage CreateAndDisplayImage(string imageAddress)
    {
        // Create Image Element
        Image myImage = new Image();
        myImage.Width = 200;
        // Create source
        BitmapImage myBitmapImage = new BitmapImage();

        myBitmapImage.BeginInit();
        //Image address
        Uri relativeUri = new Uri(IMAGE_DIRECTORY + imageAddress + ".jpg", UriKind.Relative);
        myBitmapImage.UriSource = relativeUri;

        // IMAGE_DIRECTORY + "/"
        // To save significant application memory, set the DecodePixelWidth or  
        // DecodePixelHeight of the BitmapImage value of the image source to the desired 
        // height or width of the rendered image. If you don't do this, the application will 
        // cache the image as though it were rendered as its normal size rather then just 
        // the size that is displayed.
        // Note: In order to preserve aspect ratio, set DecodePixelWidth
        // or DecodePixelHeight but not both.
        myBitmapImage.DecodePixelWidth = 200;
        myBitmapImage.EndInit();
        //set image source
        return myBitmapImage;

}