Proxy Pattern
According to Proxy Pattern, if you want to be allowed to provide an interface to other objects by creating a wrapper class as the proxy then this pattern can be used.
Proxy Pattern Example
Here is an example of Proxy Pattern.
// Subject Interface
public interface IImageEditor
{
void DrawImage();
}
// Real Subject
class ImageEditor : IImageEditor
{
public void DrawImage()
{
Console.WriteLine("Draw() of ImageEditor has been called!");
}
}
// Proxy
class ImageEditorProxy : IImageEditor
{
private ImageEditor _realSubject;
public void DrawImage()
{
// Here Lazy Intialization has been used
if (_realSubject == null)
{
_realSubject = new ImageEditor();
}
_realSubject.DrawImage();
}
}
class Program
{
static void Main(string[] args)
{
ImageEditorProxy proxy = new ImageEditorProxy();
proxy.DrawImage();
Console.ReadKey();
}
}
Proxy Pattern Output
