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Dynamic/Transparent Proxy using DynamicProxy.NET

, 21 Oct 2003
Learn how easy it is to create Dynamic/Transparent proxies in .NET using DynamicProxy.NET
dynamicproxy.zip
DynamicProxy
bin
Release
DynamicProxy.dll
docs
tutorial.png
tutorial2.png
DynamicProxy.csproj.user
DynamicProxyTest
App.ico
bin
Release
DynamicProxy.dll
DynamicProxyTest.csproj.user
TestClasses
DynamicProxyTest.exe
dynamicproxytutorial.zip
DynamicProxyTutorial
App.ico
bin
Release
DynamicProxy.dll
DynamicProxyTutorial.exe
DynamicProxyTutorial.csproj.user
using System;

namespace DynamicProxyTutorial {
	/// <summary>
	/// Simple factory (also a pattern from GoF) 
	/// that encapsulates the creation of proxies for the IFileViewer interface.
	/// There's no requirement for encapsulting this in a factory,
	/// it's just a good idea to keep this seperate from the usage of the fileviewer
	/// </summary>
	public class FileViewerProxyFactory {

		/// <summary>
		/// Keep the constructor private, to prevent instantiations.
		/// </summary>
		private FileViewerProxyFactory() {
		}

		/// <summary>
		/// Static method to create new proxy instances
		/// </summary>
		/// <param name="filePath">The path to the file we want to view</param>
		/// <param name="allowedUserID">The userid for the user that's allowed to view the file</param>
		/// <param name="useDynamicProxyNET">If true we use DynamicProxy.NET to create a proxy at runtime, else
		/// we use the handwritten FileViewerProxy class</param>
		/// <returns>A new File Viewer proxy instance</returns>
		public static IFileViewer createProxy(string filePath, string allowedUserID, bool useDynamicProxyNET) {
			if (useDynamicProxyNET) {
				return new DynamicFileViewerProxy(filePath, allowedUserID).Proxy;
			} else {
				return new FileViewerProxy(filePath, allowedUserID);
			}
		}
	}
}

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About the Author

SKI_BUM
Web Developer
Denmark Denmark
10 years experience in software design. In my job as a software architect I work with Java and J2EE. .net is so far only a hobby project, but nonetheless interesting Wink | ;-)

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