Introduction

It is possible to create a client side Google Web Toolkits (GWT) project (which is in JavaScript) and access this from within a C# .NET project. There are two things you need to understand.

1)      You can embed any custom JavaScript into a .NET Web page and this can then be invoked

2)      You will need to fully manage the rendering of the webpage yourself (using standard web call backs). You cannot rely on any built in post back mechanism in .NET

3)      You must know how to communicate with the Google Web Toolkit part of the project

Please note, in the discussions below, the key elements of a working project have been extracted to give you a reasonable idea of how to proceed yourself. It is possible the code will not compile without some modifications.

Visual Studio (Server) side

The key element of the Visual Studio project is to have two web pages for each web application. The first page is used to render the application and the second (background) page is used to communicate with the application. In other topics, these pages are called

·         Default.Aspx

·         Response.Aspx

Note in this web site there is only one master web application which is used to start all the other web applications. This means we only need to use the two web pages mentioned above. The master web application is called the Application Selector. It is a normal application just like the other ones.

Optimise Loading Time

Most modern browsers support receiving input as compressed ‘GZip’ format. There is a useful function that allows you to easily embed this concept into your Visual Studio pages. This is particularly valuable when sending data to the client from the server. The following code is taken from this web site. It works, so just paste it into your project.

http://csharpfeeds.com/post/5518/HttpWebRequest_and_GZip_Http_Responses.aspx

private bool IsGZipSupported(Page page) {     string AcceptEncoding = page.Request.Headers["Accept-Encoding"];     if (!string.IsNullOrEmpty(AcceptEncoding) &&          (AcceptEncoding.Contains("gzip") || AcceptEncoding.Contains("deflate")))         return true;     return false; } private void GZipEncodePage(Page page) {     if (IsGZipSupported(page))     {         string AcceptEncoding = page.Request.Headers["Accept-Encoding"];         if (AcceptEncoding.Contains("gzip"))         {             page.Response.Filter = new System.IO.Compression.GZipStream(page.Response.Filter,                                       System.IO.Compression.CompressionMode.Compress);             page.Response.AppendHeader("Content-Encoding", "gzip");         }         else         {             page.Response.Filter = new System.IO.Compression.DeflateStream(page.Response.Filter,                                       System.IO.Compression.CompressionMode.Compress);             page.Response.AppendHeader("Content-Encoding", "deflate");         }     } }