精简高效的C#网站优化经验技巧总结

1. 压缩响应数据

压缩响应数据是提高C#网站性能的常用技巧。可以使用Gzip压缩算法来减小响应数据的大小。在IIS上，开启静态压缩和动态压缩可以提高网站的响应速度。代码示例如下：

using System.IO.Compression;

protected void Application_PreRequestHandlerExecute(object sender, EventArgs e)
{
    HttpApplication app = sender as HttpApplication;
    string acceptEncoding = app.Request.Headers["Accept-Encoding"];
    if (acceptEncoding != null)
    {
        acceptEncoding = acceptEncoding.ToLower();
        Stream prevUncompressedStream = app.Response.Filter;
        if (acceptEncoding.Contains("gzip"))
        {
            app.Response.Filter = new GZipStream(prevUncompressedStream, CompressionMode.Compress);
            app.Response.AppendHeader("Content-Encoding", "gzip");
        }
        else if (acceptEncoding.Contains("deflate"))
        {
            app.Response.Filter = new DeflateStream(prevUncompressedStream, CompressionMode.Compress);
            app.Response.AppendHeader("Content-Encoding", "deflate");
        }
    }
    app.Response.AppendHeader("Vary", "Content-Encoding");
}

2. 合并和压缩JavaScript和CSS文件

合并和压缩JavaScript和CSS文件可以减少网页的请求次数，并减小响应数据的大小，从而提高网站性能。可以使用工具如yui compressor或者Google Closure Compiler来实现。代码示例如下：

using System.IO;
using System.Text;

public static string CompressCSS(string css)
{
    CssCompressor compressor = new CssCompressor();
    return compressor.Compress(css);
}

public static string CompressJS(string js)
{
    JavaScriptCompressor compressor = new JavaScriptCompressor();
    return compressor.Compress(js);
}

private void CompressAndCombineFiles(string[] fileNames, string outputFile)
{
    StringBuilder sb = new StringBuilder();
    foreach (string fileName in fileNames)
    {
        sb.Append(File.ReadAllText(fileName));
        sb.Append("\n");
    }
    string content = sb.ToString();
    if (outputFile.EndsWith(".js"))
    {
        content = CompressJS(content);
    }
    else if (outputFile.EndsWith(".css"))
    {
        content = CompressCSS(content);
    }
    File.WriteAllText(outputFile, content);
}

以上是两个提高C#网站性能的示例，通过压缩响应数据和合并、压缩JavaScript和CSS文件，可以大幅提升网站的性能和用户体验。