asp.net 使用HttpModule對接收到的參數值進行修改__.net

配置方法：      <httpModules>
      <add name="FileEditModule" type="Framework.FileEditModule, Framework" />

    </httpModules>

public class FileEditModule : System.Web.IHttpModule    {        public void Dispose() { }        public void Init(HttpApplication application)        {            application.BeginRequest              += new EventHandler(Application_BeginRequest);        }                public void Application_BeginRequest(object sender, EventArgs e)        {            HttpContext context = HttpContext.Current;            HttpRequest request = context.Request;            if (context.Request.HttpMethod != "POST")            {                return;            }            var file = request.InputStream;            StreamReader sr = new StreamReader(file);            string SourceCode2 = sr.ReadToEnd();            file.Seek(0, SeekOrigin.Begin);            string SourceCode = ..修改方法(SourceCode2);            if (SourceCode.Equals(SourceCode2))            {                return;            }            byte[] sourceData = System.Text.Encoding.UTF8.GetBytes(SourceCode);            //((System.Web.HttpInputStream)(file))._data._data            //((System.Web.HttpInputStream)(file))._data{System.Web.HttpRawUploadedContent}System.Web.HttpRawUploadedContent            BindingFlags bind = BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.IgnoreCase | BindingFlags.GetField;            //Assembly systemWeb = Assembly.Load("System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a");            Assembly systemWeb = Assembly.GetAssembly(typeof(HttpRequest));            Type type = systemWeb.GetType("System.Web.HttpInputStream");            FieldInfo method = type.GetField("_data", bind);            var data = method.GetValue(request.InputStream);            var _data = data.GetType().GetField("_data", bind);            var _length = data.GetType().GetField("_length", bind);            var _expectedLength = data.GetType().GetField("_expectedLength", bind);            var _completed = data.GetType().GetField("_completed", bind);            var _dataValue = _data.GetValue(data) as byte[];            //            _data.SetValue(data, sourceData);            _length.SetValue(data, sourceData.Length);            _expectedLength.SetValue(data, sourceData.Length);            _completed.SetValue(data, true);        }    }