直接new一个 HttpContextBase _HttpContext= new HttpContextWrapper(System.Web.HttpContext.Current);…

今天在对项目代码进行异步化改进的时候,遇到一个奇怪的问题(莫笑,以前没遇过),正如标题一样,HttpContext.Current 在 await 异步执行之后,就会变为 null. 演示代码: public async Task<IEnumerable<string>> Get() { await DoWaitAsync(); DoWork(); return new string[] { "value1", "value2" }; } p…

HttpContext = (context == null ? new HttpContextWrapper(System.Web.HttpContext.Current) : context);…

Why is HttpContext.Current null during the Session_End event? On Session_End there is no communication necessarily involved with the browser so there is no HttpContext to refer to which explains why it is null. Looking at your code you seem to be int…

摘要 HttpContext上下文并不是无处不在的.详情可以看下Fish Li的文章,解释的比较清楚. HttpContext.Current并非无处不在 问题复现 public async Task<ActionResult> Home() { return await Task.Factory.StartNew(() => { var context = System.Web.HttpContext.Current; System.Web.HttpContext context2 =…

public static HttpContext Current { get { if (instance.Value == null) { instance = new ThreadLocal<HttpContext>(() => new HttpContext()); } return (HttpContext)instance.Value; } } protected static ThreadLocal<HttpContext> instance;…

HttpContext context1 = System.Web.HttpContext.Current; HttpContext context2 = System.Runtime.Remoting.Messaging.CallContext.HostContext as HttpContext;  //当前(请求)线程上下文 bool isEqual = object.ReferenceEquals(context1, context2); Response.Write("context1…

问题一:多线程下获取文件绝对路径 当我们使用HttpContext.Current.Server.MapPath(strPath)获取绝对路径时HttpContext.Current为null,解决办法如下:       ///          /// 获得当前绝对路径         ///          /// 指定的路径         /// 绝对路径         public static string GetMapPath(string strPath)         {…

问题一:多线程下获取文件绝对路径 当我们使用HttpContext.Current.Server.MapPath(strPath)获取绝对路径时HttpContext.Current为null,解决办法如下:       ///          /// 获得当前绝对路径         ///          /// 指定的路径         /// 绝对路径         public static string GetMapPath(string strPath)         {…

HttpContext.Current.Server.MapPath(logFile)   这个是得到具体路径的方法  正常情况下是可以的 多线程情况下就为null 下边的代码原本的作用是把网站的异常错误信息写入log.txt中 这里抽出部分代码是我测试System.Timers.Timer的 把网站的异常错误信息写入log.txt的原代码在这里:http://www.cnblogs.com/0banana0/archive/2012/05/04/2483246.html public stat…