C# System.Web.HttpContextBase' 不包含带有 Elmah 日志记录的“当前”MVC 4 的定义
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System.Web.HttpContextBase' does not contain a definition for 'Current' MVC 4 with Elmah Logging
提问by neildt
I have a C# ASP.NET MVC 4 project, which is using Elmah for catching any unhandled exceptions. This works great in most situations.
我有一个 C# ASP.NET MVC 4 项目，它使用 Elmah 来捕获任何未处理的异常。这在大多数情况下都很有效。
However I've found that for a controller method that is called using a JQuery Ajax call, I can't get the current Context.
但是我发现对于使用 JQuery Ajax 调用调用的控制器方法，我无法获取当前上下文。
For example in my controller method that returns the JsonResult I have this test code;
例如，在我返回 JsonResult 的控制器方法中，我有这个测试代码；
try
{
throw new Exception("This is a test");
}
catch(Exception e)
{
Elmah.ErrorLog.GetDefault(HttpContext.Current).Log(new Elmah.Error(e));
}
The
这
HttpContext.Current
HttpContext.Current
is causing the following error;
导致以下错误；
'System.Web.HttpContextBase' does not contain a definition for 'Current' and no extension method 'Current' accepting a first argument of type 'System.Web.HttpContextBase' could be found (are you missing a using directive or an assembly reference?)
“System.Web.HttpContextBase”不包含“Current”的定义，并且找不到接受“System.Web.HttpContextBase”类型的第一个参数的扩展方法“Current”（您是否缺少 using 指令或程序集引用？）
How can I get around this problem ?
我怎样才能解决这个问题？
采纳答案by Dinesh
To get a reference to HttpContext.Current you need replace
要获得对 HttpContext.Current 的引用，您需要替换
HttpContext.Current
with
和
System.Web.HttpContext.Current
This is because Controller class defines a property named HttpContext that is defined as
这是因为 Controller 类定义了一个名为 HttpContext 的属性，该属性定义为
public HttpContextBase HttpContext { get; }
HttpContext on Controller class returns HttpContextBase which does not have a Current property.
Controller 类上的 HttpContext 返回没有 Current 属性的 HttpContextBase。
Hence you need to properly resolve the namespace here.
因此，您需要在此处正确解析命名空间。
