CODEWITHSUNDEEP
asp.netentity-frameworkc#-4.0entity-framework-4.1
Mahdi jokar
Mahdi jokar

Reputation: 1267

Use Httpcontext in data Access Layer

I treid to use HttpContext in dataAceess layer but i cant creat a object from HttpContext 

 HttpContext httpContext = HttpContext.Current;

I creat a web application and a libery project and i want to use HttpContext in libery project like this :

public static Context GetContextPerRequest()
   {

       HttpContext httpContext = HttpContext.Current;
       if (httpContext == null)
       {
           return new Context();
       }
       else
       {
           int contextId = Thread.CurrentContext.ContextID;
           int hashCode = httpContext.GetHashCode();
           string key = string.Concat(hashCode, contextId);

           Context context = httpContext.Items[key] as Context;
           if (context == null)
           {
               context = new Context();
               httpContext.Items[key] = context;
           }

           return context;
       }
   }

I use .net 4.

Upvotes: 2

Views: 2369

Answers (3)

Mahdi jokar
Mahdi jokar

Reputation: 1267

I solve my problem in this way :

  1. Add reference to system.web
  2. Using system.web; in my data Access layer
  3. make a object from GetContextPerRequest() in Method consractor

Upvotes: -1

Ladislav Mrnka
Ladislav Mrnka

Reputation: 364249

I'm not sure what is your question but your code shows some very bad concepts.

What do you expect this will do?

int contextId = Thread.CurrentContext.ContextID;
int hashCode = httpContext.GetHashCode();
string key = string.Concat(hashCode, contextId);

Context context = httpContext.Items[key] as Context;
if (context == null)
{
    context = new Context();
    httpContext.Items[key] = context;
}

HttpContext is your safe storage for HTTP request processing in ASP.NET. HttpContext.Current returns unique instance for every request and this instance is independent on thread processing the request - even in asynchronous processing the HttpContext will flow with your request from thread to thread but you will never have two threads working on the same request (unless you try to spawn your own threads). If you try to spawn your own threads you cannot use this way at all because HttpContext instance exists only until the request is processed but your custom thread lifetime can be longer.

So the code you are using is just overcomplicated version of this:

Context context = httpContext.Items["Context"] as Context;
if (context == null)
{
    context = new Context();
    httpContext.Items["Context"] = context;
}

Also if this code is from your data access layer it is wrong desing. Data access layer deals with data access and should be independent on upper processing - including HTTP request processing. It means that your GetContextPerRequest method doesn't belong to data access layer.

Upvotes: 1

Damith
Damith

Reputation: 63065

you can parse HttpContext.Current from presentation layer and change your method as below. if you need to find a way to access current http context this link will help you. 

   public static Context GetContextPerRequest(HttpContext httpContext)
   {
      ------
      ------
   }

Upvotes: 3

Related Questions