我需要在“使用”中添加什么才能让我的代码运行？

Question

I am looking at some code for using a hub with signalr, C#, and asp.net. There are red squigglies under:

public override Task OnConnected()

public override System.Threading.Tasks.Task OnDisconnected()

return base.OnDisconnected();  

What do I need to include as using to get the code to run?

These have been added already:

using System.Linq;  
using System.Web;  
using Microsoft.AspNet.SignalR;

There are red squigglies under the words:

Task OnConnected() and 
OnDisconnected().

Answer 1

If you are trying to overload the OnConnected and OnDisconnected methods of the Hub, you will need to fill in the actual method.

public override Task OnConnected()
{
   // your code here
   return base.OnConnected();
}

public override Task OnDisconnected()
{
   // your code here
   return base.OnDisconnected();
}

However, it's debatable whether you actually want to do this at all. It's more than likely you don't need this code and it can be completely omitted.

Answer 2

If those are all of your using statements then you are probably also missing System.Threading.Tasks . Although with so little information it could be anything. Typically Visual Studio will indicate to you what you need to do to make the red squiggles go away. If not then it may be a missing or broken Nuget package or an inconsistency in framework versions.

Good luck my dude.