无法将Microsoft.Azure.Devices命名空间添加到Azure Function run.csx

Question

I have an Azure Function from which I need to send back messages to my devices through IoT Hub. Every time I try to add the statement:

using Microsoft.Azure.Devices;

I get the below error:

run.csx(11,23): error CS0234: The type or namespace name 'Devices' does not exist in the namespace 'Microsoft.Azure' (are you missing an assembly reference?)

But strangely as the error suggests, if I just go for using Microsoft.Azure , there are no compilation errors.

So I tried using Devices withing my code, like static Devices.ServiceClient client; , but again the same error.

I have also tried using #r "Microsoft.Azure.Devices , but that didn't work either.

I tried creating a new Function App service altogether, but the same error just keeps poping up.

My project.json file looks something like this:

{
  "frameworks": {
    "net47":{
      "dependencies": {
        "Microsoft.Azure.Devices": "1.4.1"
      }
    }
  }
}

I tried using net46 also.

Small decription of my app:

So my function is supposed to be triggered by a ServiceBusTopic , has a BlobStorage as an Input.

No idea how am I going to send my data back to my device now that this namespace does not get added.

Answer 1

The following is a working sample using a Microsoft.Azure.Devices nuget package. The trigger is the ServiceBusQueue and the blobName is an application property of the BrokeredMessage.

run.csx:

using System;
using System.Text;
using System.Configuration;
using System.Threading.Tasks;
using Microsoft.Azure.Devices;

public static async Task Run(string inputMessage, string inputBlob, TraceWriter log)
{
    log.Info($"C# ServiceBus queue trigger function processed message: {inputMessage}");
    log.Info($"Blob:\n{inputBlob}");


    string deviceId = "Device10";
    var c2dmsg = new Microsoft.Azure.Devices.Message(Encoding.ASCII.GetBytes(inputMessage));

    // create proxy
    string connectionString = ConfigurationManager.AppSettings["myIoTHub2"];
    var client = ServiceClient.CreateFromConnectionString(connectionString);

    // send AMQP message
    await client.SendAsync(deviceId, c2dmsg);

    await client.CloseAsync();
}

function.json:

    {
      "bindings": [
      {
        "name": "inputMessage",
        "type": "serviceBusTrigger",
        "direction": "in",
        "queueName": "function",
        "connection": "myServiceBus",
        "accessRights": "Manage"
      },
      {
        "type": "blob",
        "name": "inputBlob",
        "path": "afstates/{Properties.blobName}",
        "connection": "myStorage",
        "direction": "in"
      }
      ],
      "disabled": false
  }

project.json:

{
  "frameworks": {
  "net46":{
    "dependencies": {
      "Microsoft.Azure.Devices": "1.4.1"
      }
    }
  }
}

Try the following steps:

• delete the file project.lock.json
• use the net46 dependencies
• restore the nuget package pressing the save button.

Watch the logs progress.