从OSX（Mac）上的控制台应用程序访问Azure存储帐户

Question

I am writing code using VS 2017 community edition for Mac and trying to access a Blob on Azure storage account. However, I am running into exceptions as shown in the code below.

The WindowsAzure.Storage version is 9.1.1

using System;
using Microsoft.Azure;
using Microsoft.WindowsAzure.Storage;

namespace storageaccount
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            var storageAccount = CloudStorageAccount.Parse(
                CloudConfigurationManager.GetSetting("StorageConnection"));

            //var blobClient = storageAccount.CreateCloudBlobClient();

            //var container = blobClient.GetContainerReference("images");

               //container.CreateIfNotExists(Microsoft.WindowsAzure.Storage.Blob.BlobContainerPublicAccessType.Blob);

        //Console.ReadKey();
        }
    }
}

Exception thrown from the afore-mentioned code:

System.DllNotFoundException: fusion.dll
  at at (wrapper managed-to-native) Microsoft.Azure.NativeMethods.CreateAssemblyCache(Microsoft.Azure.NativeMethods/IAssemblyCache&,int)
  at Microsoft.Azure.NativeMethods.GetAssemblyPath (System.String name) [0x00037] in <bcbac5dcfbdd47eabe8212983b7d996d>:0
  at Microsoft.Azure.AzureApplicationSettings.GetServiceRuntimeAssembly () [0x0000d] in <bcbac5dcfbdd47eabe8212983b7d996d>:0
  at Microsoft.Azure.AzureApplicationSettings..ctor () [0x0001a] in <bcbac5dcfbdd47eabe8212983b7d996d>:0
  at Microsoft.Azure.CloudConfigurationManager.get_AppSettings () [0x0001e] in <bcbac5dcfbdd47eabe8212983b7d996d>:0
  at Microsoft.Azure.CloudConfigurationManager.GetSetting (System.String name, System.Boolean outputResultsToTrace) [0x00039] in <bcbac5dcfbdd47eabe8212983b7d996d>:0
  at Microsoft.Azure.CloudConfigurationManager.GetSetting (System.String name) [0x00000] in <bcbac5dcfbdd47eabe8212983b7d996d>:0
  at storageaccount.MainClass.Main (System.String[] args) [0x00001] in /Users/Projects/storageaccount/storageaccount/Program.cs:11

---

What's wrong with the code? I am using Nuget package to access cloud storage account. From the exception thrown it is not clear if this is supported on OSx.

Any help is appreciated.

Additional information: I see that there are two project options in VS 2017 (for Mac) while creating a new project. 1. .Net core console app 2. .Net console app (under .Net option) - What does this run against?

Thanks

Answer 1

As you mentioned that Microsoft.WindowsAzure.ConfigurationManager is .net framework package, it is not compatible with .net core platform .

I am still looking for information on how to read app.config for .Net application on Mac

You could use the System.Configuration.ConfigurationManager to do that.

 var storeageString = ConfigurationManager.AppSettings["storagestring"];

App.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <add key="storagestring" value ="Test string"/>
  </appSettings>
</configuration>

Another way is that you could add appsettings.json to a .NET Core console app.

All that's required is to add the following NuGet packages and an appsettings.json file.

• Microsoft.Extensions.Configuration

• Microsoft.Extensions.Configuration.FileExtensions

• Microsoft.Extensions.Configuration.Json

Demo code

var builder = new ConfigurationBuilder()
            .AddJsonFile("appsettings.json");
IConfigurationRoot configuration = builder.Build();
var connectionString = configuration["StorageConnection"];
Console.WriteLine(connectionString);

appsettings.json file:

{
    "StorageConnection": "Test Connection string"
}