Argument Null Exception while cloud service is on IIS

Question

I have created a cloud service, with MVC Web Role which is working fine on my Local machine, but when i host it on IIS 8, it gives an exception: Value cannot be null. Parameter name: connectionString . The lines on which it is giving the error are as follows

CloudStorageAccount storageAccount = CloudStorageAccount.Parse(
    CloudConfigurationManager.GetSetting("DefaultConnectionString"));

Its my company's project, so i won't be able to post any more lines of Code. Hope that you will understand. The method on calling which exception is raised is accessing Azure Table Storage. It is located in a class library project in the same solution. Any help is appreciated.

Answer 1

You have to change the value in your project's app.config file (look in the solution explorer for the file). It should be in the section and be something like:

<add key="DefaultConnectionString" value="some_long_string">

Azure uses different values for local testing and deployment to the cloud, for deployment you need the value that belongs to your company's Azure Storage account.

Or try

using System.Configuration; ... CloudStorageAccount storageAccount = CloudStorageAccount.Parse( ConfigurationManager.ConnectionStrings["StorageConnectionString"].ConnectionString); to read the value from app.config without using the CloudConfigurationManager.