Azure.Data.Tables - CreateTableIfNotExists throws System.NullReferenceException: 'Object reference not set to an instance of an object.'

Hello, I am just writing some sample code to test the Azure.Data.Tables functionality and right away I ran into an exception.

Code is rather simple:

var serviceClient = new TableServiceClient(new Uri("<some uri>"), new TableSharedKeyCredential("<some account name>", "<some key>"));

            string tableName = "TESTDATES";
            TableItem table = serviceClient.CreateTableIfNotExists(tableName);

            var tc = serviceClient.GetTableClient(tableName);

The first iteration, when table does not exists, it runs fine. Subsequent iterations, when table already exists, it throws an excpetion in the CreateTableIfNotExists() line.

Exceptions details: System.NullReferenceException HResult=0x80004003 Message=Object reference not set to an instance of an object. Source=Azure.Core StackTrace: at Azure.Response1.op_Implicit(Response1 response) at ConsoleApp_TestingDatesInAzure.Program.Main(String[] args) in

There is no inner exception.

Thanks Herald

[christothes]

I looked at this again and I realized that the issue is related to the implicit cast for Response<T>. The workaround for this is to either use var for the response type, or explicitly Response<TableItem>

I’ll look into a viable fix for this as well.

related to #25528

[pakrym]

Can we synthesize an instance of TableItem and return it instead of null? It has only the Name property that we have. The T in Response<T> is defined as non-nullable and multiple customers have hit this issue.