Azure Batch blob equivalent of C# FILE.AppendAllText?

Question

Hi,

 

Could you please let me know the Azure Batch Service (Storage Account blob processing) equivalent of C# FILE.AppendAllText?

 

Basically, I have an input file. I need to read it line by line with Stream Reader or Azure Batch Blob equivalent of it. Do transformation. Write the output file to Blob Storage Account. And this should happen line by line in Azure

 

thank you