如何通过json Web服务接受参数（包括图像）并将其存储到SQL Server数据库中？

I am getting an error:

我收到一个错误:

Operation 'addUser' in contract 'IService1' has a UriTemplate that expects a parameter named 'PHONE_NO,DP,REG_ID', but there is no input parameter with that name on the operation.Operati