我可以在没有Web服务的情况下从C＃桌面应用程序连接到Sharepoint上的SQL Server数据库吗？

Question

I have created a desktop application in C# with an SQL Server database that holds my departments quotations. We now have a Sharepoint site and I will have to store this data there so that my coworkers abroad can use this app and add, query data themselves. I am familiar with reading data from web services using JSON, but not sure if creating a web service is necessary for an application to connect to a database stored on a server. Do I simply build an HTTP request with credentials to the Sharepoint site, then add the directory folder to the header and query the database?

Answer 1

First, you or your dba need to backup/restore your desktop app's database to the same instance SharePoint is connected to. If you don't want to migrate existing data, create a new database using the same schema.

Next you'll want to create a sql user account that you can use in your connection string. Update your desktop app's connection string to use the new sql instance, username, and password.

Answer 2

No, you don't need to create a service to access a database on a server. What you are actually asking is how to read from (write to) database on C#. As I understand you already have an access to the database (user account with granted access and password). You will need to use ADO.NET - it's a technology for data access.

You will utilize SqlConnection, SqlDataReader and SqlCommand classes. check for example this example: Reading values from SQL database in C#

There is a newer technology from Microsoft called Entity Framework. It provides better solution for working with databases. Use it if you need to work with many tables and complicated queries.