public string SynchronousData()  
    {  
        ReturnJson Rejson = new ReturnJson();  

　　　　　　　//将WebConfig中的数据库连接name中的值写进来
string connS = ConfigurationManager.ConnectionStrings["name"].ConnectionString;
　　　　　　　using (SqlConnection conn = new SqlConnection(connectionSub))
{
conn.Open();
using (SqlCommand cmd = conn.CreateCommand())
{
try
{
cmd.CommandText = "存储过程名";
cmd.CommandType = CommandType.StoredProcedure;
var ReExcute = cmd.ExecuteNonQuery();
if (ReExcute >= )
{
conn.Close();
Rejson.Code = "";
Rejson.Errmsg = "同步成功";
return ToJson(Rejson);
}
else
{
conn.Close();
Rejson.Code = "";
Rejson.Errmsg = "同步失败";
return ToJson(Rejson);
}
}
catch
{
conn.Close();
Rejson.Code = "";
Rejson.Errmsg = "未知异常";
return ToJson(Rejson);
}
}
}
}

存储过程

Create PROCEDURE [存储过程名]
AS
BEGIN
MERGE INTO 目标数据表名 as T
USING 源数据表名 as S
ON T.[Id] = S.[Id]
WHEN MATCHED
THEN UPDATE SET T.[Name]=S.[Name]
WHEN NOT MATCHED
THEN INSERT VALUES(S.[Name])
WHEN NOT MATCHED BY SOURCE
THEN DELETE;
END