我有2个数据库，它们之间具有关系，我想更新其中一个。 我想我也应该更新另一个，我只是不知道如何。

能帮我吗？

[WebMethod]
public void UpdateUserDetails(User u,string username)
{

    string sql = "UPDATE [Users] SET [username] = '" + u.username +"',[Ufname] = '" + u.Fname + "',[Ulname] = '" + u.Lname + "',[Upass] = '" + u.Password + "',[Uemail] = '" + u.Email + "',[Uaddress] = '" + u.Address + "',[Ucity] = '" + u.City + "',[Ustate] = '" + u.State + "',[Urating] = '" + u.Rating + "',[Upic] = '" + u.Picture + "',[Uzip] = '" + u.Zipcode + "',[Uphone] = '" + u.Phone + "' WHERE [username] = '" + username + "'";

    OleDbCommand cmd = new OleDbCommand(sql);
    Connect.Takeaction(cmd,Getdbpath());
}

这是错误。

public static void Takeaction(OleDbCommand cmd,string path) 
{
    ConnectMe(path);

    cmd.Connection = my_con;

    my_con.Open();

    cmd.ExecuteNonQuery();

    my_con.Close();
}

这是我服务中的更新功能。

{{1}}

我在connect类中使用的函数。