C#连接Access数据库,登录模块的登录要如何做啊?
我是C#初学者,请各位指教一二

连接数据库我会

问题是如欲验证输入的数据,这个我不会……

还是没有搞明白，哎
好晕了

string path = Application.StartupPath.Substring(0, Application.StartupPath.Substring(0, Application.StartupPath.LastIndexOf("\\")).LastIndexOf("\\"));
            path += @"\1.mdb";
            string constr = "Provider=Microsoft.Jet.OLEDB.4.0;Data source=" + path;
            OleDbConnection conn = new OleDbConnection(constr);
                       conn.Open();
            SqlCommand cmd=new SqlCommand();
             ="select * FROM DB_user where user_id='" + name + "' and password='" + password + "'";
            Int32 count =Convert.ToInt32(cmd.ExecuteScalar());
            if(count>0)
            {
            MessageBox.Show("OK");
            }
            else
            {
            MessageBox.Show("NO");

 Int32 count =Convert.ToInt32(cmd.ExecuteScalar());
怎么老是说这个未初始化呢？不知是何解？