如何实现用ID号登录,登录后显示用户名?

请问哪位高手可以教一教我.....急用!
SqlCommand scd = new SqlCommand("select count(*) from SysUser where U_ID='" + this.UID.Text.ToString() + "' and U_PSW='" + this.Userpwd.Text.ToString() + "'", sqlcon);
        int count = Convert.ToInt32(scd.ExecuteScalar());
        if (count > 0)
        {
            Session["U_ID"] = this.UID.Text.ToString();
            this.Panel2.Visible = true;
            this.Panel1.Visible = false;
            this.Label1.Text = Session["U_ID"].ToString();
        }
        else
        {
            Response.Write(this.message("编号或者密码错误"));
        }