在ＡＳＰ．ＮＥＴ中怎样在登陆成功后，重导向另一个页面
private void Page_Load(object sender, System.EventArgs e)
  {
   
   string str="Persist Security Info=false;";
   str+="user id=sa;password=sa;database=bbs;";
   string sql="select * from users where username='"+username.Text+"'";
   SqlConnection conn=new SqlConnection(str);
   SqlCommand cmd=new SqlCommand(sql,conn);
   DataSet ds=new DataSet();
   SqlDataAdapter dr=new SqlDataAdapter(sql,conn);
   dr.Fill(ds,"users");
   if (username.Text.Trim()=="")
   {
    message.Text="请输入你的姓名";
   }
   else
   {
    if (ds.Tables["users"].Rows.Count==0)
    {
     Response.Redirect ("chklogin.aspx");
    }
    else
    {
     message.Text="正确";
    }
   }
  }

private void Page_Load(object sender, System.EventArgs e)
  {
   
   string str="Persist Security Info=false;";
   str+="user id=sa;password=sa;database=bbs;";
   string sql="select * from users where username='"+username.Text+"'";
   SqlConnection conn=new SqlConnection(str);
   SqlCommand cmd=new SqlCommand(sql,conn);
   DataSet ds=new DataSet();
   SqlDataAdapter dr=new SqlDataAdapter(sql,conn);
   dr.Fill(ds,"users");
   if (username.Text.Trim()=="")
   {
    message.Text="请输入你的姓名";
   }
   else
   {
    if (ds.Tables["users"].Rows.Count==0)
    {
     message.Text="出错！"    }
    else
    {
     Response.Redirect ("chklogin.aspx");

    }
   }
  }