When I press back button the pages goes back after login

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SQL-Server-2008R2

C#

protected void btn_login_Click(object sender, EventArgs e)
        {
            string UserName = TextBox_user_name.Text.Trim();
            string Password = TextBox_password.Text.Trim();
            SqlConnection con = new SqlConnection(strConnString);

            con.Open();
            str = "Select UserName,Password from  Login";
            com = new SqlCommand(str);
            sqlda = new SqlDataAdapter(com.CommandText, con);
            dt = new DataTable();
            sqlda.Fill(dt);
            RowCount = dt.Rows.Count;
            for (int i = 0; i < RowCount; i++)
            {
                UserName = dt.Rows[i]["UserName"].ToString();
                Password = dt.Rows[i]["Password"].ToString();
                if (UserName == TextBox_user_name.Text && Password == TextBox_password.Text)
                {
                    Session["UserName"] = UserName;
                    Response.Redirect("~/Admin/Dashbord.aspx");
                }
                else
                {
                    lb1.Text = "Invalid User Name or Password! Please try again!";
                }
            }
        }

Here my problem is when I login The page goes to /Admin/Dashbord.aspx but when I press The Back button the the page goes back to Login.aspx.
My Second problem is When I put the URL of the pages i.e.~/Admin/Dashbord.aspx then also the page opens how to stop these two problems

Posted 7-Apr-15 18:27pm

Member 11111143

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DamithSL · Answer 1 · 2015-04-07T18:42:00

solution is depend on what is your requirements on those cases. for example in case of back button click in dashboard you need to reload it back to dashboard what you can do is, in the login page page_load event you can check the Session["UserName"] and if it is exist then redirect to dashboard page.

to restrict direct access to Dashboard page you can check Session["UserName"] in page_load event of Dashboard page and if it is not exist then redirect user to login page.

C#

protected void Page_Load(object sender, EventArgs e)
{
    if(Session["UserName"] ==null)
    {
       Response.Redirect("~/Login.aspx"); // give correct url
    }
}