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query results into session variable

fwsteal asked
Last Modified: 2011-09-20
how do I put query results into session variable?

protected void btnLogin_Click(object sender, EventArgs e)
        String strUserId = txtbxSiteCode.Text.ToString();
        String strPassword = txtbxPassword.Text.ToString();

        if (ValidateUser(strUserId, strPassword))
            //generate a session variable
            SqlCommand cmd = new SqlCommand("uspGetCIDFKBySiteCode", new SqlConnection(myConn));
            cmd.CommandType = System.Data.CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@SiteCode", strUserId);
            SqlDataReader rdr = cmd.ExecuteReader();
            //something like?
            //Session["CIDFK"] = Convert.ToInt32(CIDFK.fieldvalue);
            //how do I put the value into a session like this?  Session["CIDFK"] = 30; where the cidfk is an interger
            FormsAuthentication.RedirectFromLoginPage(strUserId, false);
            //I read that SqlDataReader would do what you want it to and work great for single table returns.
            //You can store them to session variables and access the elements.
            //how is this achieved?
            Response.Redirect("login.aspx", true);

I'm just not sure how to do it.
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Session["CIDFK"] = CIDFK.fieldvalue.ToString();


how do I determine if the session variable is empty or null?

    protected void Page_Load(object sender, EventArgs e)
        if (Session["CIDFK"] == "")
            Response.Redirect("../default.aspx", true);

        //set the title of the page
        this.Title = SiteConfiguration.SiteName;
        String mystring = Session["CIDFK"].ToString();
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had to do this to get it to work:

        string CIDFK = null;
        /// check for existance of the session variable
        if (Session["CIDFK"] != null)
            CIDFK = Session["CIDFK"].ToString();
        if (CIDFK == null)
            Response.Redirect("../default.aspx", true);

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