SQL caching authentication in SharePoint Web Application

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.SharePoint.Portal;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using Our.SSO;
using Microsoft.SharePoint.Utilities;
using System.Web;
using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
 
namespace ADOTest
{
    public class ADOTesting : System.Web.UI.Page
    {
        protected Button btnDemo;
        private SPWeb _myTeamSite;
        protected TextBox txtUpdate;
        protected TextBox txtDelete;
 
        protected override void OnPreInit(EventArgs e)
        {
            base.OnPreInit(e);
            string pageName = Page.AppRelativeVirtualPath.Substring(
                 Page.AppRelativeVirtualPath.LastIndexOf('/') + 1);
 
            _myTeamSite = SPControl.GetContextWeb(Context);
            MasterPageFile = _myTeamSite.MasterUrl;
 
        }
 
        protected void onSelectClick(object sender, EventArgs e)
        {
            if (SSOValidation.UseSSO())
            {
                SSOUserCredentials cred = SSOUserCredentials.GetUserCredentials(ConfigurationManager.AppSettings["SqlApplicationDefinition"]);
                if (cred != null && cred.NotFoundUrl == null)
                {
                    Response.Write("<br>Before Impersonation Thread UserName " + System.Threading.Thread.CurrentPrincipal.Identity.Name);
                    Response.Write("<br>Before Impersonation  HttpContext UserName " + HttpContext.Current.User.Identity.Name);
                    using (new Impersonator(cred.UserName, cred.Domain, cred.Password, SSOValidation.SqlServerIsLocal() ? LogonType.LOGON32_LOGON_NETWORK : LogonType.LOGON32_LOGON_NEW_CREDENTIALS, LogonProvider.LOGON32_PROVIDER_WINNT50))
                    {
                        Response.Write("SSO UserName " + cred.UserName);
                        Response.Write("<br>Thread UserName " + System.Threading.Thread.CurrentPrincipal.Identity.Name);
                        Response.Write("<br> HttpContext UserName " + HttpContext.Current.User.Identity.Name);
                        SelectSqlTest ();
                    }
                    Response.Write("<br>After Impersonation Thread UserName " + System.Threading.Thread.CurrentPrincipal.Identity.Name);
                    Response.Write("<br>After Impersonation  HttpContext UserName " + HttpContext.Current.User.Identity.Name);
                }
                else if (cred != null && cred.NotFoundUrl != null)
                {
                    SPUtility.Redirect(cred.NotFoundUrl, SPRedirectFlags.UseSource, HttpContext.Current);
                }
            }
            else
            {
                SelectSqlTest();
            }
        }
 
        protected void onInsertClick(object sender, EventArgs e)
        {
            if (SSOValidation.UseSSO())
            {
                SSOUserCredentials cred = SSOUserCredentials.GetUserCredentials(ConfigurationManager.AppSettings["SqlApplicationDefinition"]);
                if (cred != null && cred.NotFoundUrl == null)
                {
                    using (new Impersonator(cred.UserName, cred.Domain, cred.Password, SSOValidation.SqlServerIsLocal() ? LogonType.LOGON32_LOGON_NETWORK : LogonType.LOGON32_LOGON_NEW_CREDENTIALS, LogonProvider.LOGON32_PROVIDER_WINNT50))
                    {
                        InsertSqlTest ();
                    }
                }
                else if (cred != null && cred.NotFoundUrl != null)
                {
                    SPUtility.Redirect(cred.NotFoundUrl, SPRedirectFlags.UseSource, HttpContext.Current);
                }
            }
            else
            {
                InsertSqlTest();
            }
        }
 
        protected void onUpdateClick(object sender, EventArgs e)
        {
            if (SSOValidation.UseSSO())
            {
                SSOUserCredentials cred = SSOUserCredentials.GetUserCredentials(ConfigurationManager.AppSettings["SqlApplicationDefinition"]);
                if (cred != null && cred.NotFoundUrl == null)
                {
                    using (new Impersonator(cred.UserName, cred.Domain, cred.Password, SSOValidation.SqlServerIsLocal() ? LogonType.LOGON32_LOGON_NETWORK : LogonType.LOGON32_LOGON_NEW_CREDENTIALS, LogonProvider.LOGON32_PROVIDER_WINNT50))
                    {
                        UpdateSqlTest ();
                    }
                }
                else if (cred != null && cred.NotFoundUrl != null)
                {
                    SPUtility.Redirect(cred.NotFoundUrl, SPRedirectFlags.UseSource, HttpContext.Current);
                }
            }
            else
            {
                UpdateSqlTest();
            }
        }
 
        protected void onDeleteClick(object sender, EventArgs e)
        {
            if (SSOValidation.UseSSO())
            {
                SSOUserCredentials cred = SSOUserCredentials.GetUserCredentials(ConfigurationManager.AppSettings["SqlApplicationDefinition"]);
                if (cred != null && cred.NotFoundUrl == null)
                {
                    using (new Impersonator(cred.UserName, cred.Domain, cred.Password, SSOValidation.SqlServerIsLocal() ? LogonType.LOGON32_LOGON_NETWORK : LogonType.LOGON32_LOGON_NEW_CREDENTIALS, LogonProvider.LOGON32_PROVIDER_WINNT50))
                    {
                        DeleteSqlTest ();
                    }
                }
                else if (cred != null && cred.NotFoundUrl != null)
                {
                    SPUtility.Redirect(cred.NotFoundUrl, SPRedirectFlags.UseSource, HttpContext.Current);
                }
            }
            else
            {
                DeleteSqlTest();
            }
        }
 
 
 
        private void SelectSqlTest()
        {
            try
            {
                SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["HillyardCCAPConnectionString"].ToString());
                SqlCommand command = new SqlCommand("select SYSTEM_USER", con);
                con.Open();
                Response.Write("<br>Connection String " + con.ConnectionString);
                SqlDataReader reader = command.ExecuteReader();
 
                while (reader.Read())
                {
                    Response.Write("<p>" + reader[0].ToString() + "</p>");
                }
                con.Close();
            }
            catch (Exception x)
            {
                Response.Write("<p>" + x.Message + "</p>");
            }
        }
 
        private void InsertSqlTest()
        {
            try
            {
                SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["HillyardCCAPConnectionString"].ToString());
 
                string insertStatement = string.Format("INSERT INTO tbl_Users (usrNmSh, usrNm, usrNmMdl, usrIsSys, usrSysUsr, usrPhn1, usrPhn2, usrPhnCls1VldlstID, usrPhnCls2VldlstID, usrEml ) VALUES ( '{0}', '{1}', '{2}', {3}, '{4}', '{5}', '{6}', {7}, {8}, '{9}' )","UserNameShort","UserName","UserNmMDL",0,"InsertedUser","","",0,0,"mail@nuvek");
 
                SqlCommand command = new SqlCommand(insertStatement, con);
                con.Open();
                SqlDataReader reader = command.ExecuteReader();
 
                while (reader.Read())
                {
                    Response.Write("<p>" + reader[0].ToString() + "</p>");
                }
 
                con.Close();
 
            }
            catch (Exception x)
            {
                Response.Write("<p>" + x.Message + "</p>");
            }
        }
 
        private void UpdateSqlTest()
        {
            try
            {
                string updateStatement = string .Format ("UPDATE tbl_Users SET usrNmSh = '{0}', usrNm = '{1}', usrNmMdl = '{2}' WHERE usrID = {3}","UpdatedNameshort","UpdatedName","UpdatedMiddleName",txtUpdate .Text );
                SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["HillyardCCAPConnectionString"].ToString());
                SqlCommand command = new SqlCommand(updateStatement, con);
                con.Open();
                SqlDataReader reader = command.ExecuteReader();
 
                while (reader.Read())
                {
                    Response.Write("<p>" + reader[0].ToString() + "</p>");
                }
 
                con.Close();
 
            }
            catch (Exception x)
            {
                Response.Write("<p>" + x.Message + "</p>");
            }
        }
 
 
 
        private void DeleteSqlTest()
        {
            try
            {
                string deletestatement = string.Format ("UPDATE tbl_Users SET usrDelSts = 1 WHERE [usrID] = {0}", txtDelete.Text);
                SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["HillyardCCAPConnectionString"].ToString());
                SqlCommand command = new SqlCommand(deletestatement, con);
                con.Open();
                SqlDataReader reader = command.ExecuteReader();
 
                while (reader.Read())
                {
                    Response.Write("<p>" + reader[0].ToString() + "</p>");
                }
 
                con.Close();
 
            }
            catch (Exception x)
            {
                Response.Write("<p>" + x.Message + "</p>");
            }
        }
 
 
    }
 
}
 
--------------------------------------------- Impersonator [From Metadata]-----------------------
 
using System;
 
namespace Our.SSO
{
    public class Impersonator : IDisposable
    {
        public Impersonator();
        public Impersonator(string userName, string domainName, string password);
        public Impersonator(string userName, string domainName, string password, LogonType logonType, LogonProvider logonProvider);
 
        public void Dispose();
        public void Impersonate(string userName, string domainName, string password);
        public void Impersonate(string userName, string domainName, string password, LogonType logonType, LogonProvider logonProvider);
    }
}

                                  

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