Create Session on Login page using C# and redirect it to next page also expire session

1. Create 2 Web form pages named: Login , named: Secondpage
2. Now create two text boxes and one Login button
3. on Button click event of Login page add this code: 
4.  if (TextBox1.Text == "abc" && TextBox2.Text == "abc")
               {
                   Session["login"] = TextBox1.Text;
                   Session["password"] = TextBox2.Text;
                   Response.Redirect("Secondpage.aspx");// redirect page to Secondpage.aspx
5. Now on Secondpage Page_Load event add below code
6. if (Session["Login"] != null && Session["password"]!=null)
               {
                   Response.Write(Session["login"].ToString());
                   Response.Write(Session["password"].ToString());
               }
               else
               {
                   Response.Write("Session has expired");
               }
7. To expire session add below code into Web.config. Session will be expired after 1 minute
8. <sessionState mode="InProc" cookieless="false" timeout="1" />

Save Exceptions into Sql Database using C#

1. Create  Database named: ExceptionDatabase into sql an than create ExceptionDetails Table in it
2. Create a new class named: Exceptionfunction and add below function in it
3.  public static void connecttion(Exception exdb)
           {
               SqlConnection con = new SqlConnection();
               con.ConnectionString = @"Data Source=MCS000009-PC\SQL;Initial Catalog=ExceptionDatabase; Trusted_Connection=True;";
   
               string query1 = "insert into ExceptionDetails (ExceptionMsg,ExceptionType)   values( '" + exdb.Message.ToString() + "',  '" + exdb.GetType().Name.ToString() + "')";
               SqlCommand cmd1 = new SqlCommand(query1, con);
               con.Open();
               cmd1.ExecuteNonQuery();
               con.Close();
           }
4. Now create a new Webform and add text boxes and a button
5. On buttom click add function to do Sum of two integers from textboxes
6. protected void Button1_Click(object sender, EventArgs e)
           {
               try
               {
                   int a = Convert.ToInt32(TextBox1.Text);
                   int b = Convert.ToInt32(TextBox2.Text);
                   int c = a + b;
                   Response.Write(c);
               }
               catch (Exception ex)
               {
                   ExceptionFunction.connecttion(ex);
               }}
7. In catch add call function of Exceptionfunction class.

Connect to Sql Database using C#

SqlConnection con = new SqlConnection();
con.ConnectionString = @"Data Source=MCS000009-PC\SQL;
InitialCatalog=ExceptionDatabase; Trusted_Connection=True;";

 string query1 = "insert into ExceptionsTb(MSg,Type)  
values( '" + exdb.Message.ToString() + "',  '" + exdb.GetType().Name.ToString() + "')";
 SqlCommand cmd1 = new SqlCommand(query1, con);
  con.Open();
  cmd1.ExecuteNonQuery();
  con.Close();