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Listen to Connection state changed event

using System; using System.Data; using System.Data.SqlClient;     class Program     {         static void Main(string[] args)         {             string sqlConnectString = "Data Source=(local);Integrated security=SSPI;Initial Catalog=AdventureWorks;";             SqlConnection connection = new SqlConnection(  );             connection.StateChange += new StateChangeEventHandler(connection_StateChange);             connection.ConnectionString = sqlConnectString +                 "Connection Timeout=15;Connection Lifetime=0;" +                 "Min Pool Size=0;Max Pool Size=100;Pooling=true;";             Console.WriteLine("Connection string = {0}",connection.ConnectionString);             connection.Open();             connection.Close();             connection.ConnectionString = sqlConnectString +                 "Connection Timeout=30;Connection Lifetime=0;" +                 "Min Pool Size=0;Max Pool Size=200;Pooling=true;";             Console.WriteLine("\nConnection string = {0}",connection.ConnectionString);             connection.Open();             connection.Close();         }         static void connection_StateChange(object sender, StateChangeEventArgs e)         {             Console.WriteLine("\tOriginalState = {0}", e.OriginalState.ToString());             Console.WriteLine("\tCurrentState = {0}", e.CurrentState.ToString());         }     }