ADO Database C#

using System;
using System.Data;
using System.Data.SqlClient;
   class SqlExceptionDemo {
      static void Main(){
         string connString = "server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI";
         SqlConnection conn = new SqlConnection(connString);
         SqlCommand cmd = conn.CreateCommand();
         cmd.CommandType = CommandType.StoredProcedure;
         cmd.CommandText = "wrong command";
         try {
            conn.Open();
            cmd.ExecuteNonQuery();
         }  
         catch (System.Data.SqlClient.SqlException ex)
         {
            string str;
            str = "Source:"+ ex.Source;        
            str += "\n"+ "Number:"+ ex.Number.ToString();
            str += "\n"+ "Message:"+ ex.Message;
            str += "\n"+ "Class:"+ ex.Class.ToString ();
            str += "\n"+ "Procedure:"+ ex.Procedure.ToString();
            str += "\n"+ "Line Number:"+ex.LineNumber.ToString();
            str += "\n"+ "Server:"+ ex.Server.ToString();
        
            Console.WriteLine (str, "Database Exception");
         }
         catch (System.Exception ex)
         {
            string str;
            str = "Source:"+ ex.Source;
            str += "\n"+ "Error Message:"+ ex.Message;
            Console.WriteLine (str, "General Exception");
         }
         finally
         {
            if (conn.State == ConnectionState.Open)
            {
               Console.WriteLine ("Finally block closing the connection", "Finally");
               conn.Close();
            }        
         } 
      }
   }