Loop through all errors : SqlException « ADO.Net « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. ADO.Net
3. SqlException

using System;
using System.Data;
using System.Data.SqlClient;

class MainClass
{
   static void Main()
   {
         SqlConnection conn = new SqlConnection(@"data source = .\sqlexpress;integrated security = true;database = northwnd");

         SqlCommand cmd = conn.CreateCommand();
         cmd.CommandType = CommandType.StoredProcedure;
         cmd.CommandText = "error command";

         try
         {
            conn.Open();
            cmd.ExecuteNonQuery();
         }
         catch (System.Data.SqlClient.SqlException ex)
         {
            for (int i = 0; i < ex.Errors.Count; i++)
            {
                 Console.WriteLine("Index #" + i);
                 Console.WriteLine("Exception: " + ex.Errors[i].ToString() );
                 Console.WriteLine("Number: " + ex.Errors[i].Number.ToString() );
            }
         }
         catch (System.Exception ex)
         {
            Console.WriteLine("Source: " + ex.Source);
            Console.WriteLine("Exception Message: " + ex.Message);
         }
         finally
         {
            if (conn.State == ConnectionState.Open)
            {
               Console.WriteLine("Finally block closing the connection");
               conn.Close();
            }
         }
   }
}

Index #0
Exception: System.Data.SqlClient.SqlError: Cannot open database "northwnd" requested by the login. T
he login failed.
Number: 4060
Index #1
Exception: System.Data.SqlClient.SqlError: Login failed for user 'JAVA2S\Joe'.
Number: 18456