Ado.Net执行SQL时，返回执行状态（进度）

private void button10_Click( object sender, EventArgs e )
{
SqlConnection conn = new SqlConnection("Data Source=.;Initial Catalog=test;User ID=sa;Password=;");
conn.InfoMessage += new SqlInfoMessageEventHandler( conn_InfoMessage );
conn.Open();
//new SqlCommand( "Sp_Test", conn ).ExecuteNonQuery();
new SqlCommand( "raiserror ('第1个消息',1,1);raiserror ('第2个消息',2,1);raiserror ('第3个消息',3,1);", conn ).ExecuteNonQuery();
conn.Close();
}
void conn_InfoMessage( object sender, SqlInfoMessageEventArgs e )
{
System.Console.WriteLine( e.Message );
}

CREATE PROCEDURE [dbo].[Sp_Test]
AS
raiserror ('第1个消息',1,1)
raiserror ('第2个消息',2,1)
raiserror ('第3个消息',3,1)
raiserror ('第4个消息',4,1)
raiserror ('第5个消息',5,1)
GO