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using System; using System.Data; using System.Data.SqlClient; class CommandExampleNonQuery { static void Main() { SqlConnection thisConnection = new SqlConnection("server=(local)SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI"); SqlCommand selectCommand = new SqlCommand("SELECT COUNT(*) FROM Employee", thisConnection); SqlCommand nonqueryCommand = thisConnection.CreateCommand(); try { thisConnection.Open(); Console.WriteLine("Before INSERT: Number of Employee is: {0}", selectCommand.ExecuteScalar()); nonqueryCommand.CommandText = "INSERT INTO Employee (Firstname, Lastname) VALUES ('Z', 'Z')"; Console.WriteLine(nonqueryCommand.CommandText); Console.WriteLine("Number of Rows Affected is: {0}",nonqueryCommand.ExecuteNonQuery()); Console.WriteLine("After INSERT: Number of Employee is: {0}", selectCommand.ExecuteScalar()); nonqueryCommand.CommandText = "DELETE FROM Employee WHERE Firstname='Z' AND Lastname='Z'"; Console.WriteLine(nonqueryCommand.CommandText); Console.WriteLine("Number of Rows Affected is: {0}", nonqueryCommand.ExecuteNonQuery()); Console.WriteLine("After DELETE: Number of Employee is: {0}", selectCommand.ExecuteScalar()); } catch (SqlException ex) { Console.WriteLine(ex.ToString()); } finally { thisConnection.Close(); Console.WriteLine("Connection Closed."); } } } |