Question

How to know whether a sql Update statement executed successfully or failed ?

I use sql server 2005 and C# asp.net.

Can I get the successful or failed infomation in C# without adding some sql code into the old sql statement?

Answer 1

You can use the return value of the ExecuteNonQuery to check if the update was successful or not.

SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
        SqlCommand cmd = new SqlCommand("sp_updateData", con);
        cmd.CommandType = CommandType.StoredProcedure;
        SqlParameter p1 = new SqlParameter("@id", SqlDbType.Int);
        p1.Value = 1;
        p1.Direction = ParameterDirection.Input;

        SqlParameter p2 = new SqlParameter("@name", SqlDbType.VarChar,50);
        p2.Value = "sls";
        p2.Direction = ParameterDirection.Input;

        cmd.Parameters.Add(p1);
        cmd.Parameters.Add(p2);

        try
        {
            con.Open();
            //count will be the number of rows updated. will be zero if no rows updated.
            int count = cmd.ExecuteNonQuery();
            if (count > 0)
            {
                Console.WriteLine("Update Success!!!");
            }
            else
            {
                Console.WriteLine("No Updates!!!");
            }
            Console.ReadLine();

        }
        catch (SqlException ex)
        {
            Console.WriteLine("Update Failed coz.. " + ex.Message);
        }
        finally
        {
            con.Close();
        }