Why does this return null?
//seedDate is set to DateTime.Now; con is initialized and open. Not a problem with that
using (SqlCommand command = new SqlCommand("fn_last_business_date", con))
{
command.CommandType = CommandType.StoredProcedure;
command.Parameters.AddWithValue("@seed_date", seedDate);//@seed_date is the param name
object res = command.ExecuteScalar(); //res is always null
}
But when I call this directly in the DB as follows:
select dbo.fn_last_business_date('8/3/2011 3:01:21 PM')
returns '2011-08-03 15:01:21.000'
which is the result I expect to see when I call it from code
Why, why, why?
Why does everyone insist on the select
syntax?..
using (System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand("calendar.CropTime", c))
{
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@RETURN_VALUE", SqlDbType.DateTime).Direction = ParameterDirection.ReturnValue;
cmd.Parameters.AddWithValue("@d", DateTime.Now);
cmd.ExecuteNonQuery();
textBox1.Text = cmd.Parameters["@RETURN_VALUE"].Value.ToString();
}