>>>When I change to the following:
>>>

>>>param.SqlDbType = System.Data.SqlDbType.Decimal;
>>>param.Value = 0.00;  
>>>

>>>
>>>I get compiler error.
>>
>>What?
>
>What I wrote in the other message about "The explicit conversion exists (are you missing a cast?)"


That works for me:

 SqlCommand sql = new SqlCommand();
sql.Parameters.Add("asd");
sql.Parameters[0].SqlDbType = SqlDbType.Decimal;
sql.Parameters[0].Size = 10;
sql.Parameters[0].Value = 0.00;
sql.Parameters[0].Direction = ParameterDirection.InputOutput;