Rounding Up

I have the following code that retreives the current value of the item price. however it always rounds up. If I manually enter a return value like so:
return (decimal)12.47
It returns the correct value, however if I set it with an expression like this:
return(decimal)arParam[1].Value;
It rounds the number up: How can I get it to not round up when insertign a value based ona expression?

publicdecimal GetCreditPrice(string CustomerSecurityKey)

{

try

{

System.Data.SqlClient.SqlParameter prmCrnt;

System.Data.SqlClient.SqlParameter[] arParam =new System.Data.SqlClient.SqlParameter[2];

prmCrnt =new System.Data.SqlClient.SqlParameter("@.CustomerSecurityKey", SqlDbType.VarChar,25);

prmCrnt.Value = CustomerSecurityKey;

arParam[0] = prmCrnt;

prmCrnt =new System.Data.SqlClient.SqlParameter("@.Price", SqlDbType.Decimal);

prmCrnt.Direction = ParameterDirection.Output;

arParam[1] = prmCrnt;

SqlHelper.ExecuteNonQuery(stConnection, CommandType.StoredProcedure, "GetCreditPrice", arParam);

return(decimal)arParam[1].Value;

}

catch(System.Exception ex)

{

throw ex;

}

}

Try the link I posted in this post for custom String Formatting. Hope this helps.
http://forums.asp.net/887067/ShowPost.aspx