C＃和Oracle Number数据类型

Question

I need to read a value from an Oracle database and the field has been declared as Number(38). How can I do this in C# since the Decimal type isn't big enough?

Answer 1

You could call GetString(ordinal) on the data reader, and feed the result to System.Numerics.BigInteger.TryParse() .

Or perhaps you could leave the value in the OracleDecimal datatype, like you received it from ODP.NET. OracleDecimal has functions for almost everything, including math : Mulitply , Round , Exp , and so on.