Oracle数字到C#十进制 [英] Oracle number to C# decimal
问题描述
我知道有几个主题和帖子就这个问题在互联网和我读过他们的(不是每一篇文章,我不得不承认),但没有人没有完全满足我。
I know there are several threads and posts regarding this issue in the internet and I've read them (not every article, I have to admit) but none of them did fully satisfy me.
我的情况:结果
我使用ODP.net(DLL版本2.111.6.0)访问Oracle数据库(版本10 + 11)和一个DataReader检索数据( .NET 3.5,C#)。
My situation:
I'm using ODP.net (dll version 2.111.6.0) to access the Oracle DB (version 10 + 11) and a DataReader to retrieve the data (.NET 3.5, C#).
在出现System.OverflowException(算术运算导致溢出。)<使用此代码的结果/ p>
Using this code results in a 'System.OverflowException (Arithmetic operation resulted in an overflow.)'
decimal.TryParse(oraReader.GetOracleDecimal(0).Value.ToString(),
NumberStyles.Any, null, out parsedOraDecimal)
和中值这一个结果 3, 000000000000000000000000000000000000000000000000000000000E-126
decimal.TryParse(oraReader.GetOracleValue(0).ToString(),
NumberStyles.Any, null, out parsedOraDecimal)
现在我必须找到某种方式检索和正确评价这个值 - 数据库也由这是在我的掌握中的其他应用程序使用,以便改变不会有可能的。
Now I have to find some way to retrieve and evaluate this value properly - the DB is also used from other apps which are out of my control so changes there are not possible.
在我的C#转换的类型从十进制'到'双'的代码也不是一个真正的选择。
Converting the types in my C# code from 'decimal' to 'double' is also not really an option.
任何想法?
谢谢为您提供帮助!
问候,
robert.oh。
Regards, robert.oh.
推荐答案
我刚做了一个类似的问题,并试图改变OracleDataAdapter返回甲骨文特定类型(data_adapter.ReturnProviderSpecificTypes =真正的办法; ),但是这仅仅是一个皮塔饼,你最终铸造OracleStrings回字符串,等等。
I just had a similar issue, and tried the approach of changing the OracleDataAdapter to return Oracle specific types ( data_adapter.ReturnProviderSpecificTypes = true; ), but this is just a PITA, you end up casting OracleStrings back to strings, etc.
在最后我解决它做的精度在SQL语句四舍五入使用Oracle的圆形功能:
In the end I solved it by doing the precision rounding in the SQL statement using Oracle's round function:
SELECT round( myfield, 18 ) FROM mytable
DOTNET然后将愉快地转换成数字为十进制。
Dotnet will then happily convert the figure to a decimal.
这篇关于Oracle数字到C#十进制的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!