類型 'System.Configuration.ConfigurationException' 的未處理例外狀況發生於 microsoft.practices.enterpriselibrary.configuration.dll其他資訊: Invalid section name. The section 'dataConfiguration' does not exist in the requested configuration file 'C:\Documents and Settings\mis31\My Documents\Visual Studio Projects\ConsoleApplication1\ConsoleApplication1\bin\Debug\ConsoleApplication1.exe.config' or the file 'c:\winnt\microsoft.net\framework\v1.1.4322\Config\machine.config'. Make sure that the 'enterpriseLibrary.configurationSections' configuration section exists in one of the files and that the section 'dataConfiguration' is defined.這是怎么回事情
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