C # added Configuration; Can't find the ConfigurationManager after this class, then I found that: although reference using System. The Configuration; This package, but still won't do,
Finally, to find a solution is found in the solution explorer class file selection "reference", then right-click to choose "add reference", and from the.net found in System. The Configuration and it go OK!

CodePudding user response:

to reference, is it not to existing this package

CodePudding user response:

Forward ...

CodePudding user response:

It is found in the code modify other colleagues, the reason is not add references, to check, record, so easy to find in the future,