プロジェクトに EPPlus と OfficeOpenXml の使用を追加しました。ただし、プロジェクトを実行すると、次のエラーと警告が表示されます。
警告 :
The referenced assembly "EPPlus" could not be resolved because it has a dependency on "System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" which is not in the currently targeted framework ".NETFramework,Version=v4.0,Profile=Client". Please remove references to assemblies not in the targeted framework or consider retargeting your project.
エラー:
The type or namespace name 'OfficeOpenXml' could not be found (are you missing a using directive or an assembly reference?)
The type or namespace name 'ExcelPackage' could not be found (are you missing a using directive or an assembly reference?)
誰かがそれを理解するのを手伝ってくれますか?