Unable to resolve service for type`***` while attempting to activatre `***`
出現上圖那樣的情況 一般是沒有在Startup類中的ConfigureServices中注入接口和實現類 注入一個就ok ...
原文：Unable to resolve service for type的問題
今天寫了一個方法和接口，需要將接口通過依賴注入的方式注入到Controller里面，但是卻出現了InvalidOperationException: Unable to resolve service for type WebAPI.Services.IPropertyCheckerService while attempting to activate WebAPI.Controllers.Co ...
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