C# Bug解決——InvalidCastException: Cannot cast from source type to destination type.
InvalidCastException: Cannot cast from source type to destination type. 不能從源類型轉換爲目標類型。 這個問題的原因主要是類型轉換出錯了，其中一個不易察覺的情況是將父類強制轉換爲子類的時候出錯，也就是在多態時向下轉型可能出錯 什麼是多態：父類的指針指向子類，調用子類的方法 先給大家看一下我的代碼問題出在哪裏，供與大家參考 可以
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相關文章
- 1. Type mismatch: cannot convert from element type Object to String 解決辦法
- 2. Type safety: Unchecked cast from Object to ArrayList
- 3. Convert from type X to type Y
- 4. Cannot determine value type from string 'xxxxxx'
- 5. Type mismatch: cannot convert from Enumeration to Enumeration
- 6. cannot convert (type interface {}) to type int: need type assertion
- 7. cannot convert ‘a’ (type ‘int’) to type ‘int&&’
- 8. Type mismatch cannot convert from Test to Annotation
- 9. - String cannot be resolved to a type - The method getServerName() from the type ServletRequest
- 10. Type mismatch: cannot convert from javax.servlet.http.Cookie[] to org.apache.tomcat.util.http.parser