C＃切換貫穿錯誤？

Question

我不知道爲什麼我得到這個以下錯誤：

Control cannot fall through from one case label ('case "h":') to another (CS0163)

僅適用於H和S - 很奇怪。

switch(myChoice) 
{ 
    case "K": 
    case "k": 
     Console.WriteLine("You have chosen the Kanto region"); 
     break; 
    case "O": 
    case "o": 
     Console.WriteLine("You have chosen the Orange Islands"); 
     break; 
    case "J": 
    case "j": 
     Console.WriteLine("You have chosen the Johto region"); 
     break; 
    case "H": 
    case "h": 
     Console.WriteLine("You have chosen the Hoenn region"); 
    case "S": 
    case "s": 
     Console.WriteLine("You have chosen the Sinoh region"); 
    case "U": 
    case "u": 
     Console.WriteLine("You have chosen the Unova region"); 
     break; 
    case "R": 
    case "r": 
     Console.WriteLine("Return"); 
     break; 
    default: 
     Console.WriteLine("{0} is not a valid choice", myChoice); 
     break; 
} 

Answer 1

下通之間的break語句時，case語句沒有身體纔有效。由於您的「h」和「s」案件都有代碼，因此您需要後面的break。

此外，作爲一個建議：你可以在你的switch參數做String.ToUpper()這樣你可以避免檢查小寫和大寫myChoice變種兩者。你switch聲明則變爲：

switch(myChoice.ToUpper()) 
{ 
    case "K": 
     Console.WriteLine("You have chosen the Kanto region"); 
     break; 
    case "O": 
     ... 
} 

Answer 2

你錯過了在S和H的情況下

Answer 3

後break您忘記H和S.

Answer 4

你缺少

break;

聲明...

case "H": 
case "h": 
    Console.WriteLine("You have chosen the Hoenn region"); 
    break; 
case "S": 
case "s": 
    Console.WriteLine("You have chosen the Sinoh region"); 
break; 

Answer 5

你缺少一個break; - 從文檔上開關語句，"Unlike C++, C# does not allow execution to continue from one switch section to the next."

Answer 6

後案 「H」 添加Goto字母 「h」 後案 「S」 添加Goto情況下， 「S」

case "H": 
    goto case "h"; 
case "h": 
    Console.WriteLine("You have chosen the Hoenn region"); 
    break; 
case "S": 
    goto case "s"; 
case "s": 
    Console.WriteLine("You have chosen the Sinoh region"); 
break; 

是的，C＃的goto的回來了！