本文介绍了在Switch语句中使用.StartsWith?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在处理Switch语句,并且需要使用两个条件来查看值是否以特定值开头。 Switch语句确实是这样。该错误显示无法将类型bool秘密转换为字符串。
I'm working on a Switch statement and with two of the conditions I need to see if the values start with a specific value. The Switch statement does like this. The error says "cannot covert type bool to string".
有人知道我是否可以在Switch中使用StartsWith,还是需要使用If ... Else语句?
Anyone know if I can use the StartsWith in a Switch or do I need to use If...Else statements?
switch(subArea)
{
case "4100":
case "4101":
case "4102":
case "4200":
return "ABC";
case "600A":
return "XWZ";
case subArea.StartsWith("3*"):
case subArea.StartsWith("03*"):
return "123";
default:
return "ABCXYZ123";
}
推荐答案
您要切换 String
和 subArea.StartsWith()
返回 Boolean
,即为什么你做不到。我建议您这样做:
You are switching a String
, and subArea.StartsWith()
returns a Boolean
, that's why you can't do it. I suggest you do it like this:
if (subArea.StartsWith("3*") || subArea.StartsWith("03*"))
return "123";
switch(subArea)
{
case "4100":
case "4101":
case "4102":
case "4200":
return "ABC";
case "600A":
return "XWZ";
default:
return "ABCXYZ123";
}
结果将相同。
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