使用 C# 使用字符数组修剪字符串
当您在字符串对象上使用 Trim() 方法时，您可以向其传递一个字符数组，它将从字符串中删除这些字符，例如
string strDOB = "1975-12-23 ";
MessageBox.Show(strDOB.Substring(2).Trim("- ".ToCharArray()));
：是“75-12-23”而不是预期的结果：“751223”，这是为什么？
奖励问题： 与这一行相比，哪一个会产生更多的开销（它的作用完全相同）：
strDOB.Substring(2).Trim().Replace("-", "");
When you use the Trim() method on a string object, you can pass an array of characters to it and it will remove those characters from your string, e.g:
string strDOB = "1975-12-23 ";
MessageBox.Show(strDOB.Substring(2).Trim("- ".ToCharArray()));
This results is "75-12-23" instead of the expected result: "751223", why is this?
Bonus question:
Which one would have more overhead compared to this line (it does exactly the same thing):
strDOB.Substring(2).Trim().Replace("-", "");
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因为trim函数只修剪字符串末尾的字符。
如果您想在各处消除它们，请使用替换...
Cause the trim function only trims characters from the ends of the string.
use Replace if you want to eliminate them everywhere...
来自 MSDN：
我想这是不言自明的。
From MSDN:
I guess that's self-explanatory.
Trim仅删除字符串开头和结尾的字符。内部“-”字符不会被删除，就像内部空格一样。您需要Replace()。Trimonly removes characters from the beginning and end of the string. Internal '-' characters will not be removed, any more than internal whitespace would. You wantReplace().其他人已经正确回答了 Trim 只修剪字符串开头和结尾的字符。使用：-
这假定原始字符串具有固定格式。至于性能，除非你要做一百万次这样的事情，否则我不会担心。
Others have answered correctly Trim only trims characters from the start and end of the string. Use:-
This assumes a fixed format in the original string. As to performance, unless you are doing a million of these I wouldn't worry about it.
修剪仅从开始和结束处删除。如果您想从字符串中删除，请使用替换。
Trim removes only from start and end. Use Replace if u want to remove from within the string.