string 删除字符串的最后一个字符 (VB.NET 2008)
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/4680024/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Remove last character of a string (VB.NET 2008)
提问by aco
I am trying to remove a last character of a string. This last character is a newline (System.Environment.NewLine).
我正在尝试删除字符串的最后一个字符。最后一个字符是换行符 (System.Environment.NewLine)。
I have tried some things, but I can not remove it.
我尝试了一些东西，但我无法删除它。
Example:
例子：
myString.Remove(sFP.Length - 1)
Example 2:
示例 2：
myString= Replace(myString, Environment.NewLine, "", myString.Length - 1)
How I can do it?
我该怎么做？
回答by Mehrdad Afshari
If your newline is CR LF, it's actually two consecutive characters. Try your Removecall with Length - 2.
如果你的换行符是 CR LF，它实际上是两个连续的字符。试试你的Remove电话Length - 2。
If you want to remove all "\n" and "\r" characters at the end of string, try calling TrimEnd, passing the characters:
如果要删除字符串末尾的所有 "\n" 和 "\r" 字符，请尝试调用TrimEnd，传递字符：
str.TrimEnd(vbCr, vbLf)
To remove all the whitespace characters (newlines, tabs, spaces, ...) just call TrimEndwithout passing anything.
要删除所有空白字符（换行符、制表符、空格等），只需调用TrimEnd而不传递任何内容。
回答by Tim Schmelter
Dim str As String = "Test" & vbCrLf
str = str.Substring(0, str.Length - vbCrLf.Length)
the same with Environment.NewLine instead of vbCrlf:
与 Environment.NewLine 而不是 vbCrlf 相同：
str = "Test" & Environment.NewLine
str = str.Substring(0, str.Length - Environment.NewLine.Length)
Btw, the difference is: Environment.NewLine is platform-specific(f.e. returns other string in other OS)
顺便说一句，不同之处在于：Environment.NewLine 是特定于平台的（fe 返回其他操作系统中的其他字符串）
Your remove-approach didn't work because you didn't assign the return value of this function to your original string reference:
您的remove-approach 不起作用，因为您没有将此函数的返回值分配给原始字符串引用：
str = str.Remove(str.Length - Environment.NewLine.Length)
or if you want to replace all NewLines:
或者如果你想替换所有的 NewLines：
str = str.Replace(Environment.NewLine, String.Empty)
回答by Jay Ponkia
Use:
用：
Dim str As String
str = "cars,cars,cars"
str = str.Remove(str.LastIndexOf(","))
