如何删除字符串中的最后一个部分

I have a dynamic generated string as /directory/folder/filename.html

我有一个动态生成的字符串as /directory/folder/filename.html

How can i remove the last part i.e /filename.html.

如何删除最后一部分i。e / filename.html。

I want my output as /directory/folder/.

我希望输出为/directory/folder/。

3 个解决方案

#1

Use the Path.GetDirectoryName method in System.IO:

使用的路径。GetDirectoryName方法先:

string path = "/directory/folder/filename.html";
path = Path.GetDirectoryName(path);

This may change the path seperator to the system default. If you want to preserve the slashes, use the following instead:

这可能会改变路径seperator到系统默认值。如果你想保存斜杠，可以使用以下文字:

path = path.Substring(0, path.LastIndexOf('/'));

#2

You can use substring without using IO classes/method.

您可以使用子字符串而不用IO类/方法。

string str = "/directory/folder/filename.html";
int endIndex = str.LastIndexOf("/");
endIndex = endIndex !=-1 ? endIndex : 0;
result = str.Substring(0,endIndex);

#3

If you want only the path part use

如果您只想使用路径部分

string result = Path.GetDirectoryName(inputName);

If you want the filename and not the path

如果您想要文件名而不是路径

string result = Path.GetFileName(inputName);

Also I see that you use the forward slash. The methods above will give in output a folder separator correct for your operating system (forward or back slashes)

我还看到你用了正斜线。上面的方法将为您的操作系统(向前或向后斜杠)输出一个文件夹分隔符。

#1