从URI获取页面名称，两个字符之间的子串

Question

I want to get the page name from a URI for instance if I have

"/Pages/Alarm/AlarmClockPage.xaml"

I want to get AlarmClockPage

I tried

//usage GetSubstring("/", ".", "/Pages/Alarm/AlarmClockPage.xaml")
 public static string GetSubstring(string a, string b, string c)
 {  
     string str = c.Substring((c.IndexOf(a) + a.Length),
          (c.IndexOf(b) - c.IndexOf(a) - a.Length));

     return str;
 }

But because the string being search may contain one or more forward slashes, I don't think this method work in such case.

So how do I consider the multiple forward slashes that may present?

Answer 1

你为什么不使用已经在框架中的方法？

System.IO.Path.GetFileNameWithoutExtension(@"/Pages/Alarm/AlarmClockPage.xaml");

Answer 2

If you only want to use string functions, you may try:

var startIdx = pathString.LastIndexOf(@"/");
var endIdx = pathString.LastIndexOf(".");
if(endIdx!=-1)
{
    fileName = pathString.Substring(startIdx,endIdx);
}
else
{
    fileName = pathString.Substring(startIdx);
}

Answer 3

It gives file name from a given file path. try this

string pageName = System.IO.Path.GetFileName(@"/Pages/Alarm/AlarmClockPage.xaml");