替代使用子字符串？子串使得在键入时很容易犯重复错误

Question

有没有比使用substring()更简单,更短的方法？我试图减少错误因为在键入LastIndexOf和Length,加上计数器时太容易出错.

string filepath = "c:\folder1\folder2\folder3\file1.jpg";
string file = "";

file = filepath.SubString(
    (filepath.LastIndexOf("\\")+1), 
    (filepath.Length - filepath.LastIndexOf("\\")+1)
);

我想得到这个值"file1.jpg".

谢谢...

Answer 1

是的,使用Path.GetFileName

string filepath = "c:\folder1\folder2\folder3\file1.jpg";
string file = Path.GetFileName(filePath);

基于非路径的记录的另一个选项是使用String.Split函数.

string longString = "The cat jump over the brown fox";
string[] splitString = longString.Split(new char[] {' '}); //Splits the string in to array elements wherever it see a space;
string lastWord = splitString[splitString.Length - 1]; //Could throw a error is the length is less than 1
string lastTwoWords = String.Join(" ", splitString.Skip(splitString.Length - 2)); //Could throw a error if the length is less than 2