如何在不使用数组的情况下仅拆分一个字符串

Question

I've a string 01-India . I want to split on '-' and get only the code 01. How can I do this. I'm a .net newbie. Split function returns a array. Since I need only one string, how can this be done. Is there a ingenious way to do it using split only. Or do I've to use substring only?

Answer 1

您可以搜索第一个出现的 - 然后使用方法子字符串来剪切出来。

var result = input.Substring(0, input.IndexOf('-'))

Answer 2

Other possibility is

string xy = "01-India";
string xz = xy.Split('-')[0];

Answer 3

Something like this?

var s = "01-India";
var result = s.SubString(0, s.IndexOf("-"));

Answer 4

string str = "01-India";
string prefix = null;
int pos = str.IndexOf('-');
if (pos != -1)
   prefix = str.SubString(0,pos);

Answer 5

var str = "01-India";
var hyphenIndex = str.IndexOf("-");
var start = str.substring(0, hyphenIndex);

or you can use regular expression if it is a more complicated string pattern.

Answer 6

Since you don't want to use arrays, you could do an IndexOf('-') and then a substring.

string s = "01-India"
int index = s.IndexOf('-');
string code = s.Substring(0, index);

Or, for added fun, you could use String.Remove.

string s = "01-India"
int index = s.IndexOf('-');
string code = s.Remove(index);

Answer 7

string value = "01-India";

string part1 = value.Split('-')[0];