如何在C＃中的逗号和换行符上拆分字符串？

Question

I'm trying to split a string that can come in with either commas or newlines, based on an input from a textarea. I'm not sure of the syntax to split this string in c#. Currently I have:

string[] splitString = inputString.Split(','); //WORKS
//string[] splitString = inputString.Split(new string[] { ",","\r\n","\n" }, StringSplitOptions.None); //DOES NOT WORK

Answer 1

Since some text uses \\r for new line.

You should use the code below and remove the empty entries to make the array cleaner.

string[] splitString = inputString.Split(new string[] { ",", "\r", "\n" }, StringSplitOptions.RemoveEmptyEntries);

or using Regex.Split . (This doesn't remove empty entries.)

String[] splitString = Regex.Split(inputString, "[,\r\n]");

Update

You can also use Regex.Split with empty entries removed, thanks to WiktorStribiżew 's comment.

The code below removes the empty entries which aren't in the beginning or end of the string.

String[] splitString = Regex.Split(inputString, "[,\r\n]+");

To eliminate empty entries showing in the beginning or end of the line, use the code below.

Regex.Split(Regex.Replace(inputString, "^[,\r\n]+|[,\r\n]+$", ""), "[,\r\n]+");

Regular Expression Language

If you want more informations about Regex , or how it works, you can look here for a quick reference.

Answer 2

您可以将Environment.NewLine传递到您的字符串数组中：

string[] splitString = inputString.Split(new string[] { ",", Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);