如何按空格分割数据

Question

I have data in a text:

WS 6
WH 11
WD 6
WC 8
WN 9

NS 7
NH 2
ND 6
NC 5

NN 4
ES 6
EH 11
ED 6
EC 8
EN 9

and I want to split them to a string array like:

string[0] array=
"W S 6
W H 11
W D 6
W C 8
W N 9";

string[0] array=
"N S 7
N H 2
N D 6
N C 5";

string[0] array=
"N N 4
E S 6
E H 11
E D 6
E C 8
E N 9";

I had been do:

using(StreamReader reader = new StreamReader(uploadedFile.InputStream))
                {

                    string read = reader.ReadToEnd();
                    string[] Array = Regex.Split(read,"\n");
                }

But It cannot done, Pleas help me.

Answer 1

You tried to split by newline ( \\n ). You need to split by space:

using(StreamReader reader = new StreamReader(uploadedFile.InputStream))
{
     string read = reader.ReadToEnd();
     string[] Array = Regex.Split(read," ");
}

Or even better by whitespace (space, tab, ...)

string[] Array = Regex.Split(read,"\s");

Answer 2

您可以使用它在换行符上拆分文本。

string[] array = read.Split(new string[] { "\r\n", "\n" }, StringSplitOptions.None);

Answer 3

You need to split with double line break:

var read = "W S 6\r\nW H 11\r\nW D 6\r\nW C 8\r\nW N 9\r\n\r\nN S 7\r\nN H 2\r\nN D 6\r\nN C 5\r\n\r\nN N 4\r\nE S 6\r\nE H 11\r\nE D 6\r\nE C 8\r\nE N 9";
var arr = read.Split(new[] {"\r\n\r\n", "\n\n"}, StringSplitOptions.RemoveEmptyEntries);
Console.Write(string.Join("\n-- NEXT ITEM ----\n", arr));

See the C# demo

Output:

W S 6
W H 11
W D 6
W C 8
W N 9
-- NEXT ITEM ----
N S 7
N H 2
N D 6
N C 5
-- NEXT ITEM ----
N N 4
E S 6
E H 11
E D 6
E C 8
E N 9

Note that if your line breaks are not consistent, you will have to add all possible variations to the first Split argument.

Or use a Regex.Split :

var arr = Regex.Split(read, @"(?:\r\n?|\n){3,}").Where(m => !string.IsNullOrEmpty(m));

See another C# demo .

Here, (?:\\r\\n?|\\n){3,} matches 3 or more ( {3,} is a limiting quantifier) line breaks: CR followed with an optional LF ( \\r\\n? ) or ( | ) an LF ( \\n ).

See a regex demo here .