Cannot convert string to IEnumerable

Question

I need to convert string to IEnumerable<string> by every newline character.

I just want the same functionality as File.ReadLines without loading any file, rather taking it from a previously loaded string.

@canton7 Actually `.Split(Environment.NewLine, StringSplitOptions.None)` would be a better choice. — juharr, Jul 02 '21 at 15:06
@juharr Actually, it depends on the requirements. Who's to say their string has line endings which match `Environment.NewLine`? — canton7, Jul 02 '21 at 15:07
If you want *identical* behaviour to `File.ReadLines` (i.e., it auto-determines the line endings), use `var reader = new StringReader("someString")`, then call `reader.ReadLine()` until it returns `null`. — canton7, Jul 02 '21 at 15:09
@canton7 Yeah, actually to get the same as `File.ReadLine` it has to split on `\n` or `\r` or the combination of `\r\n` — juharr, Jul 02 '21 at 15:10

score 0 · Answer 1 · answered Jul 02 '21 at 15:05

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You could split it according to the newline character:

String[] lines = fileContenets.Split('\n');

answered Jul 02 '21 at 15:05

Mureinik

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score 0 · Accepted Answer · answered Jul 02 '21 at 15:05

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String.Split can split your string and give you string[]

Usage

string someString = ...;
string[] lines = someString.Split('\n');
IEnumerable<string> linesAsEnumerable = lines;

DoSomethingWithLines(linesAsEnumerable);

answered Jul 02 '21 at 15:05

JL0PD

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Or even better `IEnumerable lines = someString.Split(Environment.NewLine);`. – Alejandro Jul 02 '21 at 15:06
@Alejandro It has to be `Split(Environment.NewLine, StringSplitOptions.None)` because `Environment.NewLine` is a `string` and there is no override of `Split` that just takes a single `string` argument. – juharr Jul 02 '21 at 15:07
@Alejandro, yes, but I've created `string[]` variable to show actual return type. `IEnumerable` slower to process than raw array – JL0PD Jul 02 '21 at 15:10
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@Alejandro The question specifically specified the newline character, not the OS's new line character sequence. Given that they're not reading a file, there's no reason to assume the OS's new line string is what that string uses. – Servy Jul 02 '21 at 15:11

Cannot convert string to IEnumerable

2 Answers2