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Is it possible to split a string into an array of strings and remove sections not between delimiters using String.Split or regex?

I was wanting to split a string with a known delimiter between different parts into an array of strings using a method (e.g. MethodToSplitIntoArray(String toSplit) like in the example below. The values are string values which can have any character except for '{', '}', or ',' so am unable to delimit on any other character. The string can also contain undesired white space at the start and end as the file can be generated from multiple different sources, the desired information will also be inbetween "{" "}" and separated by a comma.
String valueCombined = " {value},{value1},{value2} ";
String[] values = MethodToSplitIntoArray(valueCombined);
foreach(String value in values)
{
//Do something with array
Label.Text += "\r\nString: " + value;
}
Where the label would show:
String: value
String: value1
String: value2
My current implementation of splitting method is below. It splits the values but includes any spaces before the first parenthesis and anything between them.
private String[] MethodToSplitIntoArray(String toSplit)
{
return filesPassed.Split(new string[] { "{", "}" }, StringSplitOptions.RemoveEmptyEntries);
}
I though this would separate out the strings between the curly braces and remove the rest of the string, but my output is:
String:
String: value
String: ,
String: value1
String: ,
String: value2
String:
What am I doing wrong in my split that I'm still getting the string values outside of the parenthesis? Ideally I would like to use regex or String.Split if its possible
For those with similar problems check out DotNet Perls on splitting

Making the assumption that commas are not permitted inside a curly brace pair, and that outside a curly brace pair only commas or whitespace will appear, it seems to me that the most straightforward, easy-to-read way to approach this is to first split on commas, then trim the results of that (to remove whitespace), and then finally to remove the first and last characters (which at that point should only be the curly braces):
valuesCombined.Split(',').Select(s => s.Trim().Substring(1, s.Length - 2)).ToArray();
I believe that including the curly braces in the initial split operation just makes everything harder, and is more likely to break in hard-to-identify ways (i.e. bad data will result in weirder results than if you use something like the above).

Add , to delimeters:
return filesPassed.Split(new char[] { '{', '}', ',' }, StringSplitOptions.RemoveEmptyEntries);

Not sure if you are expecting those spaces in the front and end so added some trimming to prevent empty results for those.
private String[] MethodToSplitIntoArray(String toSplit)
{
return toSplit.Trim().Split(new char[] { '{', '}', ',' }, StringSplitOptions.RemoveEmptyEntries);
}

This might be one of the way to get all the values as u are looking for
String valueCombined = " {value},{value1},{value2} ";
String[] values = valueCombined.Split(new string[] { "},{" }, StringSplitOptions.RemoveEmptyEntries);
int lastVal = values.Count() - 1;
values[0] = values[0].Replace("{", "");
values[lastVal] = values[lastVal].Replace("}", "");
What I did here is that splited the string with "},{" and then removed { from the first array item and } from the last array item.

Try regex and linq.
return Regex.Split(toSplit, "[.{.}.,]").Where(x => !string.IsNullOrWhiteSpace(x)).ToArray();

Though very late but can you try this:
Regex.Split(" { value},{ value1},{ value2};", #"\s*},{\s*|{\s*|},?;?").Where(s => string.IsNullOrWhiteSpace(s) == false).ToArray()

How do I know which delimiter was used when delimiting a string on multiple delimiters? (C#)

I read strings from a file and they come in various styles:
item0 item1 item2
item0,item1,item2
item0_item1_item2
I split them like this:
string[] split_line = line[i].split(new char[] {' ',',','_'});
I change an item (column) and then i stitch the strings back together using string builder.
But now when putting the string back I have to use the right delimiter.
Is it possible to know which delimiter was used when splitting the string?
UPDATE
the caller will pass me the first item so that I only change that line.

Unless you keep track of splitting action (one at the time) you don't.
Otherwise, you could create a regular expression, to catch the item and the delimiter and go from there.

Instead of passing in an array of characters, you can use a Regex to split the string instead. The advantage of doing this, is that you can capture the splitting character. Regex.Split will insert any captures between elements in the array like so:
string[] space = Regex.Split("123 456 789", #"([,_ ])");
// Results in { "123", " ", "456", " ", "789" }
string[] comma = Regex.Split("123,456,789", #"([,_ ])");
// Results in { "123", ",", "456", ",", "789" }
string[] underscore = Regex.Split("123_456_789", #"([,_ ])");
// Results in { "123", "_", "456", "_", "789" }
Then you can edit all items in the array with something like
for (int x = 0; x < space.Length; x += 2)
space[x] = space[x] + "x";
Console.WriteLine(String.Join("", space));
// Will print: 123x 456x 789x
One thing to be wary of when dealing with multiple separators is if there are any lines that have spaces, commas and underscores in them. e.g.
37,hello world,238_3
This code will preserve all the distinct separators but your results might not be expected. e.g. the output of the above would be:
37x,hellox worldx,238x_3x

As I mentioned that the caller passes me the first item so I tried something like this:
// find the right row
if (lines[i].ToLower().StartsWith(rowID))
{
// we have to know which delim was used to split the string since this will be
// used when stitching back the string together.
for (int delim = 0; delim < delims.Length; delim++)
{
// we split the line into an array and then use the array index as our column index
split_line = lines[i].Trim().Split(delims[delim]);
// we found the right delim
if (split_line.Length > 1)
{
delim_used = delims[delim];
break;
}
}
}
basically I iterate each line over the delims and check the resulting array length. If it is > 1 that means that delim worked otherwise skip to next one. I am using split functions property "If this instance does not contain any of the characters in separator, the returned array consists of a single element that contains this instance."

How to parse the numbers from the text and display it in textBox? c#

I have a string with the following text:
:0c4b7fcdffc38322555a9e35c22c9469:Nick:194176015020283762507:
How do I parse the final number? i.e.:
194176015020283762507

You should first use String.Split() to separate the string by the colon (':') separators. Then access the correct element.
var input = ":0c4b7fcdffc38322555a9e35c22c9469:Nick:194176015020283762507:";
var split = input.Split(':');
var final = split[3];
Note that by default, Split() keeps empty entries. You will have one at the beginning and end, because of the initial and ending colons. You could also use:
var split = input.Split(new[] {':'}, StringSplitOptions.RemoveEmptyEntries);
var final = split[2];
which, as the option implies, removes empty entries from the array. So your number would be at index 2 instead of 3.

string str = ":0c4b7fcdffc38322555a9e35c22c9469:Nick:194176015020283762507:";
string num = str.Split(':')[3];

var finalNumber = input.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries)
.Last()
This code will split your input string into strings, separated by : (empty strings are removed from start and end of sequence). And last string is returned, which is your finalNumber.

Regex + Convert line of numbers separated by white space into array

I'm trying to convert a string that contains multiple numbers, where each number is separated by white space, into a double array.
For example, the original string looks like:
originalString = "50 12.2 30 48.1"
I've been using Regex.Split(originalString, #"\s*"), but it's returning an array that looks like:
[50
""
12
"."
2
""
...]
Any help is much appreciated.

Using this instead
originalString.Split(new char[]{'\t', '\n', ' ', '\r'}, StringSplitOptions.RemoveEmptyEntries);
No need to rush RegEx everytime :)

What about string[] myArray = originalString.Split(' ');
I don't see the need for a RegEx here..
If you really want to use a RegEx, use the pattern \s+ instead of \s*.
The * means zero or more, but you want to split on one or more space character.
Working example with a RegEx:
string originalString = "50 12.2 30 48.1";
string[] arr = Regex.Split(originalString, #"\s+");
foreach (string s in arr)
Console.WriteLine(s);

Regex.Split(originalString, #"\s+").Where(s => !string.IsNullOrWhiteSpace(s))
The Where returns an IEnumerable with the null/whitespace filtered out. if you want it as an array still, then just add .ToArray() to that chain of calls.
The + character is necessary because you need a MINIMUM of one to make this a correct match.

I would stick with String.Split, supplying all whitespace characters that you are expecting.
In regular expressions, \s is equivalent to [ \t\r\n] (plus some other characters specific to the flavour in use); we can represent these through a char[]:
string[] nums = originalString.Split(
new char[] { ' ', '\t', '\r', '\n' },
StringSplitOptions.RemoveEmptyEntries);

The default behaviour if you pass null as a separator to String.Split is to split on whitespace. That includes anything that matches the Unicode IsWhiteSpace test. Within the ASCII range that means tab, line feed, vertical tab, form feed, carriage return and space.
Also you can avoid empty fields by passing the RemoveEmptyEntries option.
originalString = "50 12.2 30 48.1";
string[] fields = originalString.Split(null as char[], StringSplitOptions.RemoveEmptyEntries);

How can I parse out some items from a string in c#

I have strings like this:
/Administration/References
/Administration/Menus/Home
etc
Is there an easy way that I can find the 1st, 2nd and 3rd words that appear in these strings and place it into an array. ie. the text between the slashes?

The easiest way in this case is
var words = myString.Split(new[]{'/'}, StringSplitOptions.RemoveEmptyEntries);
This will give you an array of all the words seperated by the slashes.
The StringSplitOptions.RemoveEmptyEntries will make sure that you don't get empty entries, since the string is starting with a / it will give an empty first element in the array. If you have a trailing / it will give a empty last element as well.

string.Split(new char[] { '/' })
See MSDN for more info:
http://msdn.microsoft.com/en-us/library/b873y76a.aspx

I think what you are looking for is the split method on string i.e.
string[] words = yourstring.Split('/');

It will give you a List that contains 1st line, 2nd line and etc. Each list item is an Array of strings that you want to parse.
private List<string[]> ParseText(string text)
{
string[] lines = text.Split(new string[] { System.Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
List<string[]> list = new List<string[]>();
foreach (var item in lines)
{
list.Add(item.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries));
}
return list;
}