C# Split String and Remove Empty String

String.Split(), empty strings and method deleting specified characters

string.Split() method:

" ".Split(); will result in an array with 2 string.Empty items as there is nothing (empty) on either side of the space character.

" something".Split(); and "something ".Split(); will result in an array with two items, that one of them is an empty string, and actually one side of the space character is empty.

"a  b".Split(); //double space in between

The first space has a on the left side and an empty string on the right side (the right side is empty because there is another delimiter right after), the second space, has an empty string on the left side and b on the right side. so the result will be:

{"a","","","b"}

How can I remove empty string from an array of string in C#?

You can use LINQ to filter out the empty entires:

using System.Linq;
...

string[] uorsList = uors.Split(';');
var filtered = uorsList.Where(s=> !string.IsNullOrWhiteSpace(s)).ToArray();

EDIT:

As pointed out in comments, when using string.Split the following is a better option as the empty entries will never make it into the array:

string[] uorsList = uors.Split(new[] { ";" }, StringSplitOptions.RemoveEmptyEntries);

Splitting a string on a space and removing empty entries

string[] elements = templine.Split(space).Where((s, i) => i != 1).ToArray();

C#: splitting a string and not returning empty string

String.Split takes an array when including any StringSplitOptions:

string[] batchstring = batch_idTextBox.Text.Split(new [] { ';' }, StringSplitOptions.RemoveEmptyEntries);

If you don't need options, the syntax becomes easier:

string[] batchstring = batch_idTextBox.Text.Split(';');

Getting rid of null/empty string values in a C# array

Try this:

yourString.Split(new string[] {";"}, StringSplitOptions.RemoveEmptyEntries);

Split string to array, remove empty spaces

Add .Replace(" ","")

String tmp = @"abc 123 ""Edk k3"" String;";
var tmpList = tmp.Split(new[] { '"' }).SelectMany((s, i) =>
{
    if (i % 2 == 1) return new[] { s.Replace(" ", "") };
    return s.Split(new[] { ' ', ';' }, StringSplitOptions.RemoveEmptyEntries);
}).ToList();

How to remove only last empty element from array after spliting in c#

You can use TrimEnd method to remove whitespaces from end on the String instance before calling Split:

string input = "1,2,3, ,4, , ";
input.TrimEnd()
   .Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);

Output Array:

["1"," ","2","3"," ","4"," "] 

See DEMO Fiddle here

Split a comma separated string while removing whitespace and empty entries

Using Trim with StringSplitOptions.RemoveEmptyEntries doesn't work because " " isn't considered an empty entry. You need to do a normal split, then trim each item, then filter out the empty strings.

valueString.Split(',')
    .Select(x => x.Trim())
    .Where(x => !string.IsNullOrWhiteSpace(x))
    .ToArray();

C# Regex.Split: Removing empty results

Regex lineSplitter = new Regex(@"[\s*\*]*\|[\s*\*]*");
var columns = lineSplitter.Split(data).Where(s => s != String.Empty);

or you could simply do:

string[] columns = data.Split(new char[] {'|'}, StringSplitOptions.RemoveEmptyEntries);
foreach (string c in columns) this.textBox1.Text += "[" + c.Trim(' ', '*') + "] " + "\r\n";

And no, there is no option to remove empty entries for RegEx.Split as is for String.Split.

You can also use matches.

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