How to trim whitespace between characters

Question

How to remove whitespaces between characters in c#?

Trim() can be used to remove the empty spaces at the beginning of the string as well as at the end. For example " C Sharp ".Trim() results "C Sharp".

But how to make the string into CSharp? We can remove the space using a for or a for each loop along with a temporary variable. But is there any built in method in C#(.Net framework 3.5) to do this like Trim()?

Answer 1

You could use String.Replace method

string str = "C Sharp";
str = str.Replace(" ", "");

or if you want to remove all whitespace characters (space, tabs, line breaks...)

string str = "C Sharp";
str = Regex.Replace(str, @"\s", "");

Answer 2

If you want to keep one space between every word. You can do it this way as well:

string.Join(" ", inputText.Split(new char[0], StringSplitOptions.RemoveEmptyEntries).ToList().Select(x => x.Trim()));

Answer 3

Use String.Replace to replace all white space with nothing.

eg

string newString = myString.Replace(" ", "");

Answer 4

if you want to remove all spaces in one word:

input.Trim().Replace(" ","")

And If you want to remove extra spaces in the sentence, you should use below:

input.Trim().Replace(" +","")

the regex " +", would check if there is one ore more following space characters in the text and replace them with one space.

Answer 5

If you want to keep one space between every word. this should do it..

 public static string TrimSpacesBetweenString(string s)
    {
        var mystring  =s.RemoveTandNs().Split(new string[] {" "}, StringSplitOptions.None);
        string result = string.Empty;
        foreach (var mstr in mystring)
        {
            var ss = mstr.Trim();
            if (!string.IsNullOrEmpty(ss))
            {
                result = result + ss+" ";
            }
        }
        return result.Trim();

    }

it will remove the string in between the string so if the input is

var s ="c           sharp";
result will be "c sharp";

Answer 6

var str="  c sharp  "; str = str.Trim();
        str = Regex.Replace(str, @"\s+", " ");  ///"c sharp"

Answer 7

I found this method great for doing things like building a class that utilizes a calculated property to take lets say a "productName" and stripping the whitespace out to create a URL that will equal an image that uses the productname with no spaces. For instance:

    namespace XXX.Models
    {
        public class Product
        {
            public int ProductID { get; set; }
            public string ProductName { get; set; }
            public string ProductDescription { get; set; }

            public string ProductImage
            {
                get { return ProductName.Replace(" ", string.Empty) + ".jpg"; }
            }
        }
    }

So in this answer I have used a very similar method as w69rdy, but used it in an example, plus I used string.Empty instead of "". And although after .Net 2.0 there is no difference, I find it much easier to read and understand for others who might need to read my code. I also prefer this because I sometimes get lost in all the quotes I might have in a code block.

Answer 8

//Remove spaces from a string just using substring method and a for loop 
static void Main(string[] args)
{
    string businessName;
    string newBusinessName = "";
    int i;

    Write("Enter a business name >>> ");
    businessName = ReadLine();

    for(i = 0; i < businessName.Length; i++)
    {
        if (businessName.Substring(i, 1) != " ")
        {
            newBusinessName += businessName.Substring(i, 1);
        }
    } 

    WriteLine("A cool web site name could be www.{0}.com", newBusinessName);
}

Answer 9

Aditional Answer:

To remove two or more consecutive spaces from a string, you can use regular expressions

string originalString = "This   is    a   string  with  multiple  spaces.";
string modifiedString = Regex.Replace(originalString, @"\s{2,}", " ");

and Output:

This is a string with multiple spaces.

Answer 10

string myString = "C Sharp".Replace(" ", "");