how to count word c#

I think if it is required to count the words accurately, then it is better to list the characters separating the words and use Matches method of Regex and then find out the number of words using the Count property of MatchesCollection found as shown below:

using System.Text.RegularExpressions;
void Main()
{
    string groupOfWords = @"It's a text for counting of words, with different word "+
                           "boundaries and hyphenated word like the all-clear.Is it OK? ";
    var matchesByListedChars = Regex.Matches(groupOfWords,
            @"[^\s.?,]+", RegexOptions.CultureInvariant | RegexOptions.Multiline
            | RegexOptions.IgnoreCase);
    Console.WriteLine ("Word count by listed chars = {0}",
                                    matchesByListedChars.Count);
    var matchesByAlphaNumeric= Regex.Matches(groupOfWords,
            @"[\w]+", RegexOptions.CultureInvariant | RegexOptions.Multiline
            | RegexOptions.IgnoreCase);
    Console.WriteLine ("Word count by alpha numeric pattern: {0}",
                                    matchesByAlphaNumeric.Count);
}
//Output
//Word count by listed chars = 20
//Word count by alpha numeric pattern: 22
//as It's and all-clear are counted as two words each

Use the following :

int count = inputstring.Split(' ').Length;

its pretty simple

//if u r considering only spaces.
int WordCount=1;
foreach(char i in s)
{
 foreach (char i in s)
{
if (char.IsWhiteSpace(i))
WordCount++;
}
}

but words can be separated by spaces,comma,punctuation etc.
so in this case,create a string which contains all word separaters
eg:string Separators=",. \'\"?!";//there are more. add it in any order

now replace

if (char.IsWhiteSpace(i))
WordCount++;

by

if (Separators.Contains(i))
WordCount++;

Print out WordCount at last to get number of words.

this would be the simplest solution :D

how to count number of words in a string using c#,Click and get Sample code here
C# Word count | Chars count | Line count in string-SmartSnipp[]

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Text.RegularExpressions;

namespace WordCounter
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();      
        }

        private void button1_Click(object sender, EventArgs e)
        {
            StartCount();
        }

        private void StartCount()
        {
            lblChar.Text = "";
            lblWord.Text = "";
            lblLine.Text = "";

            if (txtUserInput.Text != "")
            {
                string useInput = "";
                useInput = txtUserInput.Text.Trim();             

                string pattern = "[^\\w]";
                string input = useInput;

                //word count             
                int i = 0, count = 0;

               string[] words = Regex.Split(input, pattern, RegexOptions.IgnoreCase);
                for (i = words.GetLowerBound(0); i <=words.GetUpperBound(0); i++)
                {
                    if (words[i].ToString() == string.Empty)
                        count = count - 1;
                    count = count + 1;
                }
                lblWord.Text = count.ToString();

                // line count            
                string[] lines = Regex.Split(useInput.Trim(), "\r\n");                
                lblLine.Text = lines.Length.ToString();

                //char count 
                int CharCount = 0;
                foreach (string value in lines)                
                    CharCount += value.Length;
              
                lblChar.Text = CharCount.ToString();  
            }
        }
    }
}