Question

我能够计算文本框中的字符数。但我不知道如何计算单词的数量并将它们打印成标签。

Answer 1

假设您使用空格区分每个单词，请尝试以下操作： -

int count = YourtextBoxId.Text
                         .Split(new char[] {' '},StringSplitOptions.RemoveEmptyEntries)
                         .Count();

正如@Tim Schmelter建议的那样，如果除了空白区域之外你有不同的分隔符，你可以扩展它： -

int count = YourtextBoxId.Text
               .Split(new char[] {' ','.',':'},StringSplitOptions.RemoveEmptyEntries)
               .Count();

Answer 2

第一点是＆＃34; WORD＆＃34;的定义。你应该在实现代码之前知道它。

因此，如果WORD定义为一系列字母，您可以使用以下代码计算单词数：

public int WordsCount(string text)
{
    if (string.IsNullOrEmpty(text))
    {
        return 0;
    }

    var count = 0;
    var word = false;

    foreach (char symbol in text)
    {
        if (!char.IsLetter(symbol))
        {
            word = false;
            continue;
        }

        if (word)
        {
            continue;
        }

        count++;
        word = true;
    }

    return count;
}

Answer 3

您可以像以下示例一样使用Regex.Matches()：

using System;
using System.Text.RegularExpressions;

class Program
{
    static void Main()
    {
    const string t1 = "To be or not to be, that is the question.";
    Console.WriteLine(WordCounting.CountWords1(t1));
    Console.WriteLine(WordCounting.CountWords2(t1));

    const string t2 = "Mary had a little lamb.";
    Console.WriteLine(WordCounting.CountWords1(t2));
    Console.WriteLine(WordCounting.CountWords2(t2));
    }
}

/// <summary>
/// Contains methods for counting words.
/// </summary>
public static class WordCounting
{
    /// <summary>
    /// Count words with Regex.
    /// </summary>
    public static int CountWords1(string s)
    {
    MatchCollection collection = Regex.Matches(s, @"[\S]+");
    return collection.Count;
    }

    /// <summary>
    /// Count word with loop and character tests.
    /// </summary>
    public static int CountWords2(string s)
    {
    int c = 0;
    for (int i = 1; i < s.Length; i++)
    {
        if (char.IsWhiteSpace(s[i - 1]) == true)
        {
        if (char.IsLetterOrDigit(s[i]) == true ||
            char.IsPunctuation(s[i]))
        {
            c++;
        }
        }
    }
    if (s.Length > 2)
    {
        c++;
    }
    return c;
    }
}

Answer 4

MyTextbox.Text.Split(' ').Count()

Answer 5

您可以尝试使用空格在文本框中拆分字符串。

string[] words = textbox.Text.Split(' '); // <-- Space character
int numberOfWords = words.Length;
label.Text = "Number of words are: " + numberOfWords;

Answer 6

这对我有用..

var noOfWords = Regex.Replace(textBox1.Text, "[^a-zA-Z0-9_]+", " ")
                .Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
                .Length;

如何统计单词数量？

6 个答案: