在一行 C# 中检测一个单词的多个实例

Question

在我构建的文件管理程序中，我有一种查找单词的方法。您输入一个您希望程序查找的词。喜欢 True 或 False。您还可以通过在程序中键入它来为其提供文件路径。

public void searchForWord()
        {
            using (StreamReader fs = File.OpenText(filePath))
            {

                int count = 0; //counts the number of times wordResponse is found.
                int lineNumber = 0;
                while (!fs.EndOfStream)
                {
                    string line = fs.ReadLine();
                    lineNumber++;
                    int position = line.IndexOf(wordSearch);
                    if (position != -1)
                    {
                        count++;
                        Console.WriteLine("Match#{0} line {1}: {2}", count, lineNumber, wordSearch);
                    }
                }
                if (count == 0)
                {
                    Console.WriteLine("your word was not found!");
                }
                else
                {
                    Console.WriteLine("Your word " + "'" + wordSearch + "'" + " was found " + count + " times!");
                }
                Console.WriteLine("Press enter to quit.");
                Console.ReadKey();
            }
        }

该程序可以正常运行，但有一个错误，尽管它可以正常运行。这是我运行使用过的测试文件的一个片段。

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Duis lectus sem, eleifend in enim vel, imperdiet pretium justo. 
Vivamus sit amet arcu sed metus rutrum varius vitae vitae turpis. Quisque aliquet mauris lacus, quis aliquam metus placerat vel. 
Proin eleifend tortor velit, False quis aliquam arcu congue ut. Fusce sed mattis purus, sed vehicula diam. False Nullam in leo sit amet massa pharetra semper et vel diam. 
Sed at dolor aliquam libero bibendum porta.

如果您通读我一直在测试的段落的第三行，它有两组 False 但我的程序只检测到第一组。

如图所示：

Match#1 line 3: False
Match#2 line 7: False
Match#3 line 17: False
Match#4 line 19: False
Match#5 line 24: False
Your word 'False' was found 5 times!

这是我的程序给我的输出。我该如何调整它，使其在一行中考虑一个词的两个或多个实例？

Answer 1

我使用 indexOf 找到的解决方案如下。

public void searchForWord()
        {
            using (StreamReader fs = File.OpenText(filePath))
            {

                int count = 0; //counts the number of times wordResponse is found.
                int lineNumber = 0;
                while (!fs.EndOfStream)
                {
                    string line = fs.ReadLine();
                    lineNumber++;
                    int position = line.IndexOf(wordSearch);
                    int i = 0;
                    while ((i = line.IndexOf(wordSearch, i)) != -1)
                    {
                        i++;
                        if (position != -1)
                        {
                            count++;
                            Console.WriteLine("Match#{0} line {1}: {2}", count, lineNumber, wordSearch);
                        }
                    }

                }
                if (count == 0)
                {
                    Console.WriteLine("your word was not found!");
                }
                else
                {
                    Console.WriteLine("Your word " + "'" + wordSearch + "'" + " was found " + count + " times!");
                }
                Console.WriteLine("Press enter to quit.");
                Console.ReadKey();
            }
        }

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