我正在努力研究如何在Visual Studio中完成我的应用程序,C#... 应该允许用户打开文本文件并在listBox中显示文本文件的所有单词。 我的应用程序的一部分还有一个textBox和searchButton,因此用户可以在文本文件中搜索特定的单词,然后有一个outputLabel,它应该显示文本文件中单词(textBox中的值)出现的次数
以下是我的searchButton的代码,我不知道从哪里开始。
private void searchButton_Click(object sender, EventArgs e)
{
int totalAmount;
totalAmount = AllWords.Count();
}
如果对您有所帮助,那么她就是我应用程序的其余代码("使用System.IO;"顺便说一下,我的代码也是如此)
namespace P6_File_Reader
{
public partial class ReadingFiles : Form
{
public ReadingFiles()
{
InitializeComponent();
}
List<string> AllWords = new List<string>();
private void openButton_Click(object sender, EventArgs e)
{
OpenFileDialog NewDialogBox = new OpenFileDialog();
// will open open file dialog in the same folder as .exe
NewDialogBox.InitialDirectory = Application.StartupPath;
// filter only .txt files
NewDialogBox.Filter = "Text File | *. txt";
if (NewDialogBox.ShowDialog() == DialogResult.OK)
{
// declare the variables
string Line;
string Title = "", Author = "";
string[] Words;
char[] Delimiters = { ' ', '.', '!', '?', '&', '(', ')',
'-', ',', ':', '"', ';' };
// declare the streamreader variable
StreamReader inputfile;
// to open the file and get the streamreader variable
inputfile = File.OpenText(NewDialogBox.FileName);
// to read the file contents
int count = 0;
while (!inputfile.EndOfStream)
{
//count lines
count++;
// to save the title
Line = inputfile.ReadLine();
if (count == 1) Title = Line;
// to save the author
else if (count == 2) Author = Line;
// else
{
if (Line.Length > 0)
{
Words = Line.Split(Delimiters);
foreach (string word in Words)
if (word.Length > 0) AllWords.Add(word);
}
}
}
// enable searchtextbox AFTER file is opened
this.searchTextBox.Enabled = true;
searchTextBox.Focus();
// close the file
inputfile.Close();
// to display the title & author
titleText.Text = Title + Author;
totalAmount.Text = AllWords.Count.ToString("n3");
wordsListBox.Items.Clear();
int i = 0;
while (i < 500)
{
wordsListBox.Items.Add(AllWords[i]);
i++;
}
}
}
private void DisplayList(List<string> wordsListBox)
{
foreach (string str in wordsListBox)
{
MessageBox.Show(str);
}
}
提前谢谢!
答案 0 :(得分:0)
查找文本中单词出现次数的一种可能方法是计算Regex.Matches返回的成功结果。
假设您有一个文本文件和一个要在此文本中找到的单词:
(最后跟着像GeneratePresignedUrlRequest request = new GeneratePresignedUrlRequest(
myBucket, myKey, HttpMethod.PUT)
.withSSEAlgorithm(SSEAlgorithm.KMS.getAlgorithm());
request.setExpiration(new DateTime().plusMinutes(30).toDate());
request.setContentType("image/jpeg");
URL puturl = s3.generatePresignedUrl(request);
等符号)
.,:)$
这将返回匹配数:
string text = new StreamReader(@"[SomePath]").ReadToEnd();
string word = "[SomeWord]" + @"(?:$|\W)";
这将为您提供文本中找到这些单词的索引位置:
int WordCount = Regex.Matches(text, word).Cast<Match>().Count();
要执行不区分大小写的搜索,请添加List<int> IndexList = Regex.Matches(text, word).Cast<Match>().Select(s => s.Index).ToList();
。
RegexOptions.IgnoreCase
如果这(有些通用)不足以获得您想要的结果,请优化搜索模式。
您可以使用以下方法检查结果,创建匹配列表:
Regex.Matches(text, word, RegexOptions.IgnoreCase)