读取文本文件跳过其中包含 TAB 字符的行

Question

你好！我对 C# 完全陌生，需要知道如何逐行读取文件（跳过其中包含制表符的文件）并将文本设置为 RichTextBox！ 我一直在这样做：

DialogResult result = open_dialog.ShowDialog();

if (result == DialogResult.OK)
{
    string file_name = open_dialog.FileName;
    System.IO.StreamReader sr = new System.IO.StreamReader(file_name);
    String data;

    data = sr.ReadToEnd();
    rich_words.Text = data;

    String line;

    using (var file = System.IO.File.OpenText(fileName))
    {
        // read each line, ensuring not null (EOF)
        while ((line = file.ReadLine()) != null)
        {
            if(line.Contains('\t'))
                //do nothing
            else
                richbox.Text=line;
        }
    }
}

但我没有这样做！很伤心，因为我已经尽力了，现在我似乎什么也没做！ 我的样本数据是：

生命体征

                respirations    
           vital signs  
           vital sign checks    
           vital signs/blood pressure   
               blood pressure observation
               blood pressure
               auscultate blood pressures
               monitor blood pressure
               check blood pressure
               blood pressure gauge

监控

           monitor skin color   
           monitor characteristics  
           monitor pulse    
           monitor presence 
           monitor  
           monitor/monitor temperature  
               monitor temperature
               continuous temperature monitoring device

检查

           check body temperature   
           check frequency  
           check pain level 
           special checks   
           check    
           check body temperaturewith   

上面突出显示的文本有制表符，所以我不需要它们。请为此提出任何解决方案。我只需要像标题这样的词：|生命体征| |监视器|和 |检查|等等...有人可以帮我解决这个问题吗？

Answer 1

DialogResult result = open_dialog.ShowDialog();
if (result == DialogResult.OK) {
    StreamReader sr = new StreamReader(open_dialog.FileName);

    StringBuilder() sb = new StringBuilder();

    // Don't set the rich_words.Text = data here because there's no need to.

    string line;
    using (var file = File.OpenText(dialog.FileName)) {
        while ((line == file.ReadLine()) != null) {
            if (!line.Contains('\t')) {
                sb.AppendLine(line);
            }
            // No need to have an else since we only want to do stuff when the line does not contain a tab.
        }
    }

    // Now that you have all of the text from the file into your StringBuilder, you add it as the text in the box.
    rickbox.Text = sb.ToString();
}

您所做的是每次一行不包含制表符时更改文本框中的文本。您正在覆盖所有内容。

Answer 2

krillgar 的回答已经解释了为什么您的示例不起作用，但这里是您的所有代码作为一个衬里，只是为了好玩：

richbox.Text = String.Join(Environment.NewLine, File.ReadAllLines(file).Where(l => !l.Contains("\t")).ToArray());

Answer 3

你可以使用这种方法

if(Char.IsControl(line[0]))
  //do nothing
else
  richbox.Text=line;