C# - 删除与正则表达式匹配的行

发布于 2024-11-25 00:49:32 字数 2353 浏览 1 评论 0原文

我有一些数据..它看起来与此类似:

0423 222222 ADH, TEXTEXT 
0424 1234 ADH,MORE TEXT 
0425 98765 ADH, TEXT 3609 
2000 98765-4 LBL,IUC,PCA,S/N 
0010 99999-27 LBL,IUI,1.0x.25 
9000 12345678 HERE IS MORE, TEXT
9010 123-123 SOMEMORE,TEXT1231
9100 SD178 YAYFOR, TEXT01
9999 90123 HEY:HOW-TO DOTHIS

我想删除以 9 开头的每一个行xxx。现在我尝试使用正则表达式替换该值。这就是我的想法:

output = Regex.Replace(output, @"^9[\d]{3}\s+[\d*\-*\w*]+\s+[\d*\w*\-*\,*\:*\;*\.*\d*\w*]+", "");

然而,这真的很难阅读,而且它实际上并没有删除整行。


代码: 这是我正在使用的代码部分:

        try
        {
            // Resets the formattedTextRichTextBox so multiple files aren't loaded on top of eachother.
            formattedTextRichTextBox.ResetText();

            foreach (string line in File.ReadAllLines(openFile.FileName))
            {
                // Uses regular expressions to find a line that has, digit(s), space(s), digit(s) + letter(s),
                // space(s), digit(s), space(s), any character (up to 25 times).
                Match theMatch = Regex.Match(line, @"^[\.*\d]+\s+[\d\w]+\s+[\d\-\w*]+\s+.{25}");

                if (theMatch.Success)
                {
                    // Stores the matched value in string output.
                    string output = theMatch.Value;

                    // Replaces the text with the required layout.
                    output = Regex.Replace(output, @"^[\.*\d]+\s+", "");
                    //output = Regex.Replace(output, @"^9[\d]{3}\s+[\d*\-*\w*]+\s+[\d*\w*\-*\,*\:*\;*\.*\d*\w*]+", "");
                    output = Regex.Replace(output, @"\s+", " ");

                    // Sets the formattedTextRichTextBox to the string output.
                    formattedTextRichTextBox.AppendText(output);
                    formattedTextRichTextBox.AppendText("\n");
                }
            }
        }

结果: 因此,我希望新数据的格式如下:(删除 9xxx)

0423 222222 ADH, TEXTEXT 
0424 1234 ADH,MORE TEXT 
0425 98765 ADH, TEXT 3609 
2000 98765-4 LBL,IUC,PCA,S/N 
0010 99999-27 LBL,IUI,1.0x.25 

问题:

  • 有没有更简单的方法来解决这个问题?
  • 如果是这样,我可以使用正则表达式来解决这个问题还是必须使用不同的方式?

I have some data.. it looks similar to this:

0423 222222 ADH, TEXTEXT 
0424 1234 ADH,MORE TEXT 
0425 98765 ADH, TEXT 3609 
2000 98765-4 LBL,IUC,PCA,S/N 
0010 99999-27 LBL,IUI,1.0x.25 
9000 12345678 HERE IS MORE, TEXT
9010 123-123 SOMEMORE,TEXT1231
9100 SD178 YAYFOR, TEXT01
9999 90123 HEY:HOW-TO DOTHIS

And I would like to remove each entire line that begins with a 9xxx. Right now I have tried Replacing the value using Regex. Here is what I have for that:

output = Regex.Replace(output, @"^9[\d]{3}\s+[\d*\-*\w*]+\s+[\d*\w*\-*\,*\:*\;*\.*\d*\w*]+", "");

However, this is really hard to read and it actually does not delete the entire line.


CODE:
Here is the section of the code I am using:

        try
        {
            // Resets the formattedTextRichTextBox so multiple files aren't loaded on top of eachother.
            formattedTextRichTextBox.ResetText();

            foreach (string line in File.ReadAllLines(openFile.FileName))
            {
                // Uses regular expressions to find a line that has, digit(s), space(s), digit(s) + letter(s),
                // space(s), digit(s), space(s), any character (up to 25 times).
                Match theMatch = Regex.Match(line, @"^[\.*\d]+\s+[\d\w]+\s+[\d\-\w*]+\s+.{25}");

                if (theMatch.Success)
                {
                    // Stores the matched value in string output.
                    string output = theMatch.Value;

                    // Replaces the text with the required layout.
                    output = Regex.Replace(output, @"^[\.*\d]+\s+", "");
                    //output = Regex.Replace(output, @"^9[\d]{3}\s+[\d*\-*\w*]+\s+[\d*\w*\-*\,*\:*\;*\.*\d*\w*]+", "");
                    output = Regex.Replace(output, @"\s+", " ");

                    // Sets the formattedTextRichTextBox to the string output.
                    formattedTextRichTextBox.AppendText(output);
                    formattedTextRichTextBox.AppendText("\n");
                }
            }
        }

OUTCOME:
So what I would like the new data to look like is in this format (removed 9xxx):

0423 222222 ADH, TEXTEXT 
0424 1234 ADH,MORE TEXT 
0425 98765 ADH, TEXT 3609 
2000 98765-4 LBL,IUC,PCA,S/N 
0010 99999-27 LBL,IUI,1.0x.25 

QUESTIONS:

  • Is there an easier way to go about this?
  • If so, can I use regex to go about this or must I use a different way?

如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。

扫码二维码加入Web技术交流群

发布评论

需要 登录 才能够评论, 你可以免费 注册 一个本站的账号。

评论(4

筑梦 2024-12-02 00:49:32

只需重新编写测试格式的正则表达式,以匹配所有不以 9 开​​头的内容 - 这样,以 9 开​​头的行就不会添加到富文本框中。

Just reformulate the regex that tests your format to match everything that doesn't begin with 9 - that way lines starting with 9 are not added to the rich text box.

深海不蓝 2024-12-02 00:49:32

试试这个(使用 Linq):

//Create a regex to identify lines that start with 9XXX
Regex rgx = new Regex(@"^9\d{3}");
//Below is the linq expression to filter the lines that start with 9XXX
var validLines = 
(
//This following line specifies what enumeration to pick the data from 
from ln in File.ReadAllLines(openFile.FileName)
//This following specifies what is the filter that needs to be applied to select the data. 
where !rgx.IsMatch(ln)
//This following specifies what to select from the filtered data.
select ln;
).ToArray(); //This line makes the IQueryable enumeration to an array of Strings (since variable ln in the above expression is a String)
//Finally join the filtered entries with a \n using String.Join and then append it to the textbox
formattedTextRichTextBox.AppendText = String.Join(validLines, "\n");

Try this(Uses Linq):

//Create a regex to identify lines that start with 9XXX
Regex rgx = new Regex(@"^9\d{3}");
//Below is the linq expression to filter the lines that start with 9XXX
var validLines = 
(
//This following line specifies what enumeration to pick the data from 
from ln in File.ReadAllLines(openFile.FileName)
//This following specifies what is the filter that needs to be applied to select the data. 
where !rgx.IsMatch(ln)
//This following specifies what to select from the filtered data.
select ln;
).ToArray(); //This line makes the IQueryable enumeration to an array of Strings (since variable ln in the above expression is a String)
//Finally join the filtered entries with a \n using String.Join and then append it to the textbox
formattedTextRichTextBox.AppendText = String.Join(validLines, "\n");
梨涡 2024-12-02 00:49:32

是的,有一个更简单的方法。只需使用 Regex.Replace 方法,并提供 Multiline 选项。

Yes, there is a simpler way. Just use Regex.Replace method, and provide Multiline option.

巴黎夜雨 2024-12-02 00:49:32

为什么不只匹配第一个 9xxx 部分,使用通配符来匹配该行的其余部分,这样会更具可读性。

output = Regex.Replace(output, @"^9[\d{3}].*", "")

Why don't you just match the first 9xxx part the use a wildcard to match the rest of the line, it would be a lot more readable.

output = Regex.Replace(output, @"^9[\d{3}].*", "")

~没有更多了~
我们使用 Cookies 和其他技术来定制您的体验包括您的登录状态等。通过阅读我们的 隐私政策 了解更多相关信息。 单击 接受 或继续使用网站,即表示您同意使用 Cookies 和您的相关数据。
原文