取出文件內的數值，重新生成一個新的文件

[david0620]

文件(內容)如下，“#”後的是字段，每字段下對應一個數值，如果數值為空就用","隔開。
# FileName,DATE COMPLETED,TIME COMPLETED,SYSTEM ID,FIXTURE ID,FIRMWARE REV,OPERATOR,PROGRAM,DIAGS REV,BIOS REV,UUT REV,TESTING TIME,STATUS,NUM STEPS FAILED,NUM FAILED FACTS,NUM POSTINGS,FAILED STEP PATH,MEASURED,EXPECTED,ETHERNET ADDR,PARTNUM,FACT
1234567890,02-25-2006,00:07:00,WS470-036,,,00022294,,,4.35.20.45.14,,,PASS,,,,,,,+1234,,N/A
2345678901,02-25-2006,00:13:32,WS470-020,,,00022294,,,4.35.20.45.14,,,PASS,,,,,,,+1234,,N/A
3456789012,02-25-2006,00:14:52,WS470-036,,,00022294,,,4.35.20.45.14,,,PASS,,,,,,,+1234,,N/A

如何將此文件內，根據每行的字段重新生成一個新的文件，並用FileName此字段來作為新文件的命名，如1234567890.txt

例：重新生成的新文件應該為:
文件名：1234567890.txt
# FileName,DATE COMPLETED,TIME COMPLETED,SYSTEM ID,FIXTURE ID,FIRMWARE REV,OPERATOR,PROGRAM,DIAGS REV,BIOS REV,UUT REV,TESTING TIME,STATUS,NUM STEPS FAILED,NUM FAILED FACTS,NUM POSTINGS,FAILED STEP PATH,MEASURED,EXPECTED,ETHERNET ADDR,PARTNUM,FACT
1234567890,02-25-2006,00:07:00,WS470-036,,,00022294,,,4.35.20.45.14,,,PASS,,,,,,,+1234,,N/A
文件名：2345678901.txt
# FileName,DATE COMPLETED,TIME COMPLETED,SYSTEM ID,FIXTURE ID,FIRMWARE REV,OPERATOR,PROGRAM,DIAGS REV,BIOS REV,UUT REV,TESTING TIME,STATUS,NUM STEPS FAILED,NUM FAILED FACTS,NUM POSTINGS,FAILED STEP PATH,MEASURED,EXPECTED,ETHERNET ADDR,PARTNUM,FACT
2345678901,02-25-2006,00:13:32,WS470-020,,,00022294,,,4.35.20.45.14,,,PASS,,,,,,,+1234,,N/A

用winform來實現？

[smntbk]

private void button1_Click(object sender, EventArgs e)
        {
            StreamReader reader = new StreamReader(@"E:\test.txt");//test.txt:原始文件
            string headText = reader.ReadLine();
            while (!reader.EndOfStream)
            {
                string str = reader.ReadLine();                
                StreamWriter sw = new StreamWriter("E:\\" + str.Substring(0, str.IndexOf(",")) + ".txt");
                sw.WriteLine(headText);
                sw.WriteLine(str);
                sw.Close();
            }
        }

[david0620]

[Quote=引用 1 楼 smntbk 的回复:]
C# codeprivate void button1_Click(object sender, EventArgs e)
{
StreamReader reader = new StreamReader(@"E:\test.txt");//test.txt:原始文件
string headText = reader.ReadLine();
while (!reader.EndOfStream)
{
string str = reader.ReadLine();
StreamWriter sw = new StreamWriter("E:\\" + str.S…
[/Quote]

可以解释一下哪些代码的意思吗?

[david0620]

[Quote=引用 7 楼 smntbk 的回复:]
没错,ls说的对用FileSystemWatch类

C# codeSystem.IO.FileSystemWatcher watch = new System.IO.FileSystemWatcher("E:\\","aa.txt");
watch.Changed += new System.IO.FileSystemEventHandler(watch_Changed);
watch.EnableRaisingEvents = true;


//在changed事件中处理最后一行即可

C# codevoid watch_Changed(object sender, System.IO.FileSystemEventArgs e)
{
//TODO..
}
[/Quote]

如何只處理最後一行的資料啊？

[smntbk]

//取最后一行

StreamReader reader = new StreamReader(@"E:\test.txt");
string[] str = System.Text.RegularExpressions.Regex.Split(reader.ReadToEnd(),@"\r\n");//把文本内容按行保存在str数组中
string lastLine = str[str.Length-1];//最后一行

有一点：如果文本中内容很大的时候这种方法性能不是很好，那就可以定义一个变量保存改变前文本的Length，改变后直接取文本的SubString(Length).Trim()即是改变的文本内容。

[lfywy]

简单
学习了

[smntbk]

private void button1_Click(object sender, EventArgs e)
        {
            StreamReader reader = new StreamReader(@"E:\test.txt");//test.txt:原始文件
              string headText = reader.ReadLine();//先读出第一行，用作标题
              //接着读下面的内容，直到读完
              while (!reader.EndOfStream)
            {
                string str = reader.ReadLine();  //读取一行              
                   StreamWriter sw = new StreamWriter("E:\\" + str.Substring(0, str.IndexOf(",")) + ".txt");//创建文件(文件名用第一个','前的内容)
                sw.WriteLine(headText);//向文件写标题
                  sw.WriteLine(str);//写该行内容
                  sw.Close();//关闭流
              }
        }

也可以用reader.ReadToEnd()读取全部。再用正则@"\r\n"分割成string数组再保存。

[lovefootball]

string filePath = "你的路径";
using (StreamReader sr = new StreamReader(filePath))
{
    string temp = "";
    while (sr.EndOfStream)
    {
        if (String.IsNullOrEmpty(temp))
        {
            temp = sr.ReadLine();
            temp = temp.Substring(1);
        }
        else
        { 
            string t = sr.ReadLine();

            string path = Path.Combine(new FileInfo(filePath).DirectoryName,t.Split(',')[0] + ".txt");
            using (StreamWriter sw = new StreamWriter(path))
            {
                sw.WriteLine(t);
            }
        }
    }
}

[david0620]

smntbk，我的環境是這樣的：
有一個總的txt檔，下面會有好多行...會有一些新的信息不斷的寫入這個總的Txt檔，並且會生成一行行的，像上面一樣。相應這個總的Txt檔的時間也會變動(更新時間)。

有沒有什麼辦法可以得知這個txt檔是否變動了(更新時間)，如果有變動就取出變動的一行生成一個單獨的txt檔案...

[lovefootball]

使用filesystemwatcher监视文件
如果有变动则读取最后一行

[smntbk]

没错,ls说的对用FileSystemWatch类

System.IO.FileSystemWatcher watch = new System.IO.FileSystemWatcher("E:\\","aa.txt");
watch.Changed += new System.IO.FileSystemEventHandler(watch_Changed);
watch.EnableRaisingEvents = true;

//在changed事件中处理最后一行即可

void watch_Changed(object sender, System.IO.FileSystemEventArgs e)
{
    //TODO..
}

[david0620]

[Quote=引用 7 楼 smntbk 的回复:]
没错,ls说的对用FileSystemWatch类

C# codeSystem.IO.FileSystemWatcher watch = new System.IO.FileSystemWatcher("E:\\","aa.txt");
watch.Changed += new System.IO.FileSystemEventHandler(watch_Changed);
watch.EnableRaisingEvents = true;


//在changed事件中处理最后一行即可

C# codevoid watch_Changed(object sender, System.IO.FileSystemEventArgs e)
{
//TODO..
}
[/Quote]

如果我的目錄下還有子目錄，當子目錄下的文件如果發生了變化，怎麼得到是哪個文件變化了？

[smntbk]

System.IO.FileSystemWatcher watch = new System.IO.FileSystemWatcher("目录名","文件名");