Question

I m与多行文组合作,我需要把一切分成三组

1: beginning of the file up to a string literal // don t keep
2: The next line //KEEP THE LINE FOLLOWING STRING LITERAL
3: Everything following that line to the end of file. // don t keep


 <<
 aFirstLing here 
 aSecondLine here
 MyStringLiteral  //marks the next line as the target to keep 
 What I want to Keep!
 all kinds of crap that I don t
 <<

我发现,从一线一开始,有无数的路要走,但我无法看到,在我达到这一字面之前,如何列入数目不明的非空白线。

EDIT:I m 删除蚊帐,只注重ex。或许这是了解反馈的场所?

Answer 1

仅读到你们需要的东西,而不是读到整个档案中:

List<string> TopLines = new List<string>();
string prevLine = string.Empty;
foreach (var link in File.ReadLines(filename))
{
    TopLines.Add(line);
    if (prevLine == Literal)
    {
        break;
    }
    prevLine = line;
}

尽管我不知道是谁,但我还是会支持解决该问题。

EDIT:

如果你在申请中已有电子邮件文本(作为示意图),你必须首先将其分为几行。您可以通过<代码>String. Split来做到这一点,在新线路上分立,或可创建<代码>StringReader并逐行读。以上逻辑仍然适用,但并不适用<代码>File.ReadLines,仅使用foreach。

EDIT:

The following LINQ may do it:

TopLines = File.ReadLines(filename).TakeWhile(s => s != Literal).ToList();
TopLines.Add(Literal);

或者,如果指示已经列入清单:

TopLines = lines.TakeWhile(s => s != Literal).ToList();
TopLines.Add(Literal);

Answer 2

.*(^MyStringLiteral ? )([w|s][^ ]+)(.+) seems to work. the trick wasn t back references - it was the exclusion of .

Answer 3

文件:Read AllLines(Read AllLines)将给你一个阵列,在你找到字面之前,你可以接手。

string[] lines = File.ReadAllLines();
for(int i;i<lines.Length;i++)
{
     if(line == Literal)
     return lines[i + 1];
}

友情链接