在 C# 中搜索并追加新行

Question

我有这样的代码：

reset <= '1';
ds <= '0';
wait for 20ns;
wait until clk = '0';
reset <= '0';
wait until clk = '1';
wait until clk = '0';
inexp <= x"00903ad9";
inmod <= x"03b2c159";
report "clock init";
indata <= x"72624326";
wait until clk = '1';
wait for 2ns;
ds <= '1';
wait until ready = '0';
ds <= '0';
wait until ready = '1';
wait for 500ns;
reset <= '1';
ds <= '0';
wait for 20ns;
wait until clk = '0';
reset <= '0';

我想在每一行中搜索 "<=" 并在此行之前添加一个新行。（写入文件）我在我的代码中找到了这个词但是对于追加不知道！通过此代码找到并给出行：

    int counter = 1;
    string line;

    System.IO.StreamReader file = new System.IO.StreamReader("e:\file.txt");
    while ((line = file.ReadLine()) != null)
    {
        if (line.Contains("<="))
        {
            Console.WriteLine(counter.ToString() + ": " + line);                    
        }
        counter++;
    }

    file.Close();

谢谢

Answer 1

要写入文件新文本，请将您的代码更改为：

System.IO.StreamReader file = new System.IO.StreamReader("e:\file.txt");
System.IO.StreamWriter resultFile = new System.IO.StreamWriter("e:\resultFile.txt", false);
while ((line = file.ReadLine()) != null)
{
    if (line.Contains("<="))
    {
        resultFile.WriteLine(Environment.NewLine + counter.ToString() + ": " + line);                    
    }

    // if you don't want to write lines without "<=" - delete "else" block
    else
    {
        resultFile.WriteLine(counter.ToString() + ": " + line);    
    }
    counter++;
}

在此代码中，您创建新文件并将 file.txt 中的每一行写入其中。如果行包含 <=，则在开头追加新行。

因此，在磁盘 E 中，您将找到包含所需文本的新文件 resultFile.txt。

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