Question

我正在开发一个自动取款机软件系统,在该系统中,我维持在文本档案中的数据库。我想删除文本档案中的记录。我的记录按行文记录保存。我从互联网上找到了一部最新的法典,但希望删除这种说法。请帮助我。

StringBuilder newFile = new StringBuilder();
string temp = "";
string[] file = File.ReadAllLines(@"C:Documents and Settingsjohn.groveDesktop1.txt");
foreach (string line in file)
{
    if (line.Contains("string"))
    {
        temp = line.Replace("string", "String");
        newFile.Append(temp + "
");
        continue;
    }
    newFile.Append(line + "
");
}

File.WriteAllText(@"C:Documents and Settingsjohn.groveDesktop1.txt", newFile.ToString());

Answer 1

更进一步地将这一点纳入主流:

string lines = File.ReadLines(path)
                   .Select(line => line.Replace("string", "String"));
File.WriteAllLines(newPath, lines);

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