如何从c#中的文件中删除匹配的行

string filePath = "path/to/file.txt";
string tempFilePath = "path/to/tempfile.txt";

using (StreamReader reader = new StreamReader(filePath))
{
    using (StreamWriter writer = new StreamWriter(tempFilePath))
    {
        // 读取文件内容并进行处理
    }
}

string line;
while ((line = reader.ReadLine()) != null)
{
    // 判断是否匹配要删除的条件
    if (!line.Contains("匹配的条件"))
    {
        // 将不匹配的行写入临时文件
        writer.WriteLine(line);
    }
}

reader.Close();
writer.Close();

File.Delete(filePath);
File.Move(tempFilePath, filePath);

string filePath = "path/to/file.txt";
string tempFilePath = "path/to/tempfile.txt";

using (StreamReader reader = new StreamReader(filePath))
{
    using (StreamWriter writer = new StreamWriter(tempFilePath))
    {
        string line;
        while ((line = reader.ReadLine()) != null)
        {
            // 判断是否匹配要删除的条件
            if (!line.Contains("匹配的条件"))
            {
                // 将不匹配的行写入临时文件
                writer.WriteLine(line);
            }
        }
    }
}

reader.Close();
writer.Close();

File.Delete(filePath);
File.Move(tempFilePath, filePath);