如何将Web请求保存到文件中

Question

这是我到目前为止所拥有的。相当新的我自己。非常感谢帮助。我的目标是将信息保存到几乎在任何地方创建的文本文件中，但最好是在临时文件夹或其他内容。

    static async void GetNewData()
    {
        String page = "http://www.coinmarketcap.com";
        var client = new HttpClient();

        // Create the HttpContent for the form to be posted.
        var requestContent = new FormUrlEncodedContent(new[] {
        new KeyValuePair<string, string>("text", "This is a block of text"),
});

        // Get the response.
        HttpResponseMessage response = await client.PostAsync(page,
            requestContent);

        // Get the response content.
        HttpContent responseContent = response.Content;

        // Get the stream of the content.
        using (var reader = new StreamReader(await responseContent.ReadAsStreamAsync()))
        {
            // Write the output.
            Console.WriteLine(await reader.ReadToEndAsync());

            using (StreamWriter w = File.AppendText(reader.ReadToEndAsync().ToString);

    //        StreamWriter sw1 = new StreamWriter(File.OpenWrite());
    //     sw1.Write(await reader.ReadToEndAsync() textytext);
        }
    }



}
}

再一次，任何建议都会非常有帮助，我一定会提出最准确的答案：）