ajax成功之后在执行,ajax传入成功后执行后台方法

做一个网站，再页面读取一段文字后，点击按钮，用ajax将文字传回后台，现在我希望ajax返回成功后，执行另外一段后台方法，

请问有什么好方法吗？

[WebMethod]

public static string GetStr(string s)

{

linkWord = s;

return linkWord;

}

private void BtCompare()

{

//在页面选中一段句子，在某个地方弹出一个按钮，点击按钮，将选中的句子传入到下面的s当中，然后调用方法，将两个东西传入到o.txt和s.txt，然后比较，接着切割句子，最后输出

//string s = "As a linguist, he acknowledges that all varieties of human language, including non-standard ones like Black English, can be powerfully expressive--there exists no language or dialect in the world that cannot convey complex ideas.";//在前台选中语句，传入到这里

demo gg = new demo();

string[] sentence = gg.SentenceDetect(linkWord);

string otxt = gg.Parse(sentence);//放在o.txt

FileStream fotxt = new FileStream(@"D:\\parser\\o.txt", FileMode.Create);

StreamWriter ot = new StreamWriter(fotxt);

ot.Write(otxt);

ot.Flush(); //清除缓存

ot.Close();

ot.Dispose();

fotxt.Close();

DoParser doq = new DoParser();

string stxt = doq.parser(linkWord);//放在s.txt

FileStream fstxt = new FileStream(@"D:\\parser\\s.txt", FileMode.Create);

StreamWriter st = new StreamWriter(fstxt);

st.Write(stxt);

st.Flush();

st.Close();

st.Dispose();

fstxt.Close();

Process p = new Process();

p.StartInfo.FileName = @"cmd.exe";

p.StartInfo.UseShellExecute = false;

p.StartInfo.RedirectStandardInput = true;

p.StartInfo.RedirectStandardOutput = true;

p.StartInfo.RedirectStandardError = true;

p.StartInfo.CreateNoWindow = true;

p.Start();

string str = "D:\\BCompare\\BCompare.exe @D:\\parser\\BCconsle.txt D:\\parser\\o.txt D:\\parser\\s.txt D:\\学习档案\\Reading\\Reading\\report.html ";//保存到当前目录下

p.StandardInput.WriteLine(str);

p.StandardInput.WriteLine();

p.StandardInput.AutoFlush = true;

p.StandardInput.WriteLine("exit");

p.StandardOutput.ReadToEnd();

p.Close();

Report.Text = "";

Utils uu = new Utils();

//String[] ss = uu.subSentenceASC(s);//先长后短句

String[] ss = uu.subSentenceDESC(stxt);//先短后长句

int count = 0;

foreach (string aa in ss)