ajax不被执行,AjaxPro的回调函数不能被执行

C# code[AjaxPro.AjaxMethod]

public string displayRst(int flag)

{

……

while(flag==0)

{

foreach (FileInfo fi in dir.GetFiles())

{

if (fi.Name.Substring(fi.Name.LastIndexOf(".") + 1) != "zip")

{

flag = 1;

//显示文件内容

switch (method)

{

case 1: myResult = this.ReadIni(fi.FullName); break;

case 2: myResult = this.ReadSort(fi.FullName); break;

case 3: myResult = this.readWebSite(fi.FullName); break;

case 4: myResult = this.ReadFile(fi.FullName); break;

default: break;

}

break;

}

}

}

return myResult;

}