asp.net 一般处理程序 ashx 要点格式

public void ProcessRequest(HttpContext context)
{

//清除缓存
context.Response.ContentType = "text/plain";
context.Response.Buffer = true;
context.Response.ExpiresAbsolute = DateTime.Now.AddDays(-1.0);
context.Response.AddHeader("pragma", "no-cache");
context.Response.AddHeader("cache-control", "");
context.Response.CacheControl = "no-cache";

context.Response.Write("Hello World");
context.Response.End();
}