aspx.cs文件中发送ashx请求

namespace MyProject.CustomAshx
{
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    public class Customer : IHttpHandler
    {
        public void ProcessRequest(HttpContext context)
        {
            int customerId = 0;
            //接收参数
            if (HttpContext.Current.Items["CustomerId"] != null)
                customerId = HttpContext.Current.Items["CustomerId"].ToString();
            
            context.Response.ContentType = "text/plain";
            context.Response.ContentEncoding = Encoding.UTF8;
            context.Response.Write(customerId);
        }
        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

MyProject.CustomAshx customer = new MyProject.CustomAshx();
//添加参数
HttpContext.Current.Items.Add("CustomerId", "123");
customer.ProcessRequest(HttpContext);