I have a form in my website which posts json to the async handler which validates the data and return back the resonse OK or error and i will make the redirect on the client based on the response give by my handler.
我在我的网站上有一个表单，它将json发布到异步处理程序，它验证数据并返回响应OK或错误，我将根据我的处理程序给出的响应在客户端上进行重定向。
But when the response is ok, i want to perform some tasks asynchronously. But the asynchronous calls are not working inside the .ashx code. it is always synchronous.
但是当响应没问题时，我想异步执行一些任务。但异步调用在.ashx代码中不起作用。它始终是同步的。
Could you please give me an advice on this.?
能否就此给我一个建议。
code:
码：
public class ValidateHandler : IHttpHandler, IRequiresSessionState
{
public void ProcessRequest(HttpContext context)
{
NameValueCollection nvcForm = context.Request.Form;
Dictionary<string, string> errorFieldsDict = new Dictionary<string, string>();
foreach (string nameValueKey in nvcForm.AllKeys)
{
regExpToTest = string.Empty;
switch (nameValueKey)
{
case "firstName":
//validate
break;
case "lastName":
//validate
break;
case "email":
//validate
break;
case "phoneNumber":
//validate
break;
case "phoneCountryCode":
//validate
break;
case "country":
//validate
break;
case "addressLine1":
//validate
break;
case "addressLine2":
//validate
break;
case "city":
//validate
break;
case "postalCode":
//validate
break;
default:
//validate
break;
}
if (!string.IsNullOrEmpty(regExpToTest) && !Regex.IsMatch(nvcForm[nameValueKey], regExpToTest) && !string.IsNullOrEmpty(nvcForm[nameValueKey]))
{
errorFieldsDict.Add(nameValueKey, "Please Enter Correct Value");
isSuccess = false;
}
}
//Do your business logic here and finally
if (isSuccess)
{
JavaScriptSerializer serializer = new JavaScriptSerializer();
try
{
Dictionary<string, object> formValues = GetDictionaryForJson(nvcForm);
string previoiusUrl = GetRequestedURL(context);
string partner = string.Empty;
if (System.Web.HttpContext.Current.Session["yourpartner"] != null)
partner = System.Web.HttpContext.Current.Session["yourpartner"].ToString();
else if (System.Web.HttpContext.Current.Request.QueryString["utm_source"] != null)
partner = System.Web.HttpContext.Current.Request.QueryString["utm_source"];
else
partner = "company";
formValues.Add("partnerCode", partner);
string brochureType = string.Empty;
if (!string.IsNullOrEmpty(nvcForm["addressLine1"]) || !string.IsNullOrEmpty(nvcForm["addressLine2"]))
brochureType = "FBRO";
else
brochureType = "EBRO";
//Create a row in database
Item programItem = Sitecore.Context.Database.Items.GetItem(programRootpath + nvcForm["selectYourProgram"]); ;
AsyncMailSender caller = new AsyncMailSender(SendEmail);
IAsyncResult result = caller.BeginInvoke(programItem, nvcForm["email"], null, null);
}
catch (Exception ex)
{
isSuccess = false;
Log.Error("Enquiry handler failure: " + ex.Message, ex);
response.response = "error";
response.message = ex.Message;
context.Response.ContentType = "application/json";
context.Response.Write(JsonConvert.SerializeObject(response));
}
if (isSuccess)
{
response.response = "ok";
context.Response.ContentType = "application/json";
context.Response.Write(JsonConvert.SerializeObject(response));
}
}
else
{
response.response = "errorFields";
response.errorFields = errorFieldsDict;
context.Response.ContentType = "application/json";
string responseJson = JsonConvert.SerializeObject(response);
context.Response.Write(JsonConvert.SerializeObject(response, Newtonsoft.Json.Formatting.None));
}
}
private string GetRequestedURL(HttpContext context)
{
string previousURL = string.Empty;
try
{
previousURL = context.Request.ServerVariables["HTTP_REFERER"];
}
catch
{
previousURL = context.Request.Url.AbsolutePath;
}
return previousURL;
}
public bool IsReusable
{
get
{
return false;
}
}
private void SendEmail(Item programItem, string toEmail)
{
if (programItem != null)
{
SendEmail()
}
}
private Dictionary<string, object> GetDictionaryForJson(NameValueCollection formValues)
{
Dictionary<string, object> formDictionary = new Dictionary<string, object>();
foreach (string key in formValues.AllKeys)
{
formDictionary.Add(key, formValues[key]);
}
return formDictionary;
}
}
public delegate void AsyncMailSender(Item program, string toAddress);
PS: I did hide some code which is just our business.But Would be great if you can comment on that.
PS：我确实隐藏了一些只是我们业务的代码。但如果你能对此发表评论，那就太棒了。
thanks guys
多谢你们
2 个解决方案
#1
6
You need to implmement IHttpAsyncHandler rather than IHttpHandler and register it as such in the web.config file. Browsers will also observe connection limits, so make sure IIS is configured properly to handle multiple connections, keep-alive, etc.
您需要实现IHttpAsyncHandler而不是IHttpHandler，并在web.config文件中将其注册。浏览器还会观察连接限制，因此请确保正确配置IIS以处理多个连接，保持活动等。
Here's a detailed walk through: http://msdn.microsoft.com/en-us/library/ms227433.aspx
这是一个详细的步骤：http：//msdn.microsoft.com/en-us/library/ms227433.aspx
#2
18
In ASP.NET 4.5 is the HttpTaskAsyncHandler. You can use it like this:
在ASP.NET 4.5中是HttpTaskAsyncHandler。你可以像这样使用它：
public class MyHandler : HttpTaskAsyncHandler {
public override async Task ProcessRequestAsync(HttpContext context) {
await WhateverAsync(context);
}
}
#1
6
You need to implmement IHttpAsyncHandler rather than IHttpHandler and register it as such in the web.config file. Browsers will also observe connection limits, so make sure IIS is configured properly to handle multiple connections, keep-alive, etc.
您需要实现IHttpAsyncHandler而不是IHttpHandler，并在web.config文件中将其注册。浏览器还会观察连接限制，因此请确保正确配置IIS以处理多个连接，保持活动等。
Here's a detailed walk through: http://msdn.microsoft.com/en-us/library/ms227433.aspx
这是一个详细的步骤：http：//msdn.microsoft.com/en-us/library/ms227433.aspx
#2
18
In ASP.NET 4.5 is the HttpTaskAsyncHandler. You can use it like this:
在ASP.NET 4.5中是HttpTaskAsyncHandler。你可以像这样使用它：
public class MyHandler : HttpTaskAsyncHandler {
public override async Task ProcessRequestAsync(HttpContext context) {
await WhateverAsync(context);
}
}