In asp.net web form application, if we need ajax service, we will need to create wcf services on server side to serve ajax calls, while in MVC web application(version 3), no wcf is needed, a controller will do.
Here are two examples (GET and POST) of how to use ajax in mvc application
Http Get example: ajax consumer in view
<script type="text/javascript">
var user = {
'id': 1
};
$.get(
'home/getUser',
user,
function (data) {
alert(data.name);
}
);
</script>
Http Get example: ajax server in home controller
public class HomeController : Controller
{
// data GET service
public JsonResult getUser(int id)
{
User user = db.Users.where(u=>u.id==id)
return Json(user,JsonRequestBehavior.AllowGet);
}
}
A few points:
Controller must return JsonResult rather than ActionResult as a normal controller does as we would want the data to be returnd as json data, and it does not have a ‘d’ wrapper
JsonRequestBehavior.AllowGet must be set in Json()call, otherwise you will get:
500 internal server error with message like
This request has been blocked because sensitive information could be disclosed to third party web sites when this is used in a GET request. To allow GET requests, set JsonRequestBehavior to AllowGet
You only need to set this parameter for GET and returning JSON array to avoid JSON hijacking, no need for POST requests.
Http POST example: ajax consumer in view
<script type="text/javascript">
var user={
'name':’TheUser’,
'age':30
};
$.post(
'home/SaveUser',
user,
function (data) {
if (data === true) {
alert('User is saved');
}
else {
alert('Failed to save the user');
}
},
'json'
);
</script>
Http POST example: ajax server in home controller
public class HomeController : Controller
{
// data POST service
[AcceptVerbs(HttpVerbs.Post)]
public JsonResult SaveUser (string name, int age)
{
return Json(true);
}
}
A few points:
Have to decorate the controller with ‘POST’
Datatype in $.post in example is set to json, but it is not necessary to be so, if you just pass data in fields rather than in complex object. When it is not set to json it will use application/x-www-form-urlencoded as a way to pass data in standard post.
Summary:
In asp.net MVC you can use controller as ajax server without having to use wcf, compared with wcf, no configuration is needed.
Reasons why you must trust ASPHostPortal.com
Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.
You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:
- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.