i have a form which includes list of records. When user clicks edit image on table modal div will show to him. i get this modal div with ajax. Now after changing some fields i am posting it via ajax. I watched to firebug. it sends parameter. But when i debug code in VS method calls but no parameter has been send. i have done it before in other pages. but now i can not. What problem can be here in my code?
C# Code here
[HttpPost]
//[Authorize(Roles = "Operator")]
public ActionResult EditRow(string Name, string SecondName)
{
//code goes here
return Content("Saved");
}
jquery ajax code is here
$.ajax({
type: 'POST',
contentType: 'application/json; charset=utf-8',
url: 'EditRow',
data: { Name: "php", SecondName: "MVC" },
dataType: 'html',
success: function (response) {
//some code goes here
}
});
Have you tried to simplify your Ajax call to:
$.ajax({
type: 'POST',
url: 'EditRow',
data: { Name: "php", SecondName: "MVC" },
success: function (response) {
//some code goes here
}
});
If this doesn't work there must be something else in your code that makes your code invalid. Maybe some base controller action filters you forgot to put there or some custom model binders or some other global registration.
Sending complex JSON to server
If you'd like to send complex JSON using the same technique, you can read my blog post and use the simple plugin that will make it possible to send complex JSON objects to Asp.net MVC controller action.
Related
Are all button control has to be post method? or we can set it to get method, for example, I want to see an employee details by giving employeeId and click submit button
There is no difference between GET and POST method. They both provide url and parameters. POST method only have some advantages and some restrictions.
If your button is on form (as in classic asp.net), and there is no javascript handler for this button - only POST method can be here.
If you create jquery code (or pure javascript), that overrides default behaviour of the button, you can select what method use: POST or GET
<script>
$('#button').click(function() {
$.ajax({
url: '....',
data: { ....},
type: 'GET', //or 'POST'
success: function(res) {
//all fine
},
error: function() {
//invalid url or server error
}
};
return false; //to avoid default submit
});
</script>
I am trying to pass extra parameters through to my ashx when using Jquery UI auto complete.
I have seen lots of examples and have spent ages fiddling but I can't get mine to work.
I have two auto complete textboxes, what ever is entered in the first one needs to narrow down the search for the second one.
On my first autocomplete textbox all works fine and the ID that is returned is set to a hidden field.
$("#<%=txtSearch1.ClientID%>").autocomplete('/Search1.ashx');
$('#<%=txtSearch1.ClientID%>').result(function (event, data, formatted)
{
if (data) {
var id = data[1];
$("#<%=hdnSearched1.ClientID%>").val(id);
}
});
I want to use the value of the hidden field along with the value the user enters into the second textbox to do the search for the second auto complete
I first tried this:
$("#<%=txtSearch2.ClientID%>").autocomplete('/Search2.ashx',{
extraParams: { "Id": $("#<%=hdnSearched1.ClientID%>").val() }});
This fired my ashx but the Id in the extraparams was blank. A bit of googling told me this was because it was set when the page loaded so the value for the extra param was set before I set the value of the hidden field.
I did a bit more fiddling and searching and came up with something like this which a lot of people seem to be using.
$('#<%=this.txtSearch2.ClientID %>').autocomplete({
source: function (request, response)
{
$.ajax({
url: '/Search2.ashx',
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
data: {
term: request.term,
sId: $("#<%=hdnSearched1.ClientID%>").val()
},
success: function (data)
{
response(data);
},
error: function (XMLHttpRequest, textStatus, errorThrown)
{
alert(textStatus);
}
});
}
});
The problem is this doesn't even fire the ashx! I have been fiddling about with this for ages, following example after example but I can't seem to work what I am doing wrong!
I'm sure it must be obvious!
Can anyone help?
Always i get the alert in the "error". When i debugged i get the type,url as undefined. can anyone help me why that method is not getting called??
$(document).ready(function () {
$("#btnajaxcall").click(function () {
$.ajax({
type: "POST",
url: "Default.aspx/jQueryAjaxCalledMethod",
contentType: "application/json; charset=utf-8",
data: "{}",
dataType: 'json',
success: function () { alert('success') },
error: function () { debugger; alert('failure'); return false; }
});
});
});
[WebMethod]
public void jQueryAjaxCalledMethod()
{
//SOME CODE HERE
}
If im correct you should be using static method for these purposes, so function in your code behind should look like this
[WebMethod]
public static void jQueryAjaxCalledMethod()
{
//SOME CODE HERE
}
If you still get some errors take a look on this guy blog Encosia maybe you'll find there a solution
The jquery Ajax method is going to post your data in json format using the plain html protocol. ASP.NET will be expecting to unwrap a SOAP request to pass to the webmethod. Thus the error. You should use an MVC action instead, as suggested in one of the comments.
EDIT:On further investigation ASP.Net has an attribute that will allow the web method to be called:
[System.Web.Script.Services.ScriptService].
Use this attribute on the class and it might solve your problem.
Hi all i just used the jquery file hosted with google.
It worked out fine.
Previously i was using the jquery version 1.7.1 that i had downloaded and stored in my local. I also saw a lot of questions in the forum that this particular ajax call is quite not happening properly with .NET 4. I am not sure and forgive me if i am wrong but i do have a feeling that 1.7.1 in this case is not properly working with ASP.NET 4.
P.S -> I used this in the script tag -->
src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"
I've put together some jQuery AJAX code using some tutorials I found on the internet. I'm new to jQuery and want to learn how to do things betters. I have a coworker who put together a beautiful web application using a lot of jQuery.
The thing I'm most confused about here is: why is it necessary to use the ".d" when referring to the response of my web method and what does it stand for?
// ASP.net C# code
[System.Web.Services.WebMethod]
public static string hello()
{
return ("howdy");
}
// Javascript code
function testMethod() {
$.ajax({
type: "POST",
url: "ViewNamesAndNumbers.aspx/hello",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msg) {
alert(msg); // This doesn't display the response.
alert(msg.d); // This displays the response.
} // end success:
}) // end $.ajax
It was added in ASP.NET 3.5’s version of ASP.NET AJAX to prevent you from being vulnerable to this exploit: http://haacked.com/archive/2009/06/25/json-hijacking.aspx
(Answer sourced from http://encosia.com/2009/06/29/never-worry-about-asp-net-ajaxs-d-again/)
Microsoft does this to protect you from a security exploit. See the bottom of This Page for more information.
I guess alert(msg) displays "[object Object]" ?
If so it's because the object which is parsed through window.JSON (which happens under the hood when specifying json as dataType) does really look:
object = {
d: "some data"
}
Check what you are generating in ViewNamesAndNumbers.aspx/hello
I want to refresh only a single part of my page not the whole.
How ?
I wouldn't recommend Update Panel but you can use jQuery $.load() method which is pretty slick. Once you start using it, it helps you a lot.
So use Ajax... long story short.
Edit :
Maybe this article help as well :
Why Update Panels are Dangerous :
http://encosia.com/2007/07/11/why-aspnet-ajax-updatepanels-are-dangerous/
In web forms you can use the update panel
See here for example
You can also use JQuery although it depends on what you are trying to do and to what complexity.
$.ajax({
type: "POST",
contentType: "application/json; charset=utf-8",
url: "YourPage.aspx/apply",
dataType: "json",
data: json.stringify(""),
success: function (result) {
alert(result);
// window.location.href = "ClubCreation.aspx";
},
Error: function () {
alert('error');
}
});
[HttpPost]
public string apply()
{
return "Hi";
}
You can use Ajax to solve your problem this code will help you