Jquery - Return An Error In An Ajax Scenario From MVC Action?
May 14, 2010
I am using ASP.NET MVC with jquery. I have the following MVC Action that returns a partial page on Success. On Application Error, I am not sure what to send it for correctly handling it at the client side.
public ActionResult LoadFilterSet(int filterSetId)
{
try
{
BreadCrumbManager bcManager = this.ResetBreadCrumbManager(this.BreadCrumbManagerID);
GeneralHelper.LoadBreadCrumbManager(bcManager, filterSetId);
ViewData["BreadCrumbManager"] = bcManager;
return View("LoadFilterSet");
}
catch (Exception ex)
{
return Content("");
}
}
Following is my jquery ajax call. Notice that I am checking for the data length to make sure there are no errors. Please suggest me a better way of doing this.
$.ajax({
type: "GET",
dataType: "html",
async: true,
data: ({ filterSetId: selectedId }),
url: link,
contentType: "text/html; charset=utf-8",
success: function(data, textStatus) {
if (data.length > 0) {
// Clear the local filters first.
clearLocalFilters();
$('td.selected-filters table.filters-display').append(data);
}
}
});
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Resolution:I didn't ask my question very well, as evidenced by a 5-10 minute discussion I just had with a coworker about this very topic. He kept asking me the same question that many users on this page asked me: "How does the controller know which view to return?" I responded, "That's what I'm trying to figure out." I was trying to get the method to return a different view (or Json output) when AJAX was the requester. A string argument in the method was my solution.
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Jun 22, 2010
At first, I should confess that I am not sure if it is a good practice or not. I have came out with the idea due to my practice of jQuery.ajax().
What I want to achieve is depended on this design:
//Server Side; an .asmx file contains a method like this:
[WebMethod]
public string NewContent(string parameter)
{
string renderedHTML = string.Empty();
switch(parameter)
{
case ("person"):
// create an asp.net panel with
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break;
case ("department"):
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// render control and assign its html to renderedHTML
break;
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And from the client I want to do this:
// Some html in the page
<script type="text/JavaScript">
jQuery.post('ajax/myWebServices.asmx/NewContent'
function(returnedPanelContent) {
$('.result').html(returnedPanelContent);
});
</script>
Question is:
How can I make it work? Briefly to have a webservice method that returns different asp.net Panel control content created programmatically so that I can get this control rendered as HTML in my client-side and insert it to my web page?
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When I write this
[Code]....
which makes things quite tedious. Wouldn't it be easier if UrlHelper.Action returned MvcHtmlString?
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