Error using Ajax.BeginForm when giving a callback parameter for OnSuccess, OnFailure, OnComplete and OnBegin

问题

I'm trying to use an Ajax form, and whenever I provide a callback method to any of the AjaxOptions properties I get this error..

Microsoft JScript runtime error: Object doesn't support this property or method

If I do not provide a callback function to any of the properties (OnSuccess, OnFailure, OnComplete, or OnBegin) no error occurs and the form gets posted correctly.

Here is my code.

<% using (Ajax.BeginForm("someAction", "SomeController", new AjaxOptions() {
        HttpMethod="POST",
        UpdateTargetId = "feedbackMsg",
        OnSuccess = "ShowConfirmationMessage"
    }))
{ %>

My javascript code is this.

function ShowConfirmationMessage(xhr) { alert(xhr);}

When I provide the OnSuccess method the code gets rendered like this.

<form action="/Review/SaveQualityScore" 
    method="post" 
    onclick="Sys.Mvc.AsyncForm.handleClick(this, new Sys.UI.DomEvent(event));" 
    onsubmit="Sys.Mvc.AsyncForm.handleSubmit(this, new Sys.UI.DomEvent(event), 
        { 
            insertionMode: Sys.Mvc.InsertionMode.replace, 
            httpMethod: &#39;POST&#39;, 
            updateTargetId: &#39;feedbackMsg&#39;, 
            onSuccess: Function.createDelegate(this, ShowConfirmationMessage) 
        });"
>

I'm guessing the Function.createDelegate is the problem. Because when I remove the OnSuccess property the function.CreateDelegate doesn't get rendered and everything works fine.

Anyways, I'm going crazy over here, any help would be appreciated. Thank you!

回答1:

Make sure the following scripts are both included:

MicrosoftAjax.js
MicrosoftMvcAjax.js

回答2:

Or better yet...if you're using MVC 3, be sure to include jquery.unobtrusive-ajax.js. It'll render out your form tag cleaner.

Also, you might not want to include UpdateTargetId and OnSuccess together. I just spent 3 hours figuring out that if my controller is returning json, my onsuccess javascript callback function is never hit if I define UpdateTargetId in the Ajax.BeginForm.

来源：https://stackoverflow.com/questions/6347784/error-using-ajax-beginform-when-giving-a-callback-parameter-for-onsuccess-onfai

标签

javascript

asp.net-mvc

asp.net-ajax