While implementing Prototype into a .NET 2.0 web application, I have been receiving .NET asserts when closing prototype dialog boxes that host aspx pages that have the file upload .net object within them.
Here's a snip from the .NET assert:
{"File does not exist."}
[System.Web.HttpException]: {"File does not exist."}
Data: {System.Collections.ListDictionaryInternal}
In researching this issue, I found if the aspx page that hosts a .net
web object (such as file upload, tree view, or combo box) and has any
images or internal pages that receive a 404 will cause this assert. In
debugging this issue, the destructor in the Window.prototype
(windows_js_1.0/javascripts/window.js) sets the this.content.src = null.
This results in a 404 being returned to the client and will cause
asserts within the .NET web form.
I have found a workaround to this solution, but would like to know if
there's a better workaround, or if there's any serious side effects to
the Prototype code base with this fix. I now set the src = "". This
doesn't appear to cause any visual side effects in our application.
Thank you in advance for any assistance or guidance to help me work
around this issue.
______________________________
John Schmier
Software Engineer, Autodesk Labs <http://labs.autodesk.com/>
Autodesk, Inc.
3900 Civic Center Drive
San Rafael, California 94903
<http://dwf.blogs.com>
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