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To provide better File Upload experience and usability, starting from Q3 2012, RadAsyncUpload is enabled out-of-the box in RadEditor's File Browser dialogs. Therefore the handler for the AsyncUpload should be registered in the web.config explicitly:
<
httpHandlers
>
<
add
path
=
"Telerik.Web.UI.DialogHandler.aspx"
type
=
"Telerik.Web.UI.DialogHandler"
verb
=
"*"
validate
=
"false"
/>
<
add
path
=
"Telerik.Web.UI.WebResource.axd"
type
=
"Telerik.Web.UI.WebResource"
verb
=
"*"
validate
=
"false"
/>
</
httpHandlers
>
...
<
handlers
>
<
add
name
=
"Telerik_Web_UI_DialogHandler_aspx"
verb
=
"*"
preCondition
=
"integratedMode"
path
=
"Telerik.Web.UI.DialogHandler.aspx"
type
=
"Telerik.Web.UI.DialogHandler"
/>
<
add
name
=
"Telerik_Web_UI_WebResource_axd"
verb
=
"*"
preCondition
=
"integratedMode"
path
=
"Telerik.Web.UI.WebResource.axd"
type
=
"Telerik.Web.UI.WebResource"
/>
</
handlers
>
If the Telerik.Web.UI.WebResource.axd handler is not registered AsyncUpload will not function correctly and the File Browser (ImageManager, DocumentManager, MediaManager, etc) dialogs will look in a similar way:
Both Telerik.Web.UI.DialogHandler.aspx and Telerik.Web.UI.WebResource.axd handlers can be registered in the web.config file via the RadEditor's smart tag.