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Version 4.x > Portal Engine > Unable to cast object of type MyWebpart to type 'CMS.PortalControls.CMSAbstractWebPart'. View modes: 
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christophe - 6/25/2009 3:41:18 AM
   
Unable to cast object of type MyWebpart to type 'CMS.PortalControls.CMSAbstractWebPart'.
Hi,

We are having a very unusual error on one of our custom webpart
We can't change the layout and create a new one without changing anything :
the error we get is the following :
[Error loading the WebPart 'MyNewsletterSubcriptions']
Unable to cast object of type 'ASP.cmswebpartlayouts_8e331d47_cb6b_43ab_a992_0bda4a169dda_penguin_mynewslettersubcriptions___test_ascx' to type 'CMS.PortalControls.CMSAbstractWebPart'.

It works fine when switching back the default layout.

Any idea Anyone?
Cheers.
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Kentico Consulting
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kentico_borisp - 7/1/2009 3:50:48 AM
   
RE:Unable to cast object of type MyWebpart to type 'CMS.PortalControls.CMSAbstractWebPart'.
Hello,

Unfortunately, this is quite a common error message.

Could you please try to delete the .Net cache? Could you please also take a look into the Event log, if there is something more about the error? Could you please describe further, what are the changes in the layout?

Best Regards,
Boris Pocatko

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shivam-inorbital - 10/9/2010 12:53:29 AM
   
RE:Unable to cast object of type MyWebpart to type 'CMS.PortalControls.CMSAbstractWebPart'.
Hello Sir,

I am experiencing a similar problem. I am created a webpart with regular c# to connect to custom table. Is it possible to get data like that?

Thanks.

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shivam-inorbital - 10/9/2010 1:06:21 AM
   
RE:Unable to cast object of type MyWebpart to type 'CMS.PortalControls.CMSAbstractWebPart'.
shivam-inorbital wrote: Hello Sir,

I am experiencing a similar problem. I created a webpart with regular c# to connect to custom table. Is it possible to get data like that?

Thanks.
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Kentico Consulting
Kentico Consulting
kentico_borisp - 10/12/2010 8:02:31 AM
   
RE:Unable to cast object of type MyWebpart to type 'CMS.PortalControls.CMSAbstractWebPart'.
Hello,

Yes, this shouldn't be a problem. There is a section of the Developer's guide which describes how to manage the custom tables records with the API.

Best regards,
Boris Pocatko

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