Solution to "invalid formatetc structure"

Source: Internet
Author: User
Make an ASP.. the following error occurs when you drag the toolkit to the page: "invalid formatetc structure (exception from hresult: 0x80040064 (dveformatetc)". Invalid formatetc structure is used in English, search online to see if any of your friends has encountered this error, but there is no solution. I have been exploring for a long time and finally found out the cause of the error. In the past, my class definition was missing a "public", so everyone was careless. Change it to the following: public class mycontrol: webcontrol compilation, drag it to the page again, OK!

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