Category Archives: .net (control development)

Invalid FORMATETC structure (Exception from HRESULT: 0x80040064 (DV_E_FORMATETC))

I was developing some custom control and started getting this problem suddenly. While trying to figure it out, I realized that it was [TooboxItemAttribute] that was causing problem.   In my case, I was developing one base WebControl and one … Continue reading

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