This error I am getting I dont think is a SF specific error but rather a dot net error. I have some validation I do the minute I load a form. If validation fails, I then want to close the form and exit. The code I have on the Load event

if (validation = false)
{this.close();}

but I get a message :  Value Close() cannot be called while doing CreateHandle().

Do I have this code in the right place ?