Help with *.Backgroundimage

is there a way i can see if the backgroundimage of an object (ie. a button) and see if it is a picture or anything?.....here is what i want to do.........

when a button is clicked change the background...if no current image is there put the image in there.....if the image is already there....make it blank again........is there anyway to do this????

Add an imagelist to the form, and add a graphic to it and set your button imagelist and image index. I here by consider the image index to be 0. Then:

VB Code:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Static imageisthere As Boolean
    If Not imageisthere Then
            Button1.ImageList = Nothing
            imageisthere = True
    Else
            Button1.ImageList = ImageList1
            Button1.ImageIndex = 0
            imageisthere = False
    End If
End Sub