Problem calling form while closing the current one

I am having problem closing current form when I call some other form from current one. For example when I use code

me.dispose (I tried me.close 开发者_运维百科too) frmExam.ShowDialog()

It closes the current form but does not call frmExam.vb

How to fix it? Thanks Furqan

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Show it and then close it!

frmExam.ShowDialog()
me.close()