Close button in windows form doesn't close the form in one hit

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VB

WinForms

Hello Experts,

I have windows Forms in which gridview cell double click open a new form with the clicked row values providing an option to update. Here I have everything seems working fine. But when I closed the new form which shows the clicked row details, it is loading again instead of closing the form.
Here is my code to open the new form. And also the code in New form

 Private Sub DataGridView1_CellMouseDoubleClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles DataGridView1.CellMouseDoubleClick, DataGridView1.CellMouseDoubleClick 
Dim dialog As New EditFeaturedItem(row)
     dialog.ShowDialog()
     dialog.Dispose()
End Sub

And the New EditFeatureItem Form has below code

Friend Class EditFeaturedItem
  Private _seq As DataGridViewRow

  Private Sub New()
    ' This call is required by the Windows Form Designer.
    InitializeComponent()
    ' Add any initialization after the InitializeComponent() call.
  End Sub
  Public Sub New(ByVal seq As DataGridViewRow)
    Me.New()
    _seq = seq
    ShowDetails(seq)
  End Sub

Can anyone help me out in resolving the issue.? I wanted to close the form if user clicks on Cross button on the form.