waiting form get disappeared while executing long process

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VB

I am trying to display waiting message which is actually a form while long process is running in some different file. Issue i am facing is the form get disappeared once the process gets started but its still active and running the process

My code:

Dim objWait As New frmWaitupdate
   Dim strReply As String

   Dim ischange As Boolean
   Dim obj1 As New MyBO.UpdateSchemaBO()
   ischange = obj1.CheckSchemaChanges(Application.ProductVersion.ToString())

   If ischange = True Then

       lblMsg.Text = "Schema changes found please wait  Please wait."

       obj1.AddVersionTable(Application.ProductVersion.ToString())
       Me.Visible = True

       strReply = obj1.UpdateSchema(Me)
       If strReply <> "" Then
           MessageBox.Show(strReply, "abc")
       Else
           MessageBox.Show("Schema updated successfully", "abc")
       End If


       'objWait.Hide()
   ElseIf ischange = False Then

       MessageBox.Show("No schema changes found", "abc")


       End If

   End If

As the process goes in UpdateSchema() which takes around 30-45 sec to finish the form gets disappear.Is there any way to keep the form intact on screen until my process gets complete??