Dim obj As New Form1
Dim tp As TabPage
tp = New TabPage("TT") 'STR为TabPage的名字
tp.BorderStyle = BorderStyle.Fixed3D
obj.TopLevel = False
tp.Controls.Add(obj)
Me.Tabpage.TabPages.Add(tp)
Tabpage.SelectedTab = tp
Sub showforms()
Dim obj As New Form2
Dim tp As TabPage
tp = New TabPage(str)‘STR为TabPage的名字
tp.BorderStyle = BorderStyle.Fixed3D
tp.Controls.Add(obj)
Me.TabPage1.TabPages.Add(tp)
TabPage1.SelectedTab = tp
End Sub