实际上我正在尝试显示并与父表单对话,参考示例是:
Parent Parent_child dialog
Main_form new_invoice new_invoicedialog
我试过这段代码但它说:
Private Sub invoice_new_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyUp
With new_invoicedialog
.MdiParent = Main_Form
.Owner = Me 'invoice_new
.StartPosition = FormStartPosition.CenterScreen
.ShowDialog()
End With
End Sub
不是顶级表单的表单不能显示为模式对话框。在调用 showDialog 之前从任何父窗体中删除窗体。