BUG01:打开子窗体(sender as ToolStripMenuItem)是null,取不到权限

private void menuSalesOrder_Click(object sender, EventArgs e)

{

  MdiTools.OpenChildForm(this.MdiParent as IMdiForm, typeof(frmSO), sender as ToolStripMenuItem);

}

private void menuSalesOrder_Click(object sender, EventArgs e)

{

  MdiTools.OpenChildForm(this.MdiParent as IMdiForm, typeof(frmSO), menuSalesOrder); //指定菜单名

}