private void 开启管理员权限ToolStripMenuItem_Click(object sender, EventArgs e) { if (checkchildfrm("F_Doadmin") == false) { F_Doadmin F_ER = new F_Doadmin(); if (F_ER.ShowDialog() == DialogResult.OK) { MessageBox.Show("开启权限成功!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);//行数为零警告 for (int j = 1; j < this.管理员功能ToolStripMenuItem.DropDownItems.Count; j++) { 管理员功能ToolStripMenuItem.DropDownItems[j].Enabled = true; } 管理员功能ToolStripMenuItem.DropDownItems[0].Enabled = false; } } }