private void tsbUser_Click(object sender, EventArgs e) { if (m_frmUserManage == null || m_frmUserManage.IsDisposed) { m_frmUserManage = new UserManage(); m_frmUserManage.MdiParent = this; } m_frmUserManage.Visible = false; m_frmUserManage.Activate(); m_frmUserManage.WindowState = FormWindowState.Maximized; m_frmUserManage.Show(); this.tsslCurrent.Text = "当前操作:用户管理"; m_iOutput = m_frmUserManage; this._SearchGood = null; }