winform 点击全选

 #region 全选
        //chkAll_Checked即全选控键的点击事件
        private void chkAll_CheckedChanged(object sender, EventArgs e)
        {
            if (chkAll.Checked)
            {
                chkSun.Checked = true;
                chkMon.Checked = true;
                chkThu.Checked = true;
                chkTue.Checked = true;
                chkWed.Checked = true;
                chkFri.Checked = true;
                chkSat.Checked = true;
            }
            else
            {
                chkSun.Checked = false;
                chkMon.Checked = false;
                chkThu.Checked = false;
                chkTue.Checked = false;
                chkWed.Checked = false;
                chkFri.Checked = false;
                chkSat.Checked = false;
            }
        } 
        #endregion