How I Can Add Index Based Items To Mcheckedlistbox (Or) Mpopup?

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C#

WinForms

C#4.0

private void btnSelect_Click(object sender, EventArgs e)
        {
            //dataGridView1.CellMouseClick += dataGridView1_CellMouseClick;
            mCheckedListBox = new CheckedListBox();


            mCheckedListBox.CheckOnClick = true;


            ToolStripControlHost mControlHost = new ToolStripControlHost(mCheckedListBox);
            mControlHost.Padding = Padding.Empty;
            mControlHost.Margin = Padding.Empty;
            mControlHost.AutoSize = false;

            mPopup = new ToolStripDropDown();
            mPopup.Padding = Padding.Empty;
            mPopup.Items.Add(mControlHost);

            DoMyClickAction(((System.Windows.Forms.MouseEventArgs)(e)).X, ((System.Windows.Forms.MouseEventArgs)(e)).Y);
            mCheckedListBox.ItemCheck += new ItemCheckEventHandler(mCheckedListBox_ItemCheck);
        }

        private void DoMyClickAction(int x = 0, int y = 0)
        {
            mCheckedListBox.Items.Clear();
            mCheckedListBox.Items.Add("Exceeding", blnExceedingClick);
            foreach (DataGridViewColumn c in dgvBreakAmount.Columns)
            {
                mCheckedListBox.Items.Add(c.HeaderText, c.Visible);
            }
            // mCheckedListBox.Items.Insert(0,"Exceeding");

            int PreferredHeight = (mCheckedListBox.Items.Count * 16) + 7;
            mCheckedListBox.Height = (PreferredHeight < MaxHeight) ? PreferredHeight : MaxHeight;
            mCheckedListBox.Width = this.Width;
            mPopup.Show(dgvBreakAmount.PointToScreen(new Point(1000, 50)));
        }

        void mCheckedListBox_ItemCheck(object sender, ItemCheckEventArgs e)
        {
            if (e.Index != 0)
                dgvBreakAmount.Columns[e.Index - 1].Visible = (e.NewValue == CheckState.Checked);
            //mCheckedListBox.Items.Insert(0, "Exceeding");

            if (e.Index == 0)
            {
                lblExceeding.Visible = (e.NewValue == CheckState.Checked);
                blnExceedingClick = e.NewValue == CheckState.Checked ? true : false;
            }

        }

For ex: mCheckedListBox.Items.Add("Exceeding", blnExceedingClick); i need to add more items like this, if i added more than 1,either one will work. Give me a solution. thanku