private void btn_view_Click(object sender, EventArgs e)
        {
            cbxFindItemCategory.Text    = "";
            cbxFindItemSubCategory.Text = "";

            pnl_Rpot_sales.Controls.Clear();
            Rpot_Sales1 rsale = new Rpot_Sales1();

            rsale.TopLevel = false;
            rsale.Visible  = true;
            pnl_Rpot_sales.Controls.Add(rsale);
        }
        private void Rpot_Sales_Load(object sender, EventArgs e)
        {
            DateTime tdy = DateTime.Now.AddDays(1);

            dateTimePicker_to.Text = tdy.ToShortDateString();

            dtpFrom     = dateTimePicker_From;
            dtpTo       = dateTimePicker_to;
            cb_ctogy    = cbxFindItemCategory;
            cb_Subctogy = cbxFindItemSubCategory;

            String         csql = "SELECT*FROM tbl_catogory";
            SqlDataAdapter cget = new SqlDataAdapter(csql, ConnectionDB.Connection());
            DataTable      cdt  = new DataTable();

            cget.Fill(cdt);
            for (int i = 0; i < cdt.Rows.Count; i++)
            {
                cbxFindItemCategory.Items.Add(cdt.Rows[i]["catogory"]);
            }



            cbxFindItemCategory.Text    = "";
            cbxFindItemSubCategory.Text = "";

            pnl_Rpot_sales.Controls.Clear();
            Rpot_Sales1 rsale = new Rpot_Sales1();

            rsale.TopLevel = false;
            rsale.Visible  = true;
            pnl_Rpot_sales.Controls.Add(rsale);



            cbxFindItemCategory.DropDownStyle      = System.Windows.Forms.ComboBoxStyle.DropDown;
            cbxFindItemCategory.AutoCompleteMode   = AutoCompleteMode.SuggestAppend;
            cbxFindItemCategory.AutoCompleteSource = AutoCompleteSource.ListItems;
        }