private void InitializeCombo()
        {
            ddlFromCostCentre.DataSource     = hkManager.GetAllHouseKeeping(3);
            ddlFromCostCentre.DataTextField  = "HKName";
            ddlFromCostCentre.DataValueField = "HKID";
            ddlFromCostCentre.DataBind();
            ddlFromCostCentre.Items.Insert(0, new ListItem(String.Empty, String.Empty));
            ddlFromCostCentre.SelectedIndex = 0;

            ddlFromStockLocation.DataSource     = hkManager.GetAllHouseKeeping(11);
            ddlFromStockLocation.DataTextField  = "HKName";
            ddlFromStockLocation.DataValueField = "HKID";
            ddlFromStockLocation.DataBind();
            ddlFromStockLocation.Items.Insert(0, new ListItem(String.Empty, String.Empty));
            ddlFromStockLocation.SelectedIndex = 0;

            ddlToCostCentre.DataSource     = hkManager.GetAllHouseKeeping(3);
            ddlToCostCentre.DataTextField  = "HKName";
            ddlToCostCentre.DataValueField = "HKID";
            ddlToCostCentre.DataBind();
            ddlToCostCentre.Items.Insert(0, new ListItem(String.Empty, String.Empty));
            ddlToCostCentre.SelectedIndex = 0;

            ddlToStockLocation.DataSource     = hkManager.GetAllHouseKeeping(11);
            ddlToStockLocation.DataTextField  = "HKName";
            ddlToStockLocation.DataValueField = "HKID";
            ddlToStockLocation.DataBind();
            ddlToStockLocation.Items.Insert(0, new ListItem(String.Empty, String.Empty));
            ddlToStockLocation.SelectedIndex = 0;


            ddlFromBranch.DataSource     = hkManager.GetAllHouseKeeping(31);
            ddlFromBranch.DataTextField  = "HKName";
            ddlFromBranch.DataValueField = "HKID";
            ddlFromBranch.DataBind();
            ddlFromBranch.Items.Insert(0, new ListItem(String.Empty, String.Empty));
            ddlFromBranch.SelectedIndex = 0;

            ddlToBranch.DataSource     = hkManager.GetAllHouseKeeping(31);
            ddlToBranch.DataTextField  = "HKName";
            ddlToBranch.DataValueField = "HKID";
            ddlToBranch.DataBind();
            ddlToBranch.Items.Insert(0, new ListItem(String.Empty, String.Empty));
            ddlToBranch.SelectedIndex = 0;

            ddlCurrencyID.DataSource     = _CurrencyManager.GetAllGen_Currency();
            ddlCurrencyID.DataTextField  = "CurrencyName";
            ddlCurrencyID.DataValueField = "CurrencyKey";
            ddlCurrencyID.DataBind();
            ddlCurrencyID.Items.Insert(0, new ListItem(String.Empty, String.Empty));
            ddlCurrencyID.SelectedIndex = 0;

            ddlParty.DataSource     = _contactInfoManager.GetAllSupplier();
            ddlParty.DataTextField  = "Name";
            ddlParty.DataValueField = "ContactID";
            ddlParty.DataBind();
            ddlParty.Items.Insert(0, new ListItem(String.Empty, String.Empty));
            ddlParty.SelectedIndex = 0;
        }