private void ItemMaster_Load(object sender, EventArgs e)
        {
            this.UnitItems.Insert(0, new ComboBoxItem() { Text = "--Select Measure unit--", Value = "0" });
            comboBoxItemBindingSource.DataSource = this.UnitItems;

            BrandProvider brandProvider = new BrandProvider();
            VendorProvider vendorProvider = new VendorProvider();

            //Bind Dropdown controls
            var brands = brandProvider.GetAllForDropDown();
            brands.Insert(0, new ComboBoxItem() { Value = "0", Text = "--Select Brand--" });
            this.ddBrand.DataSource = brands;

            var vendors = vendorProvider.GetAllForDropDown();
            vendors.Insert(0, new ComboBoxItem() { Value = "0", Text = "--Select Vendor--" });
            this.ddPrefferedVendor.DataSource = vendors;

            BindItemsList();
            ddMeasureUnits.SelectedValue = "0";
            ddBrand.SelectedValue = "0";
            ddPrefferedVendor.SelectedValue = "0";
        }