private void CompanyInfo_Load(object sender, EventArgs e) { panels = new List <Panel>() { panel1, panel2, panel3 }; pictures = new List <PictureBox>() { pictureBox1, pictureBox2, pictureBox3, pictureBox4, pictureBox5, pictureBox6, pictureBox7, pictureBox8, pictureBox9 }; headers = new List <string>() { "COMPANY INFO", "PRODUCT INFO", "Product Dimention" }; cmbcolors.DataSource = drop.listColors(); cmbcolors.DisplayMember = "Name"; cmbcolors.ValueMember = "Id"; cmbCountry.DataSource = drop.countries(); cmbCountry.DisplayMember = "Name"; cmbCountry.ValueMember = "id"; cmbCountryofOrgin.DataSource = drop.countries(); cmbCountryofOrgin.DisplayMember = "Name"; cmbCountryofOrgin.ValueMember = "id"; cmbMaterial.DataSource = drop.listMaterial(); cmbMaterial.DisplayMember = "MaterialName"; cmbMaterial.ValueMember = "id"; cmbCategory.DataSource = drop.categories(); cmbCategory.DisplayMember = "Name"; cmbCategory.ValueMember = "Id"; cmbSubCategory.DataSource = drop.subCategories(); cmbSubCategory.DisplayMember = "Name"; cmbSubCategory.ValueMember = "Id"; cmbSubCategory.Enabled = false; cmbProductType.DataSource = drop.productTypes(); cmbProductType.DisplayMember = "Name"; cmbProductType.ValueMember = "Id"; cmbProductType.Enabled = false; cmbBrand.DataSource = drop.brands(); cmbBrand.DisplayMember = "Name"; cmbBrand.ValueMember = "Id"; }