private void CompanyList(StockOutViewModel stockOutViewModel) { companyDropDownList.DataSource = stockOutManager.GetAllCompanyFromStock(stockOutViewModel); companyDropDownList.DataTextField = "CompanyName"; companyDropDownList.DataValueField = "CompanySl"; companyDropDownList.DataBind(); companyDropDownList.Items.Insert(0, new ListItem("Select a Company")); }