如何设置来自Html.Dropdownlist中的querystring的默认值

Question

我试图在下拉列表中设置默认值，该默认值来自作为查询字符串传递的另一页。

@Html.DropDownListFor(x => Model.Products, new SelectList(Model.Products.Select(x => x.Name)),
                        "Select a Product",
                        new {@class = "product-form__selector", ID = "product-field", required = "required"})