在MVC中Controller为VIEW页面中的DropDownList赋值并锁定

首先是枚举对象的遍历

#region 类型列表框

            typeitems = new List<SelectListItem>();

            foreach (string i in Enum.GetNames(typeof(ServiceDocumentType)))

                typeitems.Add(new SelectListItem { Text = ((ServiceDocumentType)
                Enum.Parse(typeof(ServiceDocumentType), i)).GetDescription(), 
                Value = ((int)((ServiceDocumentType)
                Enum.Parse(typeof(ServiceDocumentType), i))).ToString() });

            #endregion

当有了上面基础后，再根据传入到当前实体，锁定当然选中的项

 ServiceDocumentCreateModel model = new ServiceDocumentCreateModel

                ProductID = entity.ProductID,

                Content = entity.Content,

                DownloadUrl = entity.DownloadUrl,

                ImageUrl = entity.ImageUrl,

                Level = entity.Level,

                LinkUrl = entity.LinkUrl,

                Title = entity.Title,

                Type = new SelectList(typeitems, "Value", "Text", (int)entity.Type),

                Status = new SelectList(statusItems, "Value", "Text", (int)entity.Status),

};

其中Type和Status都是SelectList类型，这样方便前台Model在VIEW中的展示。

前台中展示就一句搞定：

  <%=Html.DropDownList("Type",Model.Type)%>