制作MVC4分页控件的示例分析-创新互联
这篇文章将为大家详细讲解有关制作MVC4分页控件的示例分析,小编觉得挺实用的,因此分享给大家做个参考,希望大家阅读完这篇文章后可以有所收获。
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修改后的PagerConfig说明
PagerConfig类
////// 分页配置 /// public class PagerConfig { ////// 当前页 /// public int CurrentPage { get; set; } ////// 每页记录数 /// public int PageSize { get; set; } ////// 总页数 /// public int TotalPage { get { return (int)Math.Ceiling(TotalRecord / (double)PageSize); } } ////// 总记录数 /// public int TotalRecord { get; set; } ////// 记录单位 /// public string RecordUnit { get; set; } ////// 记录名称 /// public string RecordName { get; set; } public PagerConfig() { CurrentPage = 1; PageSize = 20; RecordUnit = "条"; RecordName = "记录"; } }
后面要修改栏目模型用来保存分页设置
Category模型字段说明
修改后的栏目模型类
////// 栏目模型 /// public class Category { [Key] [Display(Name = "栏目Id")] public int CategoryId { get; set; } ////// 栏目名称 /// [Display(Name="栏目名称",Description="2-20个字符")] [Required(ErrorMessage="×")] [StringLength(50,ErrorMessage="×")] public string Name { get; set; } ////// 父栏目编号 /// [Display(Name="父栏目")] [Required(ErrorMessage="×")] public int ParentId { get; set; } ////// 父栏目路径【根节点的值为0,子节点的值为:0,1,6,76】 /// [Required()] public string ParentPath { get; set; } ////// 栏目类型【0-常规栏目;1-单页栏目;2-外部链接】 /// [Display(Name="栏目类型")] [Required(ErrorMessage = "×")] public int Type { get; set; } ////// 内容模型【仅在栏目为普通栏目时有效】 /// [Display(Name="内容模型")] [StringLength(50, ErrorMessage = "×")] public string Model { get; set; } ////// 栏目视图 /// [Display(Name = "栏目视图", Description = "栏目页的视图,最多255个字符。。")] [StringLength(255, ErrorMessage = "×")] public string CategoryView { get; set; } ////// 内容页视图 /// [Display(Name = "内容视图", Description = "内容页视图,最多255个字符。。")] [StringLength(255, ErrorMessage = "×")] public string ContentView { get; set; } ////// 链接地址 /// [Display(Name="链接地址",Description="点击栏目时跳转到的链接地址,最多255个字符。")] [StringLength(255,ErrorMessage = "×")] public string LinkUrl { get; set; } ////// 栏目排序 /// [Display(Name = "栏目排序", Description = "针对同级栏目,数字越小顺序越靠前。")] [Required(ErrorMessage = "×")] public int Order { get; set; } ////// 内容排序 /// [Display(Name = "内容排序", Description = "栏目所属内容的排序方式。")] public int? ContentOrder { get; set; } ////// 每页记录数 /// [Display(Name = "每页记录数", Description = "栏目所属内容的排序方式。")] public int? PageSize { get; set; } ////// 记录单位 /// [Display(Name = "记录单位", Description = "记录的数量单位。如文章为“篇”;新闻为“条”。")] [StringLength(255, ErrorMessage = "×")] public string RecordUnit { get; set; } ////// 记录名称 /// [Display(Name = "记录名称", Description = "记录的名称。如“文章”、“新闻”、“教程”等。")] [StringLength(255, ErrorMessage = "×")] public string RecordName { get; set; } public Category() { ParentPath = "0"; Type = 0; CategoryView = "Index"; ContentView = "Index"; Order = 0; ContentOrder = 1; PageSize = 20; RecordUnit = "条"; RecordName = "篇"; } }
由于栏目的模型字段发生变换 添加 修改栏目信息的视图和action也要进行相应修改。
修改ManageAdd视图
@model Ninesky.Models.Category @{ ViewBag.Title = "ManageAdd"; Layout = "~/Views/Layout/_Manage.cshtml"; }添加栏目@using (Html.BeginForm()) { @Html.ValidationSummary(true) }@Html.Action("ManagePartialTree", "Category")@section Scripts { @Scripts.Render("~/bundles/jqueryval") }
修改ManageAdd(Category category),主要是首先验证选定的父栏目是否存在。根据选定的栏目类型验证相应的字段是否输入,设置无关字段为null
[AdminAuthorize] [HttpPost] public ActionResult ManageAdd(Category category) { //父栏目是否存在 if (categoryRsy.Find(category.ParentId) == null) ModelState.AddModelError("ParentId", "父栏目不存在。"); //ParentPath if (category.ParentId == 0) category.ParentPath = "0"; else category.ParentPath = categoryRsy.Find(category.ParentId).ParentPath + "," + category.ParentId; switch (category.Type) { case 0://常规栏目 if (string.IsNullOrEmpty(category.CategoryView)) ModelState.AddModelError("CategoryView", "×"); category.LinkUrl = null; if (!string.IsNullOrEmpty(category.Model)) { if (string.IsNullOrEmpty(category.ContentView)) ModelState.AddModelError("ContentView", "×"); if (category.ContentOrder == null) category.ContentOrder = 0; if (category.PageSize == null) category.PageSize = 20; if (string.IsNullOrEmpty(category.RecordUnit)) category.RecordUnit = "条"; if (string.IsNullOrEmpty(category.RecordName)) category.RecordName = "记录"; } else { category.ContentView = null; category.ContentOrder = null; category.PageSize = null; category.RecordUnit = null; category.RecordName = null; } break; case 1://单页栏目 if (string.IsNullOrEmpty(category.CategoryView)) ModelState.AddModelError("CategoryView", "×"); category.LinkUrl = null; category.ContentView = null; category.ContentOrder = null; category.PageSize = null; category.RecordUnit = null; category.RecordName = null; break; case 2://外部链接 if (string.IsNullOrEmpty(category.LinkUrl)) ModelState.AddModelError("LinkUrl", "×"); category.CategoryView = null; category.ContentView = null; category.ContentOrder = null; category.PageSize = null; category.RecordUnit = null; category.RecordName = null; break; default: ModelState.AddModelError("Type", "×"); break; } if (ModelState.IsValid) { if (categoryRsy.Add(category)) { Notice _n = new Notice { Title = "添加栏目成功", Details = "您已经成功添加[" + category.Name + "]栏目!", DwellTime = 5, NavigationName = "栏目列表", NavigationUrl = Url.Action("ManageDefault", "Category") }; return RedirectToAction("ManageNotice", "Prompt", _n); } else { Error _e = new Error { Title = "添加栏目失败", Details = "在添加栏目时,未能保存到数据库", Cause = "系统错误", Solution = Server.UrlEncode("
下面就该栏目详细信息的视图ManageDetails.cshtml,基本与ManageAdd视图。
然后修改更新栏目信息action [ManageUpdate(Category category)]。
在这里1、要检查父栏目是不是其本身或其子栏目,如果是添加验证未通过信息。2、根据选定的栏目类型验证相应的字段是否输入,设置无关字段为null。3、如果父栏目发生更还,更改其本身及其子栏目的ParentPath。
////// 修改栏目信息 /// /// ///public ActionResult ManageUpdate(Category category) { //父栏目不能为本身或子栏目 if (categoryRsy.IsSelfOrLower(category.CategoryId,category.ParentId)) ModelState.AddModelError("ParentId", "父栏目不能是其本身或其子栏目"); switch (category.Type) { case 0://常规栏目 if (string.IsNullOrEmpty(category.CategoryView)) ModelState.AddModelError("CategoryView", "×"); category.LinkUrl = null; if (!string.IsNullOrEmpty(category.Model)) { if (string.IsNullOrEmpty(category.ContentView)) ModelState.AddModelError("ContentView", "×"); if (category.ContentOrder == null) category.ContentOrder = 0; if (category.PageSize == null) category.PageSize = 20; if (string.IsNullOrEmpty(category.RecordUnit)) category.RecordUnit = "条"; if (string.IsNullOrEmpty(category.RecordName)) category.RecordName = "记录"; } else { category.ContentView = null; category.ContentOrder = null; category.PageSize = null; category.RecordUnit = null; category.RecordName = null; } break; case 1://单页栏目 if (string.IsNullOrEmpty(category.CategoryView)) ModelState.AddModelError("CategoryView", "×"); category.LinkUrl = null; category.ContentView = null; category.ContentOrder = null; category.PageSize = null; category.RecordUnit = null; category.RecordName = null; break; case 2://外部链接 if (string.IsNullOrEmpty(category.LinkUrl)) ModelState.AddModelError("LinkUrl", "×"); category.CategoryView = null; category.ContentView = null; category.ContentOrder = null; category.PageSize = null; category.RecordUnit = null; category.RecordName = null; break; default: ModelState.AddModelError("Type", "×"); break; } if (ModelState.IsValid) { var _pId = categoryRsy.Find(category.CategoryId).ParentId; var _oldParentPath = categoryRsy.Find(category.CategoryId).ParentPath + "," + category.CategoryId; //父栏目发生更改 if (category.ParentId != _pId) { //ParentPath if (category.ParentId == 0) category.ParentPath = "0"; else category.ParentPath = categoryRsy.Find(category.ParentId).ParentPath + "," + category.ParentId; } if (categoryRsy.Update(category)) { Notice _n = new Notice { Title = "修改栏目成功", Details = "修改栏目成功!", DwellTime = 5, NavigationName = "栏目详细信息", NavigationUrl = Url.Action("ManageDetails", "Category", new { id = category.CategoryId }) }; if (_oldParentPath != category.ParentPath) { //修改子栏目ParentPath categoryRsy.UpdateCategorysParentPath(_oldParentPath, category.ParentPath+"," + category.CategoryId); } return RedirectToAction("ManageNotice", "Prompt", _n); } else { Error _e = new Error { Title = "修改栏目失败", Details = "在修改栏目信息时,未能保存到数据库", Cause = "系统错误", Solution = Server.UrlEncode("
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