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直入主题：

ViewDataViewBag

它是Key/Value字典集合它是dynamic类型对像

从Asp.net MVC 1 就有了ASP.NET MVC3 才有

基于Asp.net 3.5 framework基于Asp.net 4.0与.net framework

ViewData比ViewBag快ViewBag比ViewData慢

在ViewPage中查询数据时需要转换合适的类型在ViewPage中查询数据时不需要类型转换

有一些类型转换代码可读性更好

在Controller中使用ViewData:

public ActionResult UsingViewData(){ViewData["Title"] = " Using ViewData";ViewData["ProjectName"] = "My Test Project";ViewData["ProjectDescription"] = "This is Test Project to demo Viewdata and viewbag details";ViewData["StartDate"] = new DateTime(2011, 1, 1);ViewData["TotalPrice"] = 1000;ViewData["TotalDays"] = 100;Dictionary<string, string> stackholder = new Dictionary<string, string>();stackholder.Add("Client","Mr. Client");stackholder.Add("Manager","Mr. Joy");stackholder.Add("Team Leader","Mr.Toy");stackholder.Add("Sr. developer", "Mr.dojoy");stackholder.Add("developer", "Mr. nodoy");ViewData["stackholder"] = stackholder;List<string> modules = new List<string>();modules.Add("Admin module");modules.Add("ShoppingCart module");modules.Add("CMS module");ViewData["modules"] = modules;return View();}

对应UsingViewData View的cshtml:

<h1>@ViewData["Title"]</h1> <div> <div><h2>Project Name : @ViewData["ProjectName"]</h2> </div> <div>ProjectDescription :<p>"@ViewData["ProjectDescription"]".</p> </div> <div>Stack Holder :<br /><ul id="stakholder">@foreach ( var stakerholder in ViewData["stackholder"] as Dictionary<string, string> ){<li>@stakerholder.Key   : @stakerholder.Value</li>}</ul> </div> <div>Project Details:<br /><div>module List :<ul id="modulelist">@foreach ( var module in ViewData["modules"] as List<string> ){<li>@module</li>}</ul></div>Project StartDate : @ViewData["StartDate"] <br />Project TotalPrice: @ViewData["TotalPrice"] <br />Project TotaDays : @ViewData["TotalDays"]</div> </div>

然后是ViewBag:

public ActionResult UsingViewBag(){ViewBag.Title = " Using ViewBag";ViewBag.ProjectName = "My Test Project";ViewBag.ProjectDescription = "This is Test Project to demo Viewdata and viewbag details";ViewBag.StartDate = new DateTime(2011, 1, 1);ViewBag.TotalPrice = 1000;ViewBag.TotalDays = 100;Dictionary<string, string> stackholder = new Dictionary<string, string>();stackholder.Add("Client", "Mr. Client");stackholder.Add("Manager", "Mr. Joy");stackholder.Add("Team Leader", "Mr.Toy");stackholder.Add("Sr. developer", "Mr.dojoy");stackholder.Add("developer", "Mr. nodoy");ViewBag.stackholder = stackholder;List<string> modules = new List<string>();modules.Add("Admin module");modules.Add("ShoppingCart module");modules.Add("CMS module");ViewBag.modules = modules;return View();}

对应View UsingViewBag 的cshtml的ViewBag:

<h1>@ViewBag.Title</h1> <div> <div><h2>Project Name : @ViewBag.ProjectName</h2> </div> <div>ProjectDescription :<p>"@ViewBag.ProjectDescription.</p> </div> <div>Stack Holder :<br /><ul id="stakholder">@foreach ( var stakerholder in ViewBag.stackholder ){<li>@stakerholder.Key   : @stakerholder.Value</li>}</ul> </div> <div>Project Details:<br /><div>module List :<ul id="modulelist">@foreach ( var module in ViewBag.modules ){<li>@module</li>}</ul></div>Project StartDate : @ViewBag.StartDate.ToString("dd-MMM-yyyy") <br />Project TotalPrice: @ViewBag.TotalPrice <br />Project TotaDays : @ViewBag.TotalDays</div> </div>

后面是在Controller中使用ViewBag:后面是在Controller中使用ViewBag:后面是在Controller中使用ViewBag:后面是在Controller中使用ViewBag:后面是在Controller中使用ViewBag:后面是在Controller中使用ViewBag:后面是在Controller中使用ViewBag:后面是在Controller中使用ViewBag:后面是在Controller中使用ViewBag:后面是在Controller中使用ViewBag:后面是在Controller中使用ViewBag:

public ActionResult UsingViewBagInControlAndViewDataInView(){ViewBag.Title = " Using ViewBag In Control And ViewData In View";ViewBag.ProjectName = "My Test Project";ViewBag.ProjectDescription = "This is Test Project to demo Viewdata and viewbag details";ViewBag.StartDate = new DateTime(2011, 1, 1);ViewBag.TotalPrice = 1000;ViewBag.TotalDays = 100;Dictionary<string, string> stackholder = new Dictionary<string, string>();stackholder.Add("Client", "Mr. Client");stackholder.Add("Manager", "Mr. Joy");stackholder.Add("Team Leader", "Mr.Toy");stackholder.Add("Sr. developer", "Mr.dojoy");stackholder.Add("developer", "Mr. nodoy");ViewBag.stackholder = stackholder;List<string> modules = new List<string>();modules.Add("Admin module");modules.Add("ShoppingCart module");modules.Add("CMS module");ViewBag.modules = modules;return View();}

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