Dim*_*kiy 15 .net c# razor asp.net-mvc-3
我有Razor引擎的MVC 3 C#项目.有什么方法,我想,将动态数据写入_Layout.cshtml的最佳做法是什么？
例如,也许我想在我的网站的右上角显示用户名,并且该名称来自会话,数据库或其他任何基于用户登录的内容.
更新:我也在寻找将某些数据渲染到布局元素的良好实践.例如,如果我需要根据登录用户的凭据呈现特定的CSS文件.
(对于上面的例子,我想过使用Url Helpers.)
atb*_*btg 19
visual studio创建的默认Internet应用程序使用_LogOnPartial.cshtml来完成此操作.
用户名值在HomeController的LogOn操作中设置
_LogOnPartial.cshtml的代码
@if(Request.IsAuthenticated) {
<text>Welcome <strong>@User.Identity.Name</strong>!
[ @Html.ActionLink("Log Off", "LogOff", "Account") ]</text>
}
else {
@:[ @Html.ActionLink("Log On", "LogOn", "Account") ]
}
User.Identity是aspnet成员资格提供程序的一部分.
_Layout.cshtml的代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>@ViewBag.Title</title>
<link href="@Url.Content("~/Content/Site.css")" rel="stylesheet" type="text/css" />
<script src="@Url.Content("~/Scripts/jquery-1.5.1.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/modernizr-1.7.min.js")" type="text/javascript"></script>
</head>
<body>
<div class="page">
<header>
<div id="title">
<h1>Test</h1>
</div>
<div id="logindisplay">
@Html.Partial("_LogOnPartial")
</div>
<nav>
<ul id="menu">
</ul>
</nav>
</header>
<section id="main">
@RenderBody()
</section>
<footer>
</footer>
</div>
</body>
</html>
AccountController登录操作的代码
[HttpPost]
public ActionResult LogOn(LogOnModel model, string returnUrl)
{
if (ModelState.IsValid)
{
if (Membership.ValidateUser(model.UserName, model.Password))
{
FormsAuthentication.SetAuthCookie(model.UserName, model.RememberMe);
if (Url.IsLocalUrl(returnUrl) && returnUrl.Length > 1 && returnUrl.StartsWith("/")
&& !returnUrl.StartsWith("//") && !returnUrl.StartsWith("/\\"))
{
return Redirect(returnUrl);
}
else
{
return RedirectToAction("Index", "Home");
}
}
else
{
ModelState.AddModelError("", "The user name or password provided is incorrect.");
}
}
// If we got this far, something failed, redisplay form
return View(model);
}
ApplicationViewPage类的代码
public abstract class ApplicationViewPage<T> : WebViewPage<T>
{
protected override void InitializePage()
{
SetViewBagDefaultProperties();
base.InitializePage();
}
private void SetViewBagDefaultProperties()
{
ViewBag.LayoutModel = new LayoutModel(Request.ServerVariables["SERVER_NAME"]);
}
}
上面的代码允许我有一个ViewBag.LayoutModel,它在每个页面中都包含我的LayoutModel类的实例.
这是我的LayoutModel类的代码
public class LayoutModel
{
public string LayoutFile { get; set; }
public string IpsTop { get; set; }
public string IpsBottom { get; set; }
public string ProfileTop { get; set; }
public string ProfileBottom { get; set; }
public LayoutModel(string hostname)
{
switch (hostname.ToLower())
{
default:
LayoutFile = "~/Views/Shared/_BnlLayout.cshtml";
IpsBottom = "~/Template/_BnlIpsBottom.cshtml";
IpsTop = "~/Template/_BnlTop.cshtml";
ProfileTop = "~/Template/_BnlProfileTop.cshtml";
break;
case "something.com":
LayoutFile = "~/Views/Shared/_Layout.cshtml";
IpsBottom = "~/Template/_somethingBottom.cshtml";
IpsTop = "~/Template/_somethingTop.cshtml";
ProfileTop = "~/Template/_somethingProfileTop.cshtml";
break;
}
}
}
这是View的代码
@{
ViewBag.Title = "PageTitle";
Layout = @ViewBag.LayoutModel.LayoutFile;
}
@using (Html.BeginForm())
{
<span class="error">@ViewBag.ErrorMessage</span>
<input type="hidden" name="Referrer" id="Referrer" value="@ViewBag.Referrer" />
html stuff here
}
有关更多详细信息,请参阅以下问题.确保修改web.config,如下所述:如何在不使用控制器基类的情况下为所有视图设置ViewBag属性？