使用 HTML.ActionLink 的 ASP.net MVC site.master 链接
我的 site.master 中有以下菜单代码：
<ul id="menu">
<li><%= Html.ActionLink("My Contact Info", "DetailsbyUserName/" + Html.Encode(Page.User.Identity.Name), "Users")%></li>
</ul>
当我将鼠标悬停在 URL 上时，我看到它指向：
http://site/Users/DetailbyUserName/[name]
这是正确的。
问题是，当我在下面的 Users 控制器类中放置断点时：
public ActionResult DetailsbyUserName(string loginName)
{
UserInfo user = repo.GetUserByName(loginName);
return View(user);
}
似乎 loginName 参数始终为 null。
有什么建议么？
I have the following code in my site.master for a menu:
<ul id="menu">
<li><%= Html.ActionLink("My Contact Info", "DetailsbyUserName/" + Html.Encode(Page.User.Identity.Name), "Users")%></li>
</ul>
When I hover over the URL I see that it points to:
http://site/Users/DetailbyUserName/[name]
which is correct.
The issue is that when I put a breakpoint in the Users controller class below:
public ActionResult DetailsbyUserName(string loginName)
{
UserInfo user = repo.GetUserByName(loginName);
return View(user);
}
it seems that the loginName parameter is always null.
Any suggestions?
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问题是您没有设置路由来指定名为“loginName”的参数。
我猜测您的默认路由正在吞噬您的请求，并尝试将 [name] 值分配给名为“id”的参数。 如果您将参数名称从“loginName”更改为“id”，我敢打赌它会对您有用。
请记住，路由引擎将每个 URL 段映射到一个命名参数。 默认路由如下所示：
“{controller}/{action}/{id}”。 如果您想要一个名为“loginName”的参数，则必须提供一个包含段"{controller}/{action}/{loginName}"的 Route，这与默认路由，这样默认路由就不会先匹配到它。The problem is that you don't have a Route set up to specify a parameter called "loginName".
I'm guessing that your default Route is swallowing your request, and trying to assign the [name] value to a parameter called "id". If you change the name of the parameter to "id" from "loginName", I bet it will work for you.
Remember that the routing engine maps each URL segment to a named parameter. The default route looks like:
"{controller}/{action}/{id}". If you want to have a parameter named "loginName", you would have to come up with a Route that had the segments"{controller}/{action}/{loginName}", that was different from the default route, so that the default route didn't match it first.尝试：
如果您的控制器是这样的：
我想您必须在 ActionLink 的 RouteValues 参数中使用 new {veryVeryLongParameterName = "YourParamValue" } 。
而且，您还需要一条路线。
我对此也很陌生，至少这是我对 ActionLinks 的理解，希望有人能更好地解释它。
try:
if your controller is something like this:
I guess you have to use new { veryVeryLongParameterName = "YourParamValue" } in the ActionLink's routeValues parameter.
And also, you need a route for that.
I'm very new to this too, at least that's what I understood about ActionLinks, hope someone can explain it better.