将 Html.BeginForm 与查询字符串一起使用
我的网址如下所示：
customer/login?ReturnUrl=home
在登录视图中，我使用了这种工作正常的代码模式。
@using(Html.BeginForm())
{
...
}
这神奇地生成了以下 html
<form action="customer/login?ReturnUrl=home" method="post">
但现在，我需要在表单中添加一个属性（例如，data-id="something"）。我怎样才能做到这一点？如果我没有任何查询字符串，我知道我可以这样做：
@using(Html.BeginForm(action, controller, FormMethod.Post,
new { data_id="something" }))
但不知道如何添加应该在html中的查询字符串：
<form action="customer/login?ReturnUrl=home" method="post" data-id="something">
我考虑过直接使用
解决方案：
目前，我使用了
<form action="@Request.Url.PathAndQuery" data-id="something" method="POST">
，但是最好有一个 BeginForm 的重载方法来实现这一点。
My url looks like this:
customer/login?ReturnUrl=home
In the login view, I have used this pattern of code which works fine.
@using(Html.BeginForm())
{
...
}
This magically generates following html
<form action="customer/login?ReturnUrl=home" method="post">
But now, I need to add an attribute (e.g., data-id="something") in the form. How can I do that? If I don't have any query string, I know I can do something like this:
@using(Html.BeginForm(action, controller, FormMethod.Post,
new { data_id="something" }))
But don't know how to add querystring which should be in html:
<form action="customer/login?ReturnUrl=home" method="post" data-id="something">
I thought about using <form> directly but don't know how to specify querystring which is variable. And I have no idea how to achieve it with Html.BeginForm. Any tip would be appreciated.
RESOLUTION:
For now, I used <form> with following hint How to get current url value in View. The resulting view looks like
<form action="@Request.Url.PathAndQuery" data-id="something" method="POST">
But it would be nice to have an overloaded method of BeginForm for this.
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评论（7）
这是对我有用的方法，
这几乎就像重载方法存在问题，但通过指定事物是什么，它似乎工作得很好......
Here's The way that worked for me
It was almost like there was a problem with overloading the method, but by specifying what things are, it seems to work fine...
我想这并不能直接回答问题，但为什么不直接使用普通的旧表单标签呢？
或者，您可以创建一个自定义 HtmlHelperExtension 来呈现带有路径和查询字符串的表单。在此 HtmlHelperExtension 中，您可以迭代查询字符串值并填充routeValueDictionary，然后将其传递给 Html.BeginForm 构造函数。
如果您不想要如此可扩展的东西，您可以使用 Html.BeginForm 的重载构造函数
@Html.BeginForm("login", "customer", new {ReturnUrl = @Request.QueryString["ReturnUrl"]},FormMethod.Post, new {data-id="something"});I guess this doesn't directly answer the question, but why not just use a plain old form tag?
Alternatively, you can create a custom HtmlHelperExtension that renders a form with path and querystring. In this HtmlHelperExtension you can iterate through your querystring values and populate the routeValueDictionary which you then pass to a Html.BeginForm constructor.
If you don't want something so extensible you can just use the overloaded constructor of Html.BeginForm using
@Html.BeginForm("login", "customer", new {ReturnUrl = @Request.QueryString["ReturnUrl"]},FormMethod.Post, new {data-id="something"});要从查询字符串创建 RouteValueDictionary：
然后您可以将其与 Html.BeginForm 一起使用：
To create a RouteValueDictionary from the querystring:
Then you can use it with Html.BeginForm:
使用Reflector查看代码，
BeginForm()将直接将rawUrl传递给最终的Form。
BeginForm 上的任何其他重载都将通过辅助实用程序来删除查询字符串。
using Reflector to look at the code,
BeginForm() will pass directly the rawUrl over to the final Form.
Any other overloads on BeginForm will go through a helper utility which will strip the query string.
以防万一您还想添加其他属性。使用下面的代码
Just incase you wanted to add other attributes as well. use below code
这对我有用：
需要明确的路由值和方法......
This works for me :
Explicit route values and method is what is required...
尝试
@using(Html.BeginForm(null, null, FormMethod.Post, new { data_id="something" }))它应该使用默认逻辑来构造 url，就像您使用 < code>BeginForm()
（虽然在这种情况下从未尝试过，但我相信它应该有效）
Try
@using(Html.BeginForm(null, null, FormMethod.Post, new { data_id="something" }))It should use the default logic to construct the url, just as if you used
BeginForm()(never tried that though in such case, but I believe it should work)