asp.net-mvc Html.BeginForm 并添加属性
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Html.BeginForm and adding properties
提问by KevinUK
How would I go about adding enctype="multipart/form-data"to a form that is generated by using <% Html.BeginForm(); %>?
我将如何添加enctype="multipart/form-data"到使用生成的表单<% Html.BeginForm(); %>？
回答by liggett78
As part of htmlAttributes,e.g.
作为 htmlAttributes 的一部分，例如
Html.BeginForm(
action, controller, FormMethod.Post, new { enctype="multipart/form-data"})
Or you can pass nullfor action and controller to get the same default target as for BeginForm() without any parameters:
或者你可以传递null给 action 和 controller 以获得与 BeginForm() 相同的默认目标，而无需任何参数：
Html.BeginForm(
null, null, FormMethod.Post, new { enctype="multipart/form-data"})
回答by dp.
You can also use the following syntax for the strongly typed version:
您还可以对强类型版本使用以下语法：
<% using (Html.BeginForm<SomeController>(x=> x.SomeAction(),
FormMethod.Post,
new { enctype = "multipart/form-data" }))
{ %>
回答by Nick Olsen
I know this is old but you could create a custom extension if you needed to create that form over and over:
我知道这是旧的，但如果您需要一遍又一遍地创建该表单，您可以创建一个自定义扩展：
public static MvcForm BeginMultipartForm(this HtmlHelper htmlHelper)
{
return htmlHelper.BeginForm(null, null, FormMethod.Post,
new Dictionary<string, object>() { { "enctype", "multipart/form-data" } });
}
Usage then just becomes
用法然后就变成
<% using(Html.BeginMultipartForm()) { %>
