传入Html.BeginForm MVC4控制器操作多个参数 [英] Pass multiple parameters in Html.BeginForm MVC4 controller action

问题描述

我有这样的事情：

   public ActionResult ImageReplace(int imgid,HttpPostedFileBase file)
    {
        string keyword = imgid.ToString();
        .......
    }

在我的.cshtml：

and in my .cshtml:

   @model Models.MemberData
   @using (Html.BeginForm("ImageReplace", "Member", FormMethod.Post,
            new { imgid = @Model.Id, enctype = "multipart/form-data" }))
        { 
     <input type="file" name="file" id="file" value="Choose Photo"  /> 
     <input type="submit" name="submit" value="Submit" />
    }

在这里imgid的值不会传递给控制器​​动作。显示错误，参数词典共包含参数非可空类型'System.Int32'的'imgid'的方法'System.Web.Mvc.ActionResult ImageReplace

here the value of imgid is not passing to controller action. show an error,The parameters dictionary contains a null entry for parameter 'imgid' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult ImageReplace

推荐答案

使用的此重载，它允许您路由值和HTML attribtues区分：

Use this overload, which allows you to distinguish between route values and HTML attribtues:

@using (Html.BeginForm(
        "ImageReplace", "Member", 
        new { imgid = @Model.Id }, 
        FormMethod.Post,
        new { enctype = "multipart/form-data" }))
{ 
    <input type="file" name="file" id="file" value="Choose Photo"  /> 
    <input type="submit" name="submit" value="Submit" />
}

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