ASP.NET MVC验证的问题 - 数据未公布 [英] ASP.NET MVC validation problem - data is not posted

问题描述

我有以下类：

public class NewCommentClass
{
    public string ActionName { get; set; }
    public object RouteValues { get; set; }
    [Required(ErrorMessage = "Comment Required")]
    public string Comment { get; set; }
    public int? CommentParentID { get; set; }
}

以下code鉴于：

following code in view:

        NewCommentClass newCommentClass = new NewCommentClass() { ActionName = "PostComment", RouteValues = new { id = ideaItem.Ideas.IdeaID } };
        Html.RenderPartial("~/Views/Shared/NewComment.ascx", newCommentClass);

和NewComment.ascx：

and NewComment.ascx:

    <% @ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<NEOGOV_Ideas.Models.NewCommentClass>" %>
....
    <div class="comment-new-container">
        <div class="grid_1 alpha item-sidebar">
            <p style="padding-top: 0.5em">
                <a href="#">
                    <img src="<% = userAvatar %>" class="profile-photo" alt="Your Profile Picture" width="48"
                        height="48" /></a>
            </p>
        </div>
        <div class="grid_8 omega">
            <div class="comment-body">
                <% using (Html.BeginForm(Model.ActionName, "Home", Model.RouteValues, FormMethod.Post, new { id = "FormAddComment", name = "FormAddComment" }))
                   { %>
                <fieldset>
                    <% = Html.TextAreaFor(model => model.Comment, htmlAttributes)%>
                    <% = Html.ValidationMessageFor(model=>model.Comment) %>
                    <input type="submit" value="<% = postButtonTitle %>" class="small blue awesome noborder" />
                </fieldset>
                <%} %>
            </div>
        </div>
        <div class="clear">
        </div>
    </div>

和在控制器下面的帖子方法：

and following post method in controller:

     public ActionResult PostComment(int id, string Comment, int? CommentParentID, string referrerUrl)
        {
...
}

但这个验证工作不正常。
如果我输入的数据textarea的，然后点击提交 - 一切ok
但如果我只是点击提交无内部的数据 - 得到错误信息（这是正确的），但是当我这个动作后，输入数据，文本区域 - 错误信息已被隐藏，但形式不是submited！如果我添加Html.ValidationSummary（真） - 我一个标签是隐藏的，但第二个所示。
为什么这么奇怪的行为？

but this validation does not work correctly. If I enter data to textarea and click on "Submit" - all ok But If I just click on "Submit" without data inside - got error message (it's correct), but when I enter data to textarea after this action - error message is hidden, but form is not submited!. If I add Html.ValidationSummary(true) - I one label is hidden, but second is shown. Why so strange behaviour?

推荐答案

在你的Html.BeginForm（）命令，创建一个HtmlAttribute对象，你用它的名字和你的textarea的ID设置为 FormAddComment 。因为这是在表单的唯一领域，你需要改变你的方法的签名如下：

In your Html.BeginForm() command, you create an HtmlAttribute object, and you use it to set the name and id of your textarea to FormAddComment. Because this is the only field in the form, you would need to change your method signature as follows:

[HttpPost]
public ActionResult PostComment(string FormAddComment)

您当前的签名没有收到从发布的形式什么。如果您使用Fiddler或类似的工具来检查什么被贴出来，你会看到 FormAddComment = [无论是输入到文本区域] 作为POST的身体发出你的浏览器。

Your current signature doesn't receive anything from the posted form. If you use Fiddler or a similar tool to inspect what is being posted, you will see FormAddComment=[whatever was typed into the textarea] as the body of the POST sent from your browser.

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