彻底删除的ViewState的特定页面 [英] Completely remove ViewState for specific pages

问题描述

我有一个网站，具有不需要任何回后功能的一些页面。他们只是显示的静态的HTML和甚至没有任何关联code。然而，由于母版页有一个＆LT;形式=服务器＆GT; 标签，包装均的ContentPlaceHolder 取值，由此产生的HTML总是包含在的ViewState 字段，例如：

I have a site that features some pages which do not require any post-back functionality. They simply display static HTML and don't even have any associated code. However, since the Master Page has a <form runat="server"> tag which wraps all ContentPlaceHolders, the resulting HTML always contains the ViewState field, i.e:

<input
  type="hidden"
  id="__VIEWSTATE"
  value="/wEPDwUKMjEwNDQyMTMxM2Rk0XhpfvawD3g+fsmZqmeRoPnb9kI="
/>

编辑：我试着设置的的EnableViewState 在页面级别变种都没有运气可言：

I tried both variants of setting EnableViewState on page level with no luck at all:

<%@ Page Language="C#" EnableViewState="false" %>
<%@ Page Language="C#" EnableViewState="true" %>

我意识到，那解密后的输入该值字段对应＆LT;形式＆GT; 标签我不能删除，因为它是我的母版页上。不过，我还是想删除ViewState字段为只能显示静态的HTML页面。这可能吗？

I realize, that when decrypted, this value of the input field corresponds to the <form> tag which I cannot remove because it is on my master page. However, I would still like to remove the ViewState field for pages that only display static HTML. Is it possible?

推荐答案

您可以覆盖渲染，并用正则表达式剥离出来。

You could override Render and strip it out with a Regex.

的要求采样。 （NB：这样做的开销几乎肯定会超过任何可能的益处大于虽然）

Sample as requested. (NB: Overhead of doing this would almost certainly be greater than any possible benefit though!)

protected override void Render(HtmlTextWriter output)
{
    StringWriter stringWriter = new StringWriter();

    HtmlTextWriter textWriter = new HtmlTextWriter(stringWriter);
    base.Render(textWriter);

    textWriter.Close();

    string strOutput = stringWriter.GetStringBuilder().ToString();

    strOutput = Regex.Replace(strOutput, "<input[^>]*id=\"__VIEWSTATE\"[^>]*>", "", RegexOptions.Singleline);

    output.Write(strOutput);
}

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