关于ASP.NET2.0下禁用ViewState

tuoshi 2009-07-09 02:24:06

在web.config里设置了<pages enableSessionState="true" enableViewState="false" enableViewStateMac="false"/>

但页面里__VIEWSTATE和__EVENTVALIDATION两个隐含值还是有。

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Jock.Chen 2009-07-09

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参考资料

Asp.net--ViewState机制由浅入深1
http://www.cnblogs.com/star65225692/archive/2008/04/05/1138331.html

将ViewState持久化保持在服务器端
http://topic.csdn.net/u/20080530/22/ef0d36a4-6bd4-4eba-9743-b56f080b2161.html

去掉.net页面中的<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE"[
http://topic.csdn.net/u/20080918/15/9af44a56-f77e-49c6-bc39-0ad44ad17c5c.html

Jock.Chen 2009-07-09

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用Reflector看下Page类的方法Page.BeginFormRender,Page.RenderViewStateFields将ClientState属性中的值写入到HTML页面的_VIEWSTATE中。即使ClientState为Null也会将_VIEWSTATE写出来.



internal void RenderViewStateFields(HtmlTextWriter writer)

{

    if (this.ClientState != null)

    {

        ICollection is2 = this.DecomposeViewStateIntoChunks();

        writer.WriteLine();

        if (is2.Count > 1)

        {

            writer.Write("<input type=\"hidden\" name=\"");

            writer.Write("__VIEWSTATEFIELDCOUNT");

            writer.Write("\" id=\"");

            writer.Write("__VIEWSTATEFIELDCOUNT");

            writer.Write("\" value=\"");

            writer.Write(is2.Count.ToString(CultureInfo.InvariantCulture));

            writer.WriteLine("\" />");

        }

        int num = 0;

        foreach (string str in is2)

        {

            writer.Write("<input type=\"hidden\" name=\"");

            writer.Write("__VIEWSTATE");

            string str2 = null;

            if (num > 0)

            {

                str2 = num.ToString(CultureInfo.InvariantCulture);

                writer.Write(str2);

            }

            writer.Write("\" id=\"");

            writer.Write("__VIEWSTATE");

            if (num > 0)

            {

                writer.Write(str2);

            }

            writer.Write("\" value=\"");

            writer.Write(str);

            writer.WriteLine("\" />");

            num++;

        }

    }

    else

    {

        writer.Write("\r\n<input type=\"hidden\" name=\"");

        writer.Write("__VIEWSTATE");

        writer.WriteLine("\" id=\"");

        writer.Write("__VIEWSTATE");

        writer.WriteLine("\" value=\"\" />");

    }

}