asp.net生成静态后冗余代码,去掉viewstate生成的代码

复制代码 代码如下:

<input type="hidden" value="/wEPDwULLTE3NjgxMzM0MDIPZBYCZg9kFgIC……

复制代码 代码如下:

<form method="post" action="smartDropDownList.aspx">

复制代码 代码如下:

protected override void Render(HtmlTextWriter writer)
{
System.IO.StringWriter html = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter tw = new System.Web.UI.HtmlTextWriter(html);
base.Render(tw);
string Temp = html.ToString();
string s1 = string.Empty, s2 = string.Empty, s3 = string.Empty, s4 = string.Empty, s5 = string.Empty, s6 = string.Empty;
int i = 0;
int j = 0;
i = Temp.IndexOf("<form");
if (i > 0)
{
j = Temp.IndexOf(">", i);
s1 = Temp.Substring(0, i);
s2 = Temp.Substring(j + 1, Temp.Length - j - 1);
}
i = s2.IndexOf("<input type=/"hidden/" name=/"__VIEWSTATE/" id=/"__VIEWSTATE/"");
if (i > 0)
{
j = s2.IndexOf(">", i);
s3 = s2.Substring(0, i);
s4 = s2.Substring(j + 1, s2.Length - j - 1);
}
i = s4.IndexOf("<input type=/"hidden/" name=/"__EVENTVALIDATION/" id=/"__EVENTVALIDATION/"");
if (i > 0)
{
j = s4.IndexOf(">", i);
s5 = s4.Substring(0, i);
s6 = s4.Substring(j + 1, s4.Length - j - 1);
Temp = s1 + s3 + s5 + s6;
}
else
{
Temp = s1 + s3 + s4;
}
Temp = Temp.Replace("</form>", "");
Temp = Temp.Replace("/r/n", "");
tw.Close();
Response.Write(Temp);
}