asp.net页面的隐藏__viewstate上的500内部服务器错误
[英]500 internal server error on hidden __viewstate of asp.net page
问题描述
I am trying to post the data to cross domain. 
我正在尝试将数据发布到跨域。 It works fine if the form is not using runat="server" and its giving 500 internal error while posting when the form is using runat="server". 如果表单未使用runat =“ server”，并且在表单使用runat =“ server”进行发布时出现500内部错误，则此方法工作正常。
Upon debugging, I identified that the problem is with auto generated __viewstate code on the page. 调试后，我发现问题出在页面上自动生成的__viewstate代码。 Please find the below code. 请找到下面的代码。
Clientside HTML implementation: 客户端HTML实现：
<%@ Page Language="C#" CodeFile="Sample.aspx.cs" Inherits="Sample" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<meta charset="utf-8">
<title>Untitled Page</title>
<link href="FileUpload.css" rel="stylesheet" type="text/css" />
<script id="template-upload" type="text/x-tmpl">
</script>
<script id="template-download" type="text/x-tmpl">
</script>
<script src="../../test/FileUpload/jQueryv1.6.2.js"></script>
<script src="fileupload-js/jquery.ui.widget.js"></script>
<script src="fileupload-js/tmpl.min.js"></script>
<script src="fileupload-js/jquery.fileupload.js"></script>
<script src="fileupload-js/jquery.fileupload-ui.js"></script>
<script src="fileupload-js/locale.js"></script>
<script src="fileupload-js/main.js"></script>
</head>
<body>
<form id="fileupload" method="POST" runat="server">
<CCAB.Web:FileUpload runat="server"/>
</form>
</body>
</html>
Serverside code: 服务器端代码：
public partial class SaveFile : System.Web.UI.Page
{
private void Page_Load(object sender, System.EventArgs e)
{
Response.AddHeader("Access-Control-Allow-Origin", "*")
if (Request.HttpMethod == "GET" || Request.HttpMethod == "HEAD")
{
Response.Write("GET Success");
}
else
{
for (int i = 0; i < Request.Files.Count; i++)
{
string filename = Request.Files[i].FileName;
Request.Files[i].SaveAs(@"\\dev2\\share$\\Anna\\test\\" + filename);
Response.Write(filename);
Response.Write("Success");
}
}
}
}
Could you please help me in how to ignore the hidden viewstate code from client side or ignore the response viewstate in server side. 您能帮助我如何从客户端忽略隐藏的viewstate代码或如何在服务器端忽略响应viewstate。
Many Thanks Anna 非常感谢安娜
2 个解决方案
解决方案1
1 2012-07-08 07:09:20
Try disabling view state by adding a line of code to your unload handler: 尝试通过向卸载处理程序添加一行代码来禁用视图状态：
Page.EnableViewState = false;
see this MSDN page 看到这个MSDN页面
解决方案2
0 已采纳 2012-07-08 08:03:55
I have found the solution for this problem. 我已经找到解决此问题的方法。 Please find below 如下请见
public class BasePage : Page
{
private static string[] aspNetFormElements = new string[]
{
"__EVENTTARGET",
"__EVENTARGUMENT",
"__VIEWSTATE",
"__EVENTVALIDATION",
"__VIEWSTATEENCRYPTED",
};
protected override void Render(HtmlTextWriter writer)
{
StringWriter stringWriter = new StringWriter();
HtmlTextWriter htmlWriter = new HtmlTextWriter(stringWriter);
base.Render(htmlWriter);
string html = stringWriter.ToString();
int formStart = html.IndexOf("<form");
int endForm = -1;
if (formStart >= 0)
endForm = html.IndexOf(">", formStart);
if (endForm >= 0)
{
StringBuilder viewStateBuilder = new StringBuilder();
foreach (string element in aspNetFormElements)
{
int startPoint = html.IndexOf("<input type=\"hidden\" name=\"" + element + "\"");
if (startPoint >= 0 && startPoint > endForm)
{
int endPoint = html.IndexOf("/>", startPoint);
if (endPoint >= 0)
{
endPoint += 2;
string viewStateInput = html.Substring(startPoint, endPoint - startPoint);
html = html.Remove(startPoint, endPoint - startPoint);
viewStateBuilder.Append(viewStateInput).Append("\r\n");
}
}
}
if (viewStateBuilder.Length > 0)
{
viewStateBuilder.Insert(0, "\r\n");
html = html.Insert(endForm + 1, viewStateBuilder.ToString());
}
}
writer.Write(html);
}
}
Please find more info on this page : http://blogs.msdn.com/b/tom/archive/2008/03/14/validation-of-viewstate-mac-failed-error.aspx 请在此页面上找到更多信息： http : //blogs.msdn.com/b/tom/archive/2008/03/14/validation-of-viewstate-mac-failed-error.aspx
Many Thanks Anna 非常感谢安娜
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