Javascript “Sys.WebForms.PageRequestManagerServerErrorException：状态代码：500”
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"Sys.WebForms.PageRequestManagerServerErrorException: status code: 500"
提问by Basmah
I am using an asp.net text box inside ajax update panel. If I enter &# in the textbox and press Save Button , it gives a javascript error
我在 ajax 更新面板中使用了一个 asp.net 文本框。如果我在文本框中输入 并按 Save Button ，则会出现 javascript 错误
Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 500
Sys.WebForms.PageRequestManagerServerErrorException: 在服务器上处理请求时发生未知错误。服务器返回的状态码为：500
Please help me why this error appears?
请帮我为什么会出现这个错误？
采纳答案by Vinod Patil
This issue sometimes occurs when you have a control registered as an AsyncPostbackTrigger in multiple update panels.
当您在多个更新面板中将控件注册为 AsyncPostbackTrigger 时，有时会出现此问题。
If that's not the problem, try adding the following right after the script manager declaration:
如果这不是问题，请尝试在脚本管理器声明之后添加以下内容：
<script type="text/javascript" language="javascript">
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
function EndRequestHandler(sender, args){
if (args.get_error() != undefined){
args.set_errorHandled(true);
}
}
</script>
There are a few more solutions discussed here: http://forums.asp.net/t/1066976.aspx/9/10
这里讨论了更多的解决方案：http: //forums.asp.net/t/1066976.aspx/9/10
回答by Atanas Korchev
Probably ASP.NET Request Validationkicked in and detected a potentially dangerous request (the &# in the textbox value). This causes an HttpRequestValidationExceptionto be thrown - hence the 500 HTTP code is returned by the UpdatePanel. The way I see it there are two ways to solve this problem:
可能是ASP.NET 请求验证启动并检测到一个潜在的危险请求（文本框值中的 &#）。这会导致HttpRequestValidationException抛出 - 因此 500 HTTP 代码由 UpdatePanel 返回。在我看来，有两种方法可以解决这个问题：
- Validate the contents of the textbox and replace any potentially dangerous (HTML like) values.
Disable request validation:
<%@ Page ValidateRequest="false" %>
- 验证文本框的内容并替换任何有潜在危险的（类似 HTML 的）值。
禁用请求验证：
<%@ Page ValidateRequest="false" %>
If you choose to disable request validation make sure that the value of this textbox is not output verbatim somewhere else in your application. Make sure you are using HttpUtility.HtmlEncodewhen displaying it in order to avoid XSSissues.
如果您选择禁用请求验证，请确保此文本框的值不会在应用程序的其他地方逐字输出。确保在显示时使用HttpUtility.HtmlEncode以避免XSS问题。
