彻底解决“在多字节的目标代码页中，没有此Unicode字符可以映射到的字符” - 苏飞论坛

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[ArgumentOutOfRangeException: 在多字节的目标代码页中，没有此 Unicode 字符可以映射到的字符。 (异常来自 HRESULT:0x80070459)]

   System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo) +0

   System.Runtime.InteropServices.Marshal.ThrowExceptionForHR(Int32 errorCode) +13563503

   System.Web.Hosting.IIS7WorkerRequest.GetServerVariableInternal(String name) +50

   System.Web.Hosting.IIS7WorkerRequest.ReadRequestHeaders() +144

   System.Web.Hosting.IIS7WorkerRequest.GetKnownRequestHeader(Int32 index) +109

   System.Web.HttpWorkerRequest.HasEntityBody() +27

   System.Web.HttpRequest.GetEncodingFromHeaders() +126

   System.Web.HttpRequest.get_ContentEncoding() +162

   System.Web.HttpRequest.get_QueryStringEncoding() +10

   System.Web.HttpRequest.get_QueryStringText() +209

   System.Web.HttpRequest.ValidateInputIfRequiredByConfig() +87

   System.Web.PipelineStepManager.ValidateHelper(HttpContext context) +55

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No mapping for the Unicode character exists in the target multi-byte code page.

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<rule name="block_invalid_tag_url" stopProcessing="true">

    <match url="^[^/]+/tag/.*?\?.*$" />

    <action type="CustomResponse" statusCode="404" statusReason="The request URL is invalid" 

        statusDescription="The request URL is invalid" />

</rule>

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HttpCookie cookie = new HttpCookie("uname", HttpUtility.UrlEncode(uname));

                    cookie.Expires = DateTime.Now.AddMonths(4);

                    Response.AppendCookie(cookie);