如何解决此错误？

无法解析远程名称：'lh5.googleusercontent.com'





描述：在此期间发生了未处理的异常执行当前的Web请求。请查看堆栈跟踪以获取有关错误及其源自代码的位置的更多信息。



异常详细信息：System.Net.WebException：无法解析远程名称：'lh5.googleusercontent.com'



来源错误：







第62行：PdfWriter.GetInstance（pdfDoc， Response.OutputStream）;

第63行：pdfDoc.Open（）;

第64行：htmlparser.Parse（sr）;

第65行：pdfDoc.Close（）;

第66行：Response.Write（pdfDoc）;





来源文件：c：\ Users \ rajesh \Documents \ Visual Studio 2010 \WebSites\PDFGeneration\Default.aspx.cs行：64



堆栈跟踪：







[WebException：远程名称无法解析：'lh5.googleusercontent .com']

System.Net.HttpWebRequest.GetResponse（）+ 890

iTextSharp.text.Image.GetInstance（Uri url）+54

iTextSharp.text.html.simp leparser.HTMLWorker.StartElement（String tag，Hashtable h）+2001

iTextSharp.text.xml.simpleparser.SimpleXMLParser.Go（TextReader reader）+1364

iTextSharp.text .xml.simpleparser.SimpleXMLParser.Parse（ISimpleXMLDocHandler doc，ISimpleXMLDocHandlerComment comment，TextReader r，Boolean html）+48

iTextSharp.text.html.simpleparser.HTMLWorker.Parse（TextReader reader）+10
\ Users \\\\\\\\\\ />
System.Web.UI.WebControls.Button.OnClick（EventArgs e）+107

System.Web.UI.WebControls.Button.RaisePostBackEvent（String eventArgument）+111

System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent（String eventArgument）+10

System.Web.UI.Page.RaisePostBackEvent（IPostBackEventHandler sourceControl，String eventArgument） +13

System.Web.UI.Page.RaisePostBackEvent（NameValueCollection postData）+36

System.Web.UI.Page.ProcessRequestMain（Boolean includeStagesBeforeAsyncPoint，Boolean includeStagesAfterAsyncPoint）+ 3436

The remote name could not be resolved: 'lh5.googleusercontent.com'


Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Net.WebException: The remote name could not be resolved: 'lh5.googleusercontent.com'

Source Error:



Line 62: PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
Line 63: pdfDoc.Open();
Line 64: htmlparser.Parse(sr);
Line 65: pdfDoc.Close();
Line 66: Response.Write(pdfDoc);


Source File: c:\Users\rajesh\Documents\Visual Studio 2010\WebSites\PDFGeneration\Default.aspx.cs Line: 64

Stack Trace:



[WebException: The remote name could not be resolved: 'lh5.googleusercontent.com']
System.Net.HttpWebRequest.GetResponse() +890
iTextSharp.text.Image.GetInstance(Uri url) +54
iTextSharp.text.html.simpleparser.HTMLWorker.StartElement(String tag, Hashtable h) +2001
iTextSharp.text.xml.simpleparser.SimpleXMLParser.Go(TextReader reader) +1364
iTextSharp.text.xml.simpleparser.SimpleXMLParser.Parse(ISimpleXMLDocHandler doc, ISimpleXMLDocHandlerComment comment, TextReader r, Boolean html) +48
iTextSharp.text.html.simpleparser.HTMLWorker.Parse(TextReader reader) +10
_Default.btnPDF_Click(Object sender, EventArgs e) in c:\Users\rajesh\Documents\Visual Studio 2010\WebSites\PDFGeneration\Default.aspx.cs:64
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +107
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +111
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3436