XmlDocument.LoadXml() hanging for several minutes

Paigomaimmado

New Member
I have a routine that parses an XML response from an HTTP request and I use XmlDocument.LoadXml to help do this. I count on this method throwing an exception on bad XML and returning a loaded up XmlDocument object when successful.What I didn't expect is for it to hang for several minutes loading a document. When I run this code in a test environment, it hangs for several minutes 100% of the time. Looks like some bug in .NET to me...\[code\] Dim tstring As String = "" tstring &= "" & vbCrLf tstring &= "" & vbCrLf tstring &= "<!DOCTYPE html PUBLIC ""-//W3C//DTD XHTML 1.0 Transitional//EN"" ""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"">" & vbCrLf tstring &= "" & vbCrLf tstring &= "<html> xmlns=""http://www.w3.org/1999/xhtml"" >" & vbCrLf tstring &= "<head><title>" & vbCrLf tstring &= " Error" & vbCrLf tstring &= "</title></head>" & vbCrLf tstring &= "<body>" & vbCrLf tstring &= "</body>" & vbCrLf tstring &= "</html>" & vbCrLf Dim MyXmlDoc As New XmlDocument MyXmlDoc.LoadXml(tstring)\[/code\]The specific line in the document that can be removed to keep it from hanging is:\[code\] tstring &= "<!DOCTYPE html PUBLIC ""-//W3C//DTD XHTML 1.0 Transitional//EN"" ""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"">" & vbCrLf\[/code\]Am I going to have to search for "<!DOCTYPE html" in the string and not call LoadXml() if I see it? My concern about this is what other gotchas are waiting for me inside this method?
 
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