xPath error

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    • March 21, 2006 at 12:57 AM #13202
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        If you open the schema inside BizTalk and click on the Body node, it will give you the full xpath expression inside the Node Xpath property (something named like that). That’s what I usually use.

        Also, I sometimes build a simple .net app to test my xpath queries. That saves a lot of time as well.

      • March 21, 2006 at 2:47 AM #13203
        community-content

          Also the context-position is 1- based
          So you should have something like this:

          [code:1:51ddb39d9a]/*[local-name()=’Sample’ and namespace-uri()=’http://BizTalkOrch.InPutSchema’]/*[local-name()=’Body’ and position()=1 and namespace-uri()=”][/code:1:51ddb39d9a]

          • March 23, 2006 at 7:41 PM #13204
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              The error is from StringBuilder not from the xpath function.
              I would suggest removing the System.String.Format and just assigning the string to XPathStatement.

              Also the position() function is case sensitive.

              • March 19, 2006 at 6:23 AM #13205
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                  I have the following xml:

                  [color=blue:67475ee949]<ns0:Sample xmlns:ns0=\”http://BizTalkOrch.InPutSchema\”>
                  <Body>
                  <AnyThing>AnyThing_0</AnyThing>
                  </Body>
                  </ns0:Sample>[/color:67475ee949]

                  This message is assigned to message variable InMsg.
                  I have a variable called xmlDoc of type System.xml.xmldocument
                  I have another message of type System.xml.xmldocument called OutMsg

                  I am using xPath to extract some of InMsg message details:
                  my xpath expression is:

                  [color=darkred:67475ee949]xDoc = new System.Xml.XmlDocument();
                  xDoc= xpath(InMsg, \”//*[local-name()=’Body’][0]\”);
                  OutMsg=xDoc;[/color:67475ee949]

                  When I execute this and check it the Debug mode tracked events:

                  I get the following error:

                  [color=red:67475ee949]Microsoft.XLANGs.Core.NullPartException: The part ‘part’ of message ‘OutMsg’ contained a null value at the end of the construct block[/color:67475ee949].
                  at Microsoft.XLANGs.Core.Part.ConstructionCompleteEvent()
                  at Microsoft.XLANGs.Core.XMessage.ConstructionCompleteEvent()
                  at BizTalkOrch1.XPath.segment1(StopConditions stopOn)
                  at Microsoft.XLANGs.Core.SegmentScheduler.RunASegment(Segment s, StopConditions stopCond, Exception& exp)
                  Microsoft.XLANGs.Core.NullPartException
                  Scoped@
                  XPath.XPath
                  9363d962-4b5b-4fda-b012-74d2e73cf154

                  I feel something is wrong in my xPath statment. Please help If you can suggest some thing better.

                  • March 23, 2006 at 1:11 PM #13206
                    community-content

                      Thanks for your advice:
                      Now I have changed it to

                      [color=blue:f19eb68538]XPathStatement = System.String.Format(\”/*[local-name()=’Sample’ and namespace-uri()=’http://BizTalkOrch.InPutSchema’%5D/*%5Blocal-name()=’Body&#8217; and Position()=1 and namespace-uri()=”]\”);
                      xDoc = xpath(InMsg, XPathStatement);[/color:f19eb68538]

                      But Now I am getting the following error:

                      [color=red:f19eb68538]System.FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
                      at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String format, Object[] args)
                      at System.String.Format(IFormatProvider provider, String format, Object[] args)
                      at BizTalkOrch1.XPath.segment1(StopConditions stopOn)
                      at Microsoft.XLANGs.Core.SegmentScheduler.RunASegment(Segment s, StopConditions stopCond, Exception& exp)
                      System.FormatException
                      Scoped@
                      XPath.XPath
                      ea9527c1-8a78-47d6-ad83-3f8e058936a7[/color:f19eb68538]

                      Please note that I have tried with both position 0 as well as 1 but the error remain the same.

                      regards,

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