kwilliams Posted February 7, 2006 Share Posted February 7, 2006 I'm trying to pass an XSLT parameter into an ASP.NET page, and back again, but it's not getting passed for some reason. If someone could let me know what I'm doing wrong, and possible help me out with a solution, it would be greatly appreciated. Thanks.XML DOC: <?xml version="1.0" encoding="ISO-8859-1"?><feedback> <feedback id="1"> <fname>FIRSTNAME</fname> <lname>LASTNAME</lname> </feedback></feedback> XSLT DOC: <?xml version="1.0" encoding="ISO-8859-1"?><xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"><xsl:output method="xml" encoding="UTF-8" indent="yes"/><!-- PAGE-SPECIFIC PARAMETERS --><xsl:param name="fname_val" select="''" /><xsl:param name="lname_val" select="''" /><!-- FORM VALIDATION VARIABLES --><xsl:variable name="fname_msg">Must enter between 1 and 30 characters</xsl:variable><xsl:variable name="lname_msg">Must enter between 1 and 30 characters</xsl:variable> <xsl:template match="/"> <form method="post" action="feedback.aspx"> <table class="navyblueborder" width="100%"> <xsl:for-each select="feedback/feedback"> <tr> <td class="whiteheader" bgcolor="#333366" colspan="2">Feedback Form</td> </tr> <tr> <td bgcolor="#ccccff"><strong>First Name:</strong></td> <td bgcolor="#ccccff"><input type="text" id="txtfname" name="txtfname" value="fname_test" size="30" maxlength="30" tabindex="1" /> <font color="red">* <xsl:if test="$fname_val != ''"> <xsl:value-of select="$fname_msg" /> </xsl:if> </font> </td> </tr> <tr> <td bgcolor="#ccccff"><strong>Last Name:</strong></td> <td bgcolor="#ccccff"><input type="text" id="txtlname" name="txtlname" value="lname_test" size="30" maxlength="30" tabindex="2" /> <font color="red">*</font></td> </tr> </xsl:for-each> </table> </form> </xsl:template></xsl:stylesheet> ASP.NET DOC (feedback.aspx): <%@ Page Language="VB" ContentType="text/html" ResponseEncoding="iso-8859-1" Debug="true" %><% 'Declare XML and XSL file paths Dim xmlURL As String, xslURL As String xmlURL = "feedback.xml" xslURL = "feedback.xsl" 'Load XML Dim xml = Server.CreateObject("MSXML2.DOMDocument.3.0") xml.async = false xml.load(xmlURL) 'Load XSL Dim xsl = Server.CreateObject("MSXML2.DOMDocument.3.0") xsl.async = false xsl.load(xslURL) 'Pull in form data Dim fname_form As String = trim(Request.Form("txtfname")) 'REQUIRED Dim lname_form As String = trim(Request.Form("txtlname")) 'REQUIRED 'Test pulled in form data Response.Write("Form FName: " + fname_form + "<br />") 'TEST Response.Write("Form LName: " + lname_form + "<br />") 'TEST 'Pull in XSL parameters Dim fname_param = xsl.selectSingleNode("//xsl:param[@name='fname_val']") fname_param.SetAttribute("select", "'" & fname_form & "'") Response.Write("XML FName: " + fname_param + "<br />") 'TEST Dim lname_param As String = xsl.selectSingleNode("//xsl:param[@name='lname_val']") fname_param.SetAttribute("select", "'" & lname_form & "'") Response.Write("XML LName: " + lname_qs + "<br />") 'TEST%> RESULTING ERROR:Exception Details: System.NullReferenceException: Object variable or With block variable not set.Source Error:Line 49: Dim fname_param = xsl.selectSingleNode("//xsl:param[@name=fname_val]")Line 50: fname_param.SetAttribute("select", "'" & fname_form & "'") '<!---***ERROR IS ON THIS LINE***Line 51: Response.Write("XML FName: " + fname_param + "<br />") 'TESTLine 52: Link to comment Share on other sites More sharing options...
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