Question

xmldatadocument inser xml comment programmatically

Asked by: brillox

I am building an xml file from a dataset; now I need to add a comment to the generated file before the root node; please note that I am totally dummy about manipulating XML with asp.net..... below the code I am using at the moment...

Please help

thanks a lot

Private Function SaveDataSetAsXML(ByRef dsSource As System.Data.DataSet, ByVal ds As Integer) As String
 
		Dim XML_FileName As String = "Datasource_" & ds.ToString & "_Extract" & ".xml"
		Dim FullFileName As String = FileRoot & XML_FileName
		Dim xmlDoc As System.Xml.XmlDataDocument
		Dim xmlDec As System.Xml.XmlDeclaration
		Dim xsinil As XmlAttribute = Nothing
		Dim element As XmlElement = Nothing
 
 
        Try
 
 
 
 
            ' create xml data document with xml declaration
            xmlDoc = New System.Xml.XmlDataDocument(dsSource)
            xmlDoc.DataSet.EnforceConstraints = False
            xmlDec = xmlDoc.CreateXmlDeclaration("1.0", "UTF-8", Nothing)
            xmlDoc.PrependChild(xmlDec)
 
            'add namespaces to the root element 
            element = xmlDoc.DocumentElement()
            xsinil = xmlDoc.CreateAttribute("xsi", "noNamespaceSchemaLocation", "http://www.w3.org/2001/XMLSchema-instance")
            xsinil.Value = "ECDataSourceExport.xsd"
            element.SetAttributeNode(xsinil)
 
            'Dim comment As XmlComment = xmlDoc.CreateComment("This is a comment")
            'xmlDoc.InsertAfter(comment, element)
 
            'delete all previous files if any
            deleteXmlDir(FullFileName)
 
            'save fetched dataset as XML file
            xmlDoc.Save(FullFileName)
            ValidateXML(FullFileName)
 
          
 
            If Xml_Is_Valid Then
                Return "/" & XmlDirectory & "/" & XML_FileName
            Else
                Return Nothing
            End If
 
        Catch ex As Exception
            Return Nothing
        Finally
 
        End Try
	End Function

                                  
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Asked On
2009-09-16 at 15:31:14ID24738190
Tags

XML asp.net

Topics

Programming for ASP.NET

,

Extensible Markup Language (XML)

Participating Experts
1
Points
500
Comments
3

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Answers

 

by: brilloxPosted on 2009-09-16 at 17:39:00ID: 25351849

I managed to add a comment by using this code

 Dim newComment As XmlComment
 newComment = xmlDoc.CreateComment("This is a comment" & " \n" & " another line")
xmlDoc.InsertBefore(newComment, element)

the problem I have now is ... how to add a new line within the comment; I tried \n but no joy

 

by: mas_oz2003Posted on 2009-09-17 at 00:22:01ID: 25353497

Use
Environment.NewLine
instead of "\n" (This is for Unix anyway, Windows uses \r\n)

 

by: brilloxPosted on 2009-09-17 at 00:56:31ID: 31629748

Environment.NewLine works perfectly...

many thanks for your help

20120131-EE-VQP-002

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