Update XML File using DataSet

  • 9 years ago

    Hai all ,

    i am doing a VB.NET Windows Application .. In that i am populating the datagrid with the contents of an XML  File (using DataSet). In the datagrid if i make any changes , it should be updated to the XML File . How can i do this ? I did the coding like this .

    Dim DS as new DataSet 

    Dim
    dsl As New DataSetDim onm, oc, od As Stream

    FileNam = "OrgXML.xml"

    DS.ReadXml(FileNam, XmlReadMode.DiffGram)

    dsl = DS.GetChanges(DataRowState.Modified)

    dsl.WriteXml(FileNam, XmlWriteMode.DiffGram)

    But this code is not working .. I am getting the error that "Object Reference not set to instance of an object" How can i resolve this ? Any body plz help . its urgent.

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