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轉換DataSet到普通xml的新法 -
編輯:XML詳解     
sp;   大家知道,用dataset傳遞的WebService,微軟會在各個節點加上schema,所以無法與J2EE,Flash兼容,所以我找到了一種轉換他們變成普通XML的方法。代碼如下:

方法一:
Public Class DataSetToXML : Inherits System.Web.UI.Page

  Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    Dim objConn As SqlConnection
    Dim strSql As String

    strSql = "SELECT TOP 10 * FROM Customers"
    objConn = New SqlConnection(ConfigurationSettings.APPSettings("ConnectionString"))

    Dim sdaCust As New SqlDataAdapter(strSql, objConn)
    Dim dstCust As New DataSet()

    sdaCust.Fill(dstCust, "Customers")
    @#Save data to XML file and schema file
    dstCust.WriteXML(Server.MapPath("Customers.xml"),XMLWriteMode.IgnoreSchema)
    dstCust.WriteXMLSchema(Server.MapPath("Customers.xsd"))
  End Sub

這種方法是寫入一個XML文件


方法二:
   <WebMethod(Description:="所有教室列表")> _
    Public Function ListAllRooms() As XMLDocument

        Try
            m_CpCourseArrange.FillRoomId(m_DsCourseArrange)
            @#Dim reader As New MemoryStream


            Dim doc As New XMLDocument
            doc.LoadXml(m_DsCourseArrange.GetXML.ToString) 
            Return doc

        Catch ex As Protocols.SoapException
            Throw SoapExceptionE.RaiseException("ListAllRooms", "http://tempuri.org/CourseArrange", ex.Message, "4000", ex.Source, SoapExceptionE.FaultCode.Server)
        End Try
    End Function


GetXML--Returns the XML representation of the data stored in the DataSet.   (MSDN)


Private Shared Sub DemonstrateGetXML()
    @# Create a DataSet with one table containing two columns and 10 rows.
    Dim ds As DataSet = New DataSet("myDataSet")
    Dim t As DataTable = ds.Tables.Add("Items")
    t.Columns.Add("id", Type.GetType("System.Int32"))
    t.Columns.Add("Item", Type.GetType("System.String"))

    @# Add ten rows.
    Dim r As DataRow
    Dim i As Integer
    For i = 0 To 9
        r = t.NewRow()
        r("id") = i
        r("Item")= "Item" & i
        t.Rows.Add(r)
    Next

    @# Display the DataSet contents as XML.
    Console.WriteLine( ds.GetXML() )
End Sub


看來以後用dataset傳遞的時候也不用為它的轉換發愁了。

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