开发学院WEB开发ASP.NET 转换DataSet到普通xml的新法 阅读

转换DataSet到普通xml的新法

 2004-12-02 16:58:02 来源:WEB开发网   
核心提示: 大家知道,用dataset传递的WebService,转换DataSet到普通xml的新法,微软会在各个节点加上schema,所以无法与j2ee,Flash兼容,所以我找到了一种转换他们变成普通xml的方法,代码如下:方法一:Public Class DataSetToXML : Inherits System.W

   大家知道,用dataset传递的WebService,微软会在各个节点加上schema,所以无法与j2ee,Flash兼容,所以我找到了一种转换他们变成普通xml的方法。代码如下:

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

这种方法是写入一个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


看来以后用dataset传递的时候也不用为它的转换发愁了。

Tags:转换 DataSet 普通

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