难道不能这样写？？

Question

1. make sure the file exist2. If ViewState("adxml") = "" then
    Dim ds as new DataSet
    ds.ReadXml(sFile)
....3. show your xml file

Answer 1

1、i am sure2、add "then" is invalidation3、xml file----------------------------
<Table>
    <ProductID>1001</ProductID>
    <CategoryID>1</CategoryID>
    <ProductName>Chocolate City Milk</ProductName>
    <ProductDescription>Chocolate City Milk Description</ProductDescription>
    <UnitPrice>2</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/milk5.gif</ImagePath>
    <ServingSize>8 fl oz (240 mL)</ServingSize>
    <Servings>8</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>Chocolate City</Manufacturer>
  </Table>
  <Table>
    <ProductID>1002</ProductID>
    <CategoryID>1</CategoryID>
    <ProductName>Bessie Brand 2% Milk</ProductName>
    <ProductDescription>Bessie Brand 2% Milk Description</ProductDescription>
    <UnitPrice>1.19</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/milk1.gif</ImagePath>
    <ServingSize>8 fl oz (240 mL)</ServingSize>
    <Servings>8</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>Milk Factory</Manufacturer>
  </Table>
  <Table>
    <ProductID>1003</ProductID>
    <CategoryID>1</CategoryID>
    <ProductName>Funny Farms  Milk</ProductName>
    <ProductDescription>Funny Farms Whole Milk Description</ProductDescription>
    <UnitPrice>1.29</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/milk4.gif</ImagePath>
    <ServingSize>8 fl oz (240 mL)</ServingSize>
    <Servings>10</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>Funny Farms</Manufacturer>
  </Table>
  <Table>
    <ProductID>2001</ProductID>
    <CategoryID>2</CategoryID>
    <ProductName>Fruity Pops</ProductName>
    <ProductDescription>Fruity Pops Description</ProductDescription>
    <UnitPrice>4.07</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/cereal7.gif</ImagePath>
    <ServingSize>3/4 cup (30 g)</ServingSize>
    <Servings>17</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>River Mills</Manufacturer>
  </Table>----------------------------

Answer 2

我用quickstart上面的读取，居然也无效！If ViewState("adxml") = "" Then
Dim ds as new DataSet
Dim FS As FileStream
Dim Reader As StreamReaderFS = New FileStream(Server.MapPath("ads.xml"),FileMode.Open,FileAccess.Read)
Reader = New StreamReader(FS)
DS.ReadXml(Reader)
FS.Close()

Answer 3

your xml is invalid, it needs a root element, for example<Tables>
<!--put your xml here--->
</Tables>

Answer 4

that's impossible!我截取了一段，完整的如下，这可是quickstart上面的——
---------------------------------------------
<NewDataSet>
<xs:schema id="NewDataSet" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
    <xs:element name="NewDataSet" msdata:IsDataSet="true">
      <xs:complexType>
        <xs:choice maxOccurs="unbounded">
          <xs:element name="Table">
            <xs:complexType>
              <xs:sequence>
                <xs:element name="ProductID" type="xs:int" minOccurs="0" />
                <xs:element name="CategoryID" type="xs:int" minOccurs="0" />
                <xs:element name="ProductName" type="xs:string" minOccurs="0" />
                <xs:element name="ProductDescription" type="xs:string" minOccurs="0" />
                <xs:element name="UnitPrice" type="xs:decimal" minOccurs="0" />
                <xs:element name="ImagePath" type="xs:string" minOccurs="0" />
                <xs:element name="ServingSize" type="xs:string" minOccurs="0" />
                <xs:element name="Servings" type="xs:int" minOccurs="0" />
                <xs:element name="Quantity" type="xs:int" minOccurs="0" />
                <xs:element name="MinOnHand" type="xs:int" minOccurs="0" />
                <xs:element name="MaxOnHand" type="xs:int" minOccurs="0" />
                <xs:element name="Manufacturer" type="xs:string" minOccurs="0" />
              </xs:sequence>
            </xs:complexType>
          </xs:element>
        </xs:choice>
      </xs:complexType>
    </xs:element>
  </xs:schema>
  <Table>
    <ProductID>1001</ProductID>
    <CategoryID>1</CategoryID>
    <ProductName>Chocolate City Milk</ProductName>
    <ProductDescription>Chocolate City Milk Description</ProductDescription>
    <UnitPrice>2</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/milk5.gif</ImagePath>
    <ServingSize>8 fl oz (240 mL)</ServingSize>
    <Servings>8</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>Chocolate City</Manufacturer>
  </Table>
  <Table>
    <ProductID>1002</ProductID>
    <CategoryID>1</CategoryID>
    <ProductName>Bessie Brand 2% Milk</ProductName>
    <ProductDescription>Bessie Brand 2% Milk Description</ProductDescription>
    <UnitPrice>1.19</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/milk1.gif</ImagePath>
    <ServingSize>8 fl oz (240 mL)</ServingSize>
    <Servings>8</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>Milk Factory</Manufacturer>
  </Table>
  <Table>
    <ProductID>1003</ProductID>
    <CategoryID>1</CategoryID>
    <ProductName>Funny Farms  Milk</ProductName>
    <ProductDescription>Funny Farms Whole Milk Description</ProductDescription>
    <UnitPrice>1.29</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/milk4.gif</ImagePath>
    <ServingSize>8 fl oz (240 mL)</ServingSize>
    <Servings>10</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>Funny Farms</Manufacturer>
  </Table>
  <Table>
    <ProductID>2001</ProductID>
    <CategoryID>2</CategoryID>
    <ProductName>Fruity Pops</ProductName>
    <ProductDescription>Fruity Pops Description</ProductDescription>
    <UnitPrice>4.07</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/cereal7.gif</ImagePath>
    <ServingSize>3/4 cup (30 g)</ServingSize>
    <Servings>17</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>River Mills</Manufacturer>
  </Table>
  <Table>
    <ProductID>2002</ProductID>
    <CategoryID>2</CategoryID>
    <ProductName>U.F.O.s Cereal</ProductName>
    <ProductDescription>U.F.O.s Cereal Description</ProductDescription>
    <UnitPrice>3.34</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/cereal3.gif</ImagePath>
    <ServingSize>1 cup (30 g)</ServingSize>
    <Servings>10</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>Acme Harvesters</Manufacturer>
  </Table>
  <Table>
    <ProductID>2003</ProductID>
    <CategoryID>2</CategoryID>
    <ProductName>Healthy Grains</ProductName>
    <ProductDescription>Healthy Grains Cereal Description</ProductDescription>
    <UnitPrice>3.78</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/cereal1.gif</ImagePath>
    <ServingSize>3/4 cup (30 g)</ServingSize>
    <Servings>17</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>All Natural Co.</Manufacturer>
  </Table>
  <Table>
    <ProductID>2004</ProductID>
    <CategoryID>2</CategoryID>
    <ProductName>Super Sugar Strike</ProductName>
    <ProductDescription>Super Sugar Strike Description</ProductDescription>
    <UnitPrice>4.17</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/cereal6.gif</ImagePath>
    <ServingSize>3/4 cup (30 g)</ServingSize>
    <Servings>17</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>Capitol Cereals</Manufacturer>
  </Table>
  <Table>
    <ProductID>3001</ProductID>
    <CategoryID>3</CategoryID>
    <ProductName>Purple Rain</ProductName>
    <ProductDescription>Brown Barrel Root Beer Description</ProductDescription>
    <UnitPrice>1.1</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/soda5.gif</ImagePath>
    <ServingSize>4 fl oz (120 mL)</ServingSize>
    <Servings>8</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>BrainFade, Inc.</Manufacturer>
  </Table>
  <Table>
    <ProductID>3002</ProductID>
    <CategoryID>3</CategoryID>
    <ProductName>Extreme Orange</ProductName>
    <ProductDescription>Bargain Cola Description</ProductDescription>
    <UnitPrice>0.89</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/soda6.gif</ImagePath>
    <ServingSize>6 fl oz (180 mL)</ServingSize>
    <Servings>6</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>SuperX Beverages</Manufacturer>
  </Table>
  <Table>
    <ProductID>3003</ProductID>
    <CategoryID>3</CategoryID>
    <ProductName>Kona Diet Cola</ProductName>
    <ProductDescription>Super Red Pop Soda Description</ProductDescription>
    <UnitPrice>1.1</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/soda7.gif</ImagePath>
    <ServingSize>4 fl oz (120 mL)</ServingSize>
    <Servings>10</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>Kona Kola Co.</Manufacturer>
  </Table>
  <Table>
    <ProductID>3004</ProductID>
    <CategoryID>3</CategoryID>
    <ProductName>Fizzy Fizzing Drink</ProductName>
    <ProductDescription>Lemon Lime Quencher Description</ProductDescription>
    <UnitPrice>1.05</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/soda8.gif</ImagePath>
    <ServingSize>6 fl oz (180 mL)</ServingSize>
    <Servings>5</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>Sparkle Co.</Manufacturer>
  </Table>
  <Table>
    <ProductID>1005</ProductID>
    <CategoryID>1</CategoryID>
    <ProductName>Marigold Whole Milk</ProductName>
    <ProductDescription>Marigold Whole Milk Description</ProductDescription>
    <UnitPrice>1.39</UnitPrice>
    <ImagePath>/quickstart/aspplus/images/milk6.gif</ImagePath>
    <ServingSize>8 fl oz (240 mL)</ServingSize>
    <Servings>8</Servings>
    <Quantity>0</Quantity>
    <MinOnHand>0</MinOnHand>
    <MaxOnHand>0</MaxOnHand>
    <Manufacturer>Marigold Meadows</Manufacturer>
  </Table>
</NewDataSet>
                  
-----------------------------------------

Answer 5

it works for me (assume the file in in "dataset.xml"):
using System;
using System.Data;class ReadXML
{
  public static void Main()
  {
DataSet ds = new DataSet();
ds.ReadXml("dataset.xml"); ds.WriteXml(Console.Out);
  }
}

Answer 6

我这没问题，你试试看？
Dim ds as new DataSet
    ds.ReadXml(Server.MapPath("ads.xml"))
    Response.Write(ds.GetXml())