xml xsl and dataset

DataSets can be populated from the contents of a valid XML file using ReadXml method

for example :

Dim myDataSet as New DataSet()
   
myDataSet.ReadXml(Server.MapPath("main.xml"))

' Visual Basic
Dim filePath As String
filePath = "Complete path where you saved the XML file"
dsAuthors.ReadXml(filePath)
With DataGrid1
   .DataSource = dsAuthors
   .DataMember = "authors"
   .CaptionText = .DataMember
End With

Private Sub WriteXmlToFile(thisDataSet As DataSet)
    If thisDataSet Is Nothing Then
        Return
    End If
    ' Create a file name to write to.
    Dim filename As String = "myXmlDoc.xml"
    ' Create the FileStream to write with.
    Dim myFileStream As New System.IO.FileStream _
       (filename, System.IO.FileMode.Create)
    ' Create an XmlTextWriter with the fileStream.
    Dim myXmlWriter As New System.Xml.XmlTextWriter _
       (myFileStream, System.Text.Encoding.Unicode)
    ' Write to the file with the WriteXml method.
    thisDataSet.WriteXml(myXmlWriter)
    myXmlWriter.Close()
End Sub

Regards,

Aeros

DataSet ds = new DataSet();
ds.ReadXml(Server.MapPath("countries.xml"));
 
XmlDataDocument xmlDoc = new XmlDataDocument(ds);
     
XmlNodeList nodeList = xmlDoc.DocumentElement.SelectNodes("/Countries/Country[on=true]");

And you can use ReadXMLSchema to Apply the Schema to the dataSet

Dim myDataSet as New DataSet()
   
myDataSet.ReadXmlSchema(Server.MapPath("main.xml"))

If you want to see what is the defalut Scema,

myDataSet.ReadXml(Server.MapPath("main.xml"))

After that myDataSet.WriteXMLSchema("main.xsd")

you can see what is the XSD the dataset has.

hi
here is another xml document and i am getting the error.

<main>
              <SummaryInformation >
                        <PickupDate>10/29/2001></PickupDate>
                        <PickUpRecord val=6481802191></PickUpRecord>      
                        <NoOfPackages >44</NoOfPackages>
                        <PublishedCharge>955.75</PublishedCharge>
                        <IncentiveCredit>-231.08</IncentiveCredit>
                        <BilledCharges>724.67</BilledCharges>
                  </SummaryInformation>
                  <SummaryInformation >
                        <PickupDate >10/29/2001></PickupDate>
                        <PickUpRecord val=6481802191></PickUpRecord>      
                        <NoOfPackages >44</NoOfPackages>
                        <PublishedCharge>955.75</PublishedCharge>
                        <IncentiveCredit>-231.08</IncentiveCredit>
                        <BilledCharges>724.67</BilledCharges>
                  </SummaryInformation>
                  <SummaryInformation >
                        <PickupDate>10/29/2001</PickupDate>
                        <PickUpRecord val=6481802191></PickUpRecord>      
                        <NoOfPackages >44</NoOfPackages>
                        <PublishedCharge>955.75</PublishedCharge>
                        <IncentiveCredit>-231.08</IncentiveCredit>
                        <BilledCharges>724.67</BilledCharges>
                  </SummaryInformation>
                  <SummaryInformation >
                        <PickupDate>10/29/2001</PickupDate>
                        <PickUpRecord val=6481802191></PickUpRecord>      
                        <NoOfPackages >44</NoOfPackages>
                        <PublishedCharge>955.75</PublishedCharge>
                        <IncentiveCredit>-231.08</IncentiveCredit>
                        <BilledCharges>724.67</BilledCharges>
                  </SummaryInformation>
</main>

what is 'the error'?

Error is solved.
Here is schema,xml and code.The problem is  for PickUprecord it is creating anothet table with name PICKUPRECORD and have the element pickupid.for this xml it is creating two tables.
i want to populate all data in on table if it has child elemets like details we can go for another table but attribute value should populate in the same table.
Can anyone tell me what i need to chane in SCHEMA FILE.I can't change the xml structure.
Here is the scheme :

<xs:schema id="main" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
      <xs:element name="main" msdata:IsDataSet="true">
            <xs:complexType>
                  <xs:choice maxOccurs="unbounded">
                        <xs:element name="SummaryInformation">
                              <xs:complexType>
                                    <xs:sequence>
                                          <xs:element name="PickupDate" type="xs:date" minOccurs="0" />
                                          <xs:element name="NoOfPackages" type="xs:integer" minOccurs="0" />
                                          <xs:element name="PublishedCharge" type="xs:decimal" minOccurs="0" />
                                          <xs:element name="IncentiveCredit" type="xs:decimal" minOccurs="0" />
                                          <xs:element name="BilledCharges" type="xs:decimal" minOccurs="0" />
                                          <xs:element name="PickUpRecord" minOccurs="0" maxOccurs="unbounded">
                                          <xs:complexType>
                                                <xs:sequence>
                                                      <xs:element name="Details" type="xs:integer" minOccurs="0" msdata:Ordinal="0" />
                                                </xs:sequence>
                                                <xs:attribute name="Pickupid" type="xs:string" />
                                                </xs:complexType>
                                          </xs:element>
                                    </xs:sequence>
                              </xs:complexType>
                        </xs:element>
                  </xs:choice>
            </xs:complexType>
      </xs:element>
</xs:schema>
Here is xml :

<main>
              <SummaryInformation >
                        <PickupDate>10/29/1845</PickupDate>
                        <PickUpRecord Pickupid="6481802191">
                        <Details>
                        </Details>
                        </PickUpRecord>      
                        <NoOfPackages >44</NoOfPackages>
                        <PublishedCharge>955.75</PublishedCharge>
                        <IncentiveCredit>-231.08</IncentiveCredit>
                        <BilledCharges>724.67</BilledCharges>
                  </SummaryInformation>
                   <SummaryInformation >
                        <PickupDate>10/29/1977</PickupDate>
                        <PickUpRecord Pickupid="6481802191">
                        <Details>
                        </Details>
                        </PickUpRecord>      
                        <NoOfPackages >44</NoOfPackages>
                        <PublishedCharge>955.75</PublishedCharge>
                        <IncentiveCredit>-231.08</IncentiveCredit>
                        <BilledCharges>724.67</BilledCharges>
                  </SummaryInformation>
                   <SummaryInformation >
                        <PickupDate>10/29/2055</PickupDate>
                        <PickUpRecord Pickupid="6481802191">
                        <Details>
                        </Details>
                        </PickUpRecord>      
                        <NoOfPackages >44</NoOfPackages>
                        <PublishedCharge>955.75</PublishedCharge>
                        <IncentiveCredit>-231.08</IncentiveCredit>
                        <BilledCharges>724.67</BilledCharges>
                  </SummaryInformation>
                   <SummaryInformation >
                        <PickupDate>10/29/2033</PickupDate>
                        <PickUpRecord Pickupid="6481802191">
                        <Details>
                        </Details>
                        </PickUpRecord>      
                        <NoOfPackages >44</NoOfPackages>
                        <PublishedCharge>955.75</PublishedCharge>
                        <IncentiveCredit>-231.08</IncentiveCredit>
                        <BilledCharges>724.67</BilledCharges>
                  </SummaryInformation>
                   <SummaryInformation >
                        <PickupDate>10/29/2002</PickupDate>
                        <PickUpRecord Pickupid="6481802191">
                        <Details>
                        </Details>
                        </PickUpRecord>      
                        <NoOfPackages >44</NoOfPackages>
                        <PublishedCharge>955.75</PublishedCharge>
                        <IncentiveCredit>-231.08</IncentiveCredit>
                        <BilledCharges>724.67</BilledCharges>
                  </SummaryInformation>
                   <SummaryInformation >
                        <PickupDate>10/29/2003</PickupDate>
                        <PickUpRecord Pickupid="6481802191">
                        <Details>
                        </Details>
                        </PickUpRecord>      
                        <NoOfPackages >44</NoOfPackages>
                        <PublishedCharge>955.75</PublishedCharge>
                        <IncentiveCredit>-231.08</IncentiveCredit>
                        <BilledCharges>724.67</BilledCharges>
                  </SummaryInformation>
</main>


Here is Code

DataSet xx=new DataSet();
                        xx.ReadXml(Server.MapPath("XMLFile2.xml"));
                        xx.ReadXmlSchema(Server.MapPath("XSDSchema1.xsd"));
                        int count1=xx.Tables[0].Rows.Count;
                        string tablename=xx.Tables[0].TableName;

                        foreach( DataColumn dc in xx.Tables[0].Columns )
                        {
                              Response.Write(dc.ColumnName+" , "+dc.DataType +" ,"+dc.Unique +" ,"+dc.AutoIncrement+" ,"+dc.AllowDBNull );
                              Response.Write("<br>");

                        }

So you resolved the issue my friend?

Aeros

Look into annotation:

Annotations enable you to modify the names of the elements in your typed DataSet without modifying the underlying schema. Modifying the names of the elements in your underlying schema would cause the typed DataSet to refer to objects that do not exist in the data source, as well as losing a reference to the objects that do exist in the data source.

Using annotations, you can customize the names of objects in your typed DataSet with more meaningful names, making code more readable and your typed DataSet easier for clients to use, while leaving underlying schema intact. For example, the following schema element for the Customers table of the Northwind database would result in a DataRow object name of CustomersRow and a DataRowCollection named Customers.

<xs:element name="Customers">
  <xs:complexType>
    <xs:sequence>
      <xs:element name="CustomerID" type="xs:string" minOccurs="0" />
    </xs:sequence>
  </xs:complexType>
</xs:element>
A DataRowCollection name of Customers is meaningful in client code, but a DataRow name of CustomersRow is misleading because it is a single object. Also, in common scenarios, the object would be referred to without the Row identifier and instead would be simply referred to as a Customer object. The solution is to annotate the schema and identify new names for the DataRow and DataRowCollection objects. Following is the annotated version of the previous schema.

<xs:element name="Customers" codegen:typedName="Customer" codegen:typedPlural="Customers">
  <xs:complexType>
    <xs:sequence>
      <xs:element name="CustomerID" type="xs:string" minOccurs="0" />
    </xs:sequence>
  </xs:complexType>
</xs:element>
Specifying a typedName value of Customer will result in a DataRow object name of Customer. Specifying a typedPlural value of Customers preserves the DataRowCollection name of Customers.

The following table shows the annotations available for use.

Annotation Description
typedName Name of the object.
typedPlural Name of a collection of objects.
typedParent Name of the object when referred to in a parent relationship.
typedChildren Name of the method to return objects from a child relationship.
nullValue Value if the underlying value is DBNull. See the following table for nullValue annotations. The default is _throw.

The following table shows the values that can be specified for the nullValue annotation.

nullValue Description
Replacement Value Specifies a value to be returned. The returned value must match the type of the element. For example, use nullValue="0" to return 0 for null integer fields.
_throw Throw an exception. This is the default.
_null Return a null reference or throw an exception if a primitive type is encountered.
_empty For strings, return String.Empty, otherwise return an object created from an empty constructor. If a primitive type is encountered, throw an exception.

The following table shows default values for objects in a typed DataSet and the available annotations.

Object/Method/Event Default Annotation
DataTable TableNameDataTable typedPlural
DataTable Methods NewTableNameRow
AddTableNameRow

DeleteTableNameRow
 typedName
DataRowCollection TableName typedPlural
DataRow TableNameRow typedName
DataColumn DataTable.ColumnNameColumn
DataRow.ColumnName
 typedName
Property PropertyName typedName
Child Accessor GetChildTableNameRows typedChildren
Parent Accessor TableNameRow typedParent
DataSet Events TableNameRowChangeEvent
TableNameRowChangeEventHandler
 typedName

To use typed DataSet annotations, you must include the following xmlns reference in your XML Schema definition language (XSD) schema.

xmlns:codegen="urn:schemas-microsoft-com:xml-msprop"
The following is a sample, annotated schema that exposes the Customers table of the Northwind database with a relation to the Orders table included.

<?xml version="1.0" encoding="utf-8"?>
<xs:schema id="CustomerDataSet"
      xmlns:codegen="urn:schemas-microsoft-com:xml-msprop"
      xmlns=""
      xmlns:xs="http://www.w3.org/2001/XMLSchema"
      xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
  <xs:element name="CustomerDataSet" msdata:IsDataSet="true">
    <xs:complexType>
      <xs:choice maxOccurs="unbounded">
        <xs:element name="Customers" codegen:typedName="Customer" codegen:typedPlural="Customers">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="CustomerID" codegen:typedName="CustomerID" type="xs:string" minOccurs="0" />
              <xs:element name="CompanyName" codegen:typedName="CompanyName" type="xs:string" minOccurs="0" />
              <xs:element name="Phone" codegen:typedName="Phone" codegen:nullValue="" type="xs:string" minOccurs="0" />
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <xs:element name="Orders" codegen:typedName="Order" codegen:typedPlural="Orders">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="OrderID" codegen:typedName="OrderID" type="xs:int" minOccurs="0" />
              <xs:element name="CustomerID" codegen:typedName="CustomerID" codegen:nullValue="" type="xs:string" minOccurs="0" />
              <xs:element name="EmployeeID" codegen:typedName="EmployeeID" codegen:nullValue="0" type="xs:int" minOccurs="0" />
              <xs:element name="OrderDate" codegen:typedName="OrderDate" codegen:nullValue="1980-01-01T00:00:00" type="xs:dateTime" minOccurs="0" />
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:choice>
    </xs:complexType>
    <xs:unique name="Constraint1">
      <xs:selector xpath=".//Customers" />
      <xs:field xpath="CustomerID" />
    </xs:unique>
    <xs:keyref name="CustOrders" refer="Constraint1" codegen:typedParent="Customer" codegen:typedChildren="GetOrders">
      <xs:selector xpath=".//Orders" />
      <xs:field xpath="CustomerID" />
    </xs:keyref>
  </xs:element>
</xs:schema>
The following code example uses a strongly typed DataSet created from the sample schema. It uses one DataAdapter to populate the Customers table and another DataAdapter to populate the Orders table. The strongly typed DataSet defines the DataRelations.

[Visual Basic]
Dim nwindConn As SqlConnection = New SqlConnection("Data Source=localhost;Integrated Security=SSPI;" & _
                                                   "Initial Catalog=northwind")
Dim custDA As SqlDataAdapter = New SqlDataAdapter("SELECT CustomerID, CompanyName, Phone FROM Customers", &
                                                  nwindConn)
Dim orderDA As SqlDataAdapter = New SqlDataAdapter("SELECT OrderID, CustomerID, EmployeeID, OrderDate FROM Orders", &
                                                   nwindConn)

' Populate a strongly typed DataSet.
nwindConn.Open()
Dim custDS As CustomerDataSet = New CustomerDataSet()
custDA.Fill(custDS, "Customers")
orderDA.Fill(custDS, "Orders")
nwindConn.Close()

' Add a strongly typed event.
AddHandler custDS.Customers.CustomerChanged, &
           New CustomerDataSet.CustomerChangeEventHandler(AddressOf OnCustomerChanged)

' Add a strongly typed DataRow.
Dim newCust As CustomerDataSet.Customer = custDS.Customers.NewCustomer()
newCust.CustomerID = "NEW01"
newCust.CompanyName = "My New Company"
custDS.Customers.AddCustomer(newCust)

' Navigate the child relation.
Dim customer As CustomerDataSet.Customer
Dim order As CustomerDataSet.Order

For Each customer In custDS.Customers
  Console.WriteLine(customer.CustomerID)
  For Each order In customer.GetOrders()
    Console.WriteLine(vbTab & order.OrderID)
  Next
Next

Private Shared Sub OnCustomerChanged(sender As Object, e As CustomerDataSet.CustomerChangeEvent)

End Sub
[C#]
SqlConnection nwindConn = new SqlConnection("Data Source=localhost;Integrated Security=SSPI;Initial Catalog=northwind");
SqlDataAdapter custDA = new SqlDataAdapter("SELECT CustomerID, CompanyName, Phone FROM Customers", nwindConn);
SqlDataAdapter orderDA = new SqlDataAdapter("SELECT OrderID, CustomerID, EmployeeID, OrderDate FROM Orders", nwindConn);

// Populate a strongly typed DataSet.
nwindConn.Open();
CustomerDataSet custDS = new CustomerDataSet();
custDA.Fill(custDS, "Customers");
orderDA.Fill(custDS, "Orders");
nwindConn.Close();

// Add a strongly typed event.
custDS.Customers.CustomerChanged += new
  CustomerDataSet.CustomerChangeEventHandler(OnCustomerChanged);

// Add a strongly typed DataRow.
CustomerDataSet.Customer newCust = custDS.Customers.NewCustomer();
newCust.CustomerID = "NEW01";
newCust.CompanyName = "My New Company";
custDS.Customers.AddCustomer(newCust);

// Navigate the child relation.
foreach(CustomerDataSet.Customer customer in custDS.Customers)
{
  Console.WriteLine(customer.CustomerID);
  foreach(CustomerDataSet.Order order in customer.GetOrders())
    Console.WriteLine("\t" + order.OrderID);
}

protected static void OnCustomerChanged(object sender, CustomerDataSet.CustomerChangeEvent e)
{

}

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpconusingannotationswithtypeddataset.asp

Aeros

Hi Aero

Thanks for the documentation.Here is my XML file : i want to create  schema for the following xml structure and when i load xml and xsd  into dataset ,it should create one table in dataset.
If anybody have clue pls help me or if anybody have sample code it really helpfu..


<main>
             
                <SummaryInformation>
                              <PickupDate>2/2/2004</PickupDate>
                    <PickUpRecord Pickupid="6481802191">
                    <Details>
                    </Details>
                    </PickUpRecord>    
                    <NoOfPackages >44</NoOfPackages>
                    <PublishedCharge>955.75</PublishedCharge>
                    <IncentiveCredit>-231.08</IncentiveCredit>
                    <BilledCharges>724.67</BilledCharges>
               </SummaryInformation>
                 <SummaryInformation>
                              <PickupDate>2/2/2004</PickupDate>
                    <PickUpRecord Pickupid="6481802191">
                    <Details>
                    </Details>
                    </PickUpRecord>    
                    <NoOfPackages >44</NoOfPackages>
                    <PublishedCharge>955.75</PublishedCharge>
                    <IncentiveCredit>-231.08</IncentiveCredit>
                    <BilledCharges>724.67</BilledCharges>
               </SummaryInformation>
</main>


Thanks
Ravi

here is my schema  :

When i load this xsd and xml  i found two table in dataset.We can change xsd structure but i can't change xml structure.

or
how do i map to the dataserver control.

It is creating the following table :

SummaryInformation
child to this is
PickupRecord

i want to bind the following elements.

Pickupdate        pickuprecord    no of packages.

pickupdate and noofpackages is in SummaryInformation and pickupid is in pickuprecord table

so how do i create dataview with summaryinformation and pickuprecord .so i can sort on any column.



<?xml version="1.0" standalone="yes" ?>
<xs:schema id="main" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
      <xs:element name="main" msdata:IsDataSet="true">
            <xs:complexType>
                  <xs:choice maxOccurs="unbounded">
                        <xs:element name="SummaryInformation">
                              <xs:complexType>
                                    <xs:sequence>
                                          <xs:element name="PickUpDate" type="xs:date" minOccurs="0" />
                                          <xs:element name="NoOfPackages" type="xs:integer" minOccurs="0" />
                                          <xs:element name="PublishedCharge" type="xs:decimal" minOccurs="0" />
                                          <xs:element name="IncentiveCredit" type="xs:decimal" minOccurs="0" />
                                          <xs:element name="BilledCharges" type="xs:decimal" minOccurs="0" />
                                          <xs:element name="PickUpRecord" minOccurs="0" maxOccurs="unbounded">
                                                <xs:complexType>
                                                      <xs:sequence>
                                                            <xs:element name="Details" type="xs:string" minOccurs="0" msdata:Ordinal="0" />
                                                      </xs:sequence>
                                                      <xs:attribute name="Pickupid" type="xs:integer" />
                                                </xs:complexType>
                                          </xs:element>
                                    </xs:sequence>
                              </xs:complexType>
                        </xs:element>
                  </xs:choice>
            </xs:complexType>
      </xs:element>
</xs:schema>


Thanks
Ravi

bind it to a datagrid:
' Visual Basic
Dim filePath As String
filePath = "Complete path where you saved the XML file"
dsAuthors.ReadXml(filePath)
With DataGrid1
   .DataSource = dsAuthors
   .DataMember = "authors"
   .CaptionText = .DataMember
End With

Private Sub WriteXmlToFile(thisDataSet As DataSet)
    If thisDataSet Is Nothing Then
        Return
    End If
    ' Create a file name to write to.
    Dim filename As String = "myXmlDoc.xml"
    ' Create the FileStream to write with.
    Dim myFileStream As New System.IO.FileStream _
       (filename, System.IO.FileMode.Create)
    ' Create an XmlTextWriter with the fileStream.
    Dim myXmlWriter As New System.Xml.XmlTextWriter _
       (myFileStream, System.Text.Encoding.Unicode)
    ' Write to the file with the WriteXml method.
    thisDataSet.WriteXml(myXmlWriter)
    myXmlWriter.Close()
End Sub

here my problem is i am able create the dataset.But i am nor sure it it creates multiple table in dataset, how can i mar to repeater.

When i want to sort on pickuprecord how can i do?

well the datagrid handles all that for you, if you chose the repeater you would have to manually write sorting and paging routines

sorry the question is not clear.I am explaining again

When i load xml and xsd into dataset.It is creating two tables.I want to create only one table in dataset.I can't change xml structure but i can chage xsd schema.

I think this time i explained better aero.

also check here:
http://support.microsoft.com/default.aspx?scid=kb;en-us;317940#2

His schema forced multiple tables, his only opton was a view or to change the schema, request points.

Aeros