DataSet.GetXmlSchema Method

public:
 System::String ^ GetXmlSchema();

public string GetXmlSchema ();

member this.GetXmlSchema : unit -> string

Public Function GetXmlSchema () As String

Returns

String that is the XML Schema for the XML representation of the data stored in the DataSet.

Examples

The following example creates a DataSet and DataTable, and then displays the schema in XML format.

private static void DemonstrateGetXml()
{
    // Create a DataSet with one table containing
    // two columns and 10 rows.
    DataSet dataSet = new DataSet("dataSet");
    DataTable table = dataSet.Tables.Add("Items");
    table.Columns.Add("id", typeof(int));
    table.Columns.Add("Item", typeof(string));

    // Add ten rows.
    DataRow row;
    for(int i = 0; i <10;i++)
    {
        row = table.NewRow();
        row["id"]= i;
        row["Item"]= "Item" + i;
        table.Rows.Add(row);
    }

    // Display the DataSet contents as XML.
    Console.WriteLine( dataSet.GetXml() );
}

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

    ' Add ten rows.
    Dim row As DataRow
    Dim i As Integer
    For i = 0 To 9
        row = table.NewRow()
        row("id") = i
        row("Item")= "Item" & i
        table.Rows.Add(row)
    Next

    ' Display the DataSet contents as XML.
    Console.WriteLine( dataSet.GetXml() )
End Sub

Remarks

Calling this method is identical to calling WriteXmlSchema, except that only the primary schema is written.

GetXmlSchema returns XML as a string, and therefore requires more overhead than WriteXmlSchema to write XML to a file.

If you build a DataSet using schema inference and serialize it using XML or Web services, the column ordering may change.

Applies to

See also

• Using DataSets in ADO.NET