XmlReader to Retrieve Multiple Rows
You can use the SqlCommand object to generate an XmlReader object, which provides forward-only, stream-based access to XML data. The command (usually a stored procedure) must generate an XML-based result set, which for SQL Server 2000 usually consists of a SELECT statement with a valid FOR XML clause. The following code fragment illustrates this approach:
You can use the SqlCommand object to generate an XmlReader object, which provides forward-only, stream-based access to XML data. The command (usually a stored procedure) must generate an XML-based result set, which for SQL Server 2000 usually consists of a SELECT statement with a valid FOR XML clause. The following code fragment illustrates this approach:
public void
RetrieveAndDisplayRowsWithXmlReader()
{
using( SqlConnection conn = new SqlConnection(connectionString) )
{;
SqlCommand cmd = new SqlCommand("DATRetrieveProductsXML", conn
);
cmd.CommandType = CommandType.StoredProcedure;
try
{
conn.Open();
XmlTextReader xreader = (XmlTextReader)cmd.ExecuteXmlReader();
while ( xreader.Read() )
{
if ( xreader.Name == "PRODUCTS" )
{
string strOutput = xreader.GetAttribute("ProductID");
strOutput += " ";
strOutput += xreader.GetAttribute("ProductName");
Console.WriteLine( strOutput );
}
}
xreader.Close(); // XmlTextReader
does not support IDisposable so it can't be
// used within a using
keyword
}
}
The preceding code uses the following stored procedure:
CREATE PROCEDURE DATRetrieveProductsXML
AS
SELECT * FROM PRODUCTS
FOR XML AUTO
GO
