MagentoDataReader Class

In This Topic

Reads a forward-only stream of rows from Adobe Commerce.

Syntax

Visual Basic
C#

'Declaration
 
Public NotInheritable Class MagentoDataReader 
   Inherits Devart.Data.SqlShimDataReader
   Implements System.Collections.IEnumerable, System.Data.IDataReader, System.Data.IDataRecord, System.IDisposable

public sealed class MagentoDataReader : Devart.Data.SqlShimDataReader, System.Collections.IEnumerable, System.Data.IDataReader, System.Data.IDataRecord, System.IDisposable

Remarks

To create a MagentoDataReader, you must call the ExecuteReader method of the MagentoCommand object, rather than directly using a constructor.

System.Data.Common.DbDataReader.IsClosed and Devart.Data.SqlShimDataReader.RecordsAffected are the only properties that you can call after the MagentoDataReader is closed. In some cases, you must call Devart.Data.SqlShimDataReader.Close before you can call Devart.Data.SqlShimDataReader.RecordsAffected.

Example

The following example creates a MagentoConnection, a MagentoCommand, and a MagentoDataReader. The example reads through the data, writing it out to the console. Finally, the example closes the MagentoDataReader, then the MagentoConnection.

csharp

public void ReadMyData(string myConnString)  {
        MagentoConnection adobe commerceConnection = new MagentoConnection(myConnString);
        MagentoCommand adobe commerceCommand = (MagentoCommand)adobe commerceConnection.CreateCommand();
        adobe commerceCommand.CommandText = "SELECT customer_id, firstname, lastname FROM Customers";
        adobe commerceConnection.Open();
        MagentoDataReader adobe commerceReader = adobe commerceCommand.ExecuteReader();
        try {
                // Always call Read before accessing data.
                while (adobe commerceReader.Read()) {
                Console.WriteLine(adobe commerceReader.GetInt32(0).ToString() + " " + 
                adobe commerceReader.GetString(1) + " " + adobe commerceReader.GetString(2));
        }
        }
        finally {
                // always call Close when done reading.
                adobe commerceReader.Close();

                // Close the connection when done with it.
                adobe commerceConnection.Close();
        }
}

Visual Basic

Public Sub ReadMyData(ByVal myConnString As String)
        Dim adobe commerceConnection As New MagentoConnection(myConnString)
        Dim adobe commerceCommand As MagentoCommand = adobe commerceConnection.CreateCommand()
                adobe commerceCommand.CommandText = "SELECT customer_id, firstname, lastname FROM Customers"
        adobe commerceConnection.Open()
        Dim adobe commerceReader As MagentoDataReader = adobe commerceCommand.ExecuteReader()
        Try
                ' Always call Read before accessing data.
                While adobe commerceReader.Read()
                        Console.WriteLine(String.Concat(adobe commerceReader.GetInt32(0).ToString(), " ", _
                        adobe commerceReader.GetString(1), " ", adobe commerceReader.GetString(2)))
                End While
        Finally
                ' always call Close when done reading.
                adobe commerceReader.Close()

                        ' Close the connection when done with it.
                        adobe commerceConnection.Close()
        End Try
End Sub

Inheritance Hierarchy

System.Object
   System.MarshalByRefObject
      System.Data.Common.DbDataReader
         Devart.Common.DbDataReaderBase
            Devart.Data.SqlShimDataReader
               Devart.Data.Magento.MagentoDataReader

Reference

MagentoDataReader Members
Devart.Data.Magento Namespace
MagentoConnection Class
MagentoCommand Class

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