BigcommerceDataReader Class

In This Topic

Reads a forward-only stream of rows from BigCommerce.

Syntax

Visual Basic
C#

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

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

Remarks

To create a BigcommerceDataReader, you must call the ExecuteReader method of the BigcommerceCommand 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 BigcommerceDataReader 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 BigcommerceConnection, a BigcommerceCommand, and a BigcommerceDataReader. The example reads through the data, writing it out to the console. Finally, the example closes the BigcommerceDataReader, then the BigcommerceConnection.

csharp

public void ReadMyData(string myConnString)  {
        BigcommerceConnection bigcommerceConnection = new BigcommerceConnection(myConnString);
        BigcommerceCommand bigcommerceCommand = (BigcommerceCommand)bigcommerceConnection.CreateCommand();
        bigcommerceCommand.CommandText = "SELECT id, firstname, lastname FROM customers";
        bigcommerceConnection.Open();
        BigcommerceDataReader bigcommerceReader = bigcommerceCommand.ExecuteReader();
        try {
                // Always call Read before accessing data.
                while (bigcommerceReader.Read()) {
                Console.WriteLine(bigcommerceReader.GetInt32(0).ToString() + " " + 
                bigcommerceReader.GetString(1) + " " + bigcommerceReader.GetString(2));
        }
        }
        finally {
                // always call Close when done reading.
                bigcommerceReader.Close();

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

Visual Basic

Public Sub ReadMyData(ByVal myConnString As String)
        Dim bigcommerceConnection As New BigcommerceConnection(myConnString)
        Dim bigcommerceCommand As BigcommerceCommand = bigcommerceConnection.CreateCommand()
                bigcommerceCommand.CommandText = "SELECT id, firstname, lastname FROM customers"
        bigcommerceConnection.Open()
        Dim bigcommerceReader As BigcommerceDataReader = bigcommerceCommand.ExecuteReader()
        Try
                ' Always call Read before accessing data.
                While bigcommerceReader.Read()
                        Console.WriteLine(String.Concat(bigcommerceReader.GetInt32(0).ToString(), " ", _
                        bigcommerceReader.GetString(1), " ", bigcommerceReader.GetString(2)))
                End While
        Finally
                ' always call Close when done reading.
                bigcommerceReader.Close()

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

Inheritance Hierarchy

System.Object
   System.MarshalByRefObject
      System.Data.Common.DbDataReader
         Devart.Common.DbDataReaderBase
            Devart.Data.SqlShimDataReader
               Devart.Data.Bigcommerce.BigcommerceDataReader

Reference

BigcommerceDataReader Members
Devart.Data.Bigcommerce Namespace
BigcommerceConnection Class
BigcommerceCommand Class

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