ExecuteReader() Method

In This Topic

Sends the CommandText to the Connection and builds a OracleDataReader.

Syntax

Visual Basic
C#

'Declaration
 
Public Overloads Shadows Function ExecuteReader() As OracleDataReader

public new OracleDataReader ExecuteReader()

Return Value

A OracleDataReader object.

Example

The following example creates a OracleCommand, then executes it by passing a string that is SQL SELECT statement, and a string to use to connect to the data source.

csharp

public void CreateOracleDataReader(string mySelectQuery,string myConnectionString)
{
  OracleConnection myConnection = new OracleConnection(myConnectionString);
  OracleCommand myCommand = new OracleCommand(mySelectQuery, myConnection);
  myCommand.Connection.Open();
  OracleDataReader myReader = myCommand.ExecuteReader();
  try
  {
    while(myReader.Read())
    {
      Console.WriteLine(myReader.GetString(0));
    }
  }
  finally
  {
    myReader.Close();
    myConnection.Close();
  }
}

Visual Basic

Public Sub CreateOracleDataReader(mySelectQuery As String, _
myConnectionString As String)
  Dim myConnection As New OracleConnection(myConnectionString)
  Dim myCommand As New OracleCommand(mySelectQuery, myConnection)
  myCommand.Connection.Open()
  Dim myReader As OracleDataReader = myCommand.ExecuteReader()
  Try
    While myReader.Read()
      Console.WriteLine(myReader.GetString(0))
    End While
  Finally
    myReader.Close()
    myConnection.Close()
  End Try
End Sub

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

OracleCommand Class
OracleCommand Members
Overload List
OracleDataReader Class
OracleConnection Class

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