Close Method (OracleDataReader)

In This Topic

Syntax

Visual Basic
C#

'Declaration
 
Public Overrides Sub Close()

public override void Close()

Remarks

You must explicitly call the Close method after you have finished working with the OracleDataReader in order to use the associated OracleConnection for any other purpose.

Example

The following example creates a OracleConnection, a OracleCommand, and a OracleDataReader. The example reads through the data, writing it out to the console. Finally, the example closes the OracleDataReader, then the OracleConnection.

csharp

public void ReadMyData(string myConnString)
{
  string mySelectQuery = "SELECT DeptNo, DName FROM Test.Dept";
  OracleConnection myConnection = new OracleConnection(myConnString);
  OracleCommand myCommand = new OracleCommand(mySelectQuery,myConnection);
  myConnection.Open();
  OracleDataReader myReader;
  myReader = myCommand.ExecuteReader();
  // Always call Read before accessing data.
  while (myReader.Read()) {
    Console.WriteLine(myReader.GetInt32(0) + ", " + myReader.GetString(1));
  }
  // always call Close when done reading.
  myReader.Close();
  // Close the connection when done with it.
  myConnection.Close();
}

Visual Basic

Public Sub ReadMyData(myConnString As String)
  Dim mySelectQuery As String = "SELECT DeptNo, DName FROM Test.Dept"
  Dim myConnection As New OracleConnection(myConnString)
  Dim myCommand As New OracleCommand(mySelectQuery, myConnection)
  myConnection.Open()
  Dim myReader As OracleDataReader
  myReader = myCommand.ExecuteReader()
  ' Always call Read before accessing data.
  While myReader.Read()
    Console.WriteLine(myReader.GetInt32(0).ToString() + ", " _
      + myReader.GetString(1))
  End While
  ' always call Close when done reading.
  myReader.Close()
  ' Close the connection when done with it.
  myConnection.Close()
End Sub

Reference

OracleDataReader Class
OracleDataReader Members
OracleConnection Class
OracleCommand Class

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