Close Method (SQLiteDataReader)

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 SQLiteDataReader in order to use the associated SQLiteConnection for any other purpose.

Example

The following example creates a SQLiteConnection, a SQLiteCommand, and a SQLiteDataReader. The example reads through the data, writing it out to the console. Finally, the example closes the SQLiteDataReader, then the SQLiteConnection.

csharp

public void ReadMyData(string myConnString)
{
  string mySelectQuery = "SELECT DeptNo, DName FROM Dept";
  SQLiteConnection sqConnection = new SQLiteConnection(myConnString);
  SQLiteCommand sqCommand = new SQLiteCommand(mySelectQuery,sqConnection);
  sqConnection.Open();
  SQLiteDataReader sqReader;
  sqReader = sqCommand.ExecuteReader();
  // Always call Read before accessing data.
  while (sqReader.Read()) {
    Console.WriteLine(sqReader.GetInt32(0) + ", " + sqReader.GetString(1));
  }
  // always call Close when done reading.
  sqReader.Close();
  // Close the connection when done with it.
  sqConnection.Close();
}

Visual Basic

Public Sub ReadMyData(myConnString As String)
  Dim mySelectQuery As String = "SELECT DeptNo, DName FROM Dept"
  Dim sqConnection As New SQLiteConnection(myConnString)
  Dim sqCommand As New SQLiteCommand(mySelectQuery, sqConnection)
  sqConnection.Open()
  Dim sqReader As SQLiteDataReader
  sqReader = sqCommand.ExecuteReader()
  ' Always call Read before accessing data.
  While sqReader.Read()
    Console.WriteLine(sqReader.GetInt32(0).ToString() + ", " _
      + sqReader.GetString(1))
  End While
  ' always call Close when done reading.
  sqReader.Close()
  ' Close the connection when done with it.
  sqConnection.Close()
End Sub

Reference

SQLiteDataReader Class
SQLiteDataReader Members
SQLiteConnection Class
SQLiteCommand Class

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