dotConnect for PostgreSQL Documentation
Devart.Data.PostgreSql Namespace / PgSqlDataReader Class / GetDouble Method / GetDouble(Int32) Method
Example

In This Topic
    GetDouble(Int32) Method
    In This Topic
    Gets the value of the specified column as a double-precision floating point number.
    Syntax
    'Declaration
     
    Public Overloads Overrides Function GetDouble( _
       ByVal i As Integer _
    ) As Double
    public override double GetDouble( 
       int i
    )

    Parameters

    i

    Return Value

    The value of the specified column.
    Remarks

    Call IsDBNull to check for null values before calling this method.

    Example
    static void GetMyDouble(PgSqlConnection myConnection) {
      PgSqlCommand cmd = new PgSqlCommand("SELECT * FROM Test.AllTypes");
      cmd.Connection = myConnection;
      myConnection.Open();
      try {
        PgSqlDataReader reader = cmd.ExecuteReader();
        reader.Read();
        double recievedDouble = reader.GetDouble(reader.GetOrdinal("DoubleCol"));
        reader.Close();
      }
      finally {
        myConnection.Close();
      }
    }
    Shared Sub GetMyDouble(ByVal myConnection As PgSqlConnection)
      Dim cmd As New PgSqlCommand("SELECT * FROM Test.AllTypes")
      cmd.Connection = myConnection
      myConnection.Open()
      Try
        Dim reader As PgSqlDataReader = cmd.ExecuteReader
        reader.Read()
        Dim recievedDouble As Double = reader.GetDouble(reader.GetOrdinal("DoubleCol"))
        reader.Close()
      Finally
        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

    See Also