GetDouble(Int32) Method

In This Topic

Gets the value of the specified column as a double-precision floating point number.

Syntax

Visual Basic
C#

'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

csharp

static void GetMyDouble(SqlConnection myConnection) {
  SqlCommand cmd = new SqlCommand("SELECT * FROM Test.AllTypes");
  cmd.Connection = myConnection;
  myConnection.Open();
  try {
    SqlDataReader reader = cmd.ExecuteReader();
    reader.Read();
    double recievedDouble = reader.GetDouble(reader.GetOrdinal("DoubleCol"));
    reader.Close();
  }
  finally {
    myConnection.Close();
  }
}

Visual Basic

Shared Sub GetMyDouble(ByVal myConnection As SqlConnection)
  Dim cmd As New SqlCommand("SELECT * FROM Test.AllTypes")
  cmd.Connection = myConnection
  myConnection.Open()
  Try
    Dim reader As SqlDataReader = cmd.ExecuteReader
    reader.Read()
    Dim recievedDouble As Double = reader.GetDouble(reader.GetOrdinal("DoubleCol"))
    reader.Close()
  Finally
    myConnection.Close()
  End Try
End Sub

Reference

SqlDataReader Class
SqlDataReader Members
Overload List

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