GetValue(Int32) Method

In This Topic

Gets the value of the specified column in its native format.

Syntax

Visual Basic
C#

'Declaration
 
Public Overloads Overrides Function GetValue( _
   ByVal i As Integer _
) As Object

public override object GetValue( 
   int i
)

Parameters

i

Return Value

The value to return.

Remarks

This method returns System.DBNull for null data source columns.

Example

csharp

static void GetMyValue(MySqlConnection myConnection)
{
  MySqlCommand cmd = new MySqlCommand("SELECT * FROM Test.AllTypes");
  cmd.Connection = myConnection;
  myConnection.Open();
  try
  {
    MySqlDataReader reader = cmd.ExecuteReader();
    reader.Read();

    for (short i = 0; i < reader.FieldCount; i++)
    {
      if (reader.IsDBNull(i))
        Console.WriteLine("NULL");
      else
      {
        object someValue = reader.GetValue(i);
        Console.WriteLine(someValue.ToString());
      }
    }

    reader.Close();
  }
  finally
  {
    myConnection.Close();
  }
}

Visual Basic

Shared Sub GetMyValue(ByVal myConnection As MySqlConnection)
  Dim cmd As New MySqlCommand("SELECT * FROM Test.AllTypes")
  cmd.Connection = myConnection
  myConnection.Open()
  Try
    Dim reader As MySqlDataReader = cmd.ExecuteReader
    reader.Read()
    For i As Short = 0 To reader.FieldCount - 1
      If reader.IsDBNull(i) Then
        Console.WriteLine("NULL")
      Else
        Console.WriteLine(reader.GetValue(i).ToString)
      End If
    Next i
    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

Reference

MySqlDataReader Class
MySqlDataReader Members
Overload List
GetValues Method

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