GetDataTypeName(Int32) Method

In This Topic

Gets the name of the source data type.

Syntax

Visual Basic
C#

'Declaration
 
Public Overloads Overrides Function GetDataTypeName( _
   ByVal i As Integer _
) As String

public override string GetDataTypeName( 
   int i
)

Parameters

i

Return Value

The name of the back-end data type.

Example

This sample shows how to retrieve names and types of all columns in a table.

csharp

public void GetFields(OracleConnection myConnection)
{
  OracleCommand cmd = new OracleCommand("SELECT * FROM Test.Dept");
  cmd.Connection = myConnection;
  myConnection.Open();
  try
  {
    OracleDataReader reader = cmd.ExecuteReader();
    reader.Read();
    for (int i=0;i < reader.FieldCount;i++)
    {
      string fieldType = reader.GetDataTypeName(i);
      string fieldName = reader.GetName(i);
      string fieldType2 = reader.GetFieldType(i).FullName;
      Console.WriteLine(fieldName+"\t"+ fieldType+"\t"+ fieldType2);
    }        
    reader.Close();
  }
  finally
  {
    myConnection.Close();
  }
}

Visual Basic

Public Sub GetFields(ByVal myConnection As OracleConnection)
  Dim cmd As OracleCommand = New OracleCommand("SELECT * FROM Test.Dept")
  cmd.Connection = myConnection
  myConnection.Open()
  Try
    Dim reader As OracleDataReader = cmd.ExecuteReader()
    reader.Read()
    Dim i As Integer
    For i = 0 To reader.FieldCount - 1
      Dim fieldType As String = reader.GetDataTypeName(i)
      Dim fieldName As String = reader.GetName(i)
      Dim fieldType2 As String = reader.GetFieldType(i).FullName
      Console.WriteLine(fieldName & Chr(9) & fieldType & Chr(9) & fieldType2)
    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

OracleDataReader Class
OracleDataReader Members
Overload List
GetFieldType Method
GetName Method

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