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Devart.Data.Oracle Namespace / OracleDataReader Class / GetFieldType Method / GetFieldType(Int32) Method
Example

In This Topic
    GetFieldType(Int32) Method
    In This Topic
    Gets the System.Type that is the data type of the object.
    Syntax
    'Declaration
     
    Public Overloads Overrides Function GetFieldType( _
       ByVal i As Integer _
    ) As Type
    public override Type GetFieldType( 
       int i
    )

    Parameters

    i

    Return Value

    The System.Type that is the data type of the object.
    Example
    This sample shows how to retrieve names and types of all columns in a table.
    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();
      }
    }
    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
    See Also