GetFieldType(Int32) Method

In This Topic

Gets the System.Type that is the data type of the object.

Syntax

Visual Basic
C#

'Declaration
 
Public Overloads Overrides Function GetFieldType( _
   ByVal ordinal As Integer _
) As Type

public override Type GetFieldType( 
   int ordinal
)

Parameters

ordinal: The zero-based column ordinal.

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.

csharp

public void GetFields(MailChimpConnection mailchimpConnection)
{
  MailChimpCommand cmd = new MailChimpCommand("SELECT * FROM Folders");
  cmd.Connection = mailchimpConnection;
  mailchimpConnection.Open();
  try
  {
    MailChimpDataReader 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
  {
    mailchimpConnection.Close();
  }
}

Visual Basic

Public Sub GetFields(ByVal mailchimpConnection As MailChimpConnection)
  Dim cmd As MailChimpCommand = New MailChimpCommand("SELECT * FROM Folders")
  cmd.Connection = mailchimpConnection
  mailchimpConnection.Open()
  Try
    Dim reader As MailChimpDataReader = 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
    mailchimpConnection.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

SqlShimDataReader Class
SqlShimDataReader Members
Overload List
GetName Method

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