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 ordinal As Integer _
) As String

public override string GetDataTypeName( 
   int ordinal
)

Parameters

ordinal: The zero-based column ordinal.

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(FreshBooksConnection freshbooksConnection)
{
  FreshBooksCommand cmd = new FreshBooksCommand("SELECT * FROM Client");
  cmd.Connection = freshbooksConnection;
  freshbooksConnection.Open();
  try
  {
    FreshBooksDataReader 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
  {
    freshbooksConnection.Close();
  }
}

Visual Basic

Public Sub GetFields(ByVal freshbooksConnection As FreshBooksConnection)
  Dim cmd As FreshBooksCommand = New FreshBooksCommand("SELECT * FROM Client")
  cmd.Connection = freshbooksConnection
  freshbooksConnection.Open()
  Try
    Dim reader As FreshBooksDataReader = 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
    freshbooksConnection.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
GetFieldType Method
GetName Method

Send Feedback