OleDbEnumerator.GetRootEnumerator Method

public:
 static System::Data::OleDb::OleDbDataReader ^ GetRootEnumerator();

[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("OleDbConnection is not AOT-compatible.")]
public static System.Data.OleDb.OleDbDataReader GetRootEnumerator();

public static System.Data.OleDb.OleDbDataReader GetRootEnumerator();

[<System.Diagnostics.CodeAnalysis.RequiresDynamicCode("OleDbConnection is not AOT-compatible.")>]
static member GetRootEnumerator : unit -> System.Data.OleDb.OleDbDataReader

static member GetRootEnumerator : unit -> System.Data.OleDb.OleDbDataReader

Public Shared Function GetRootEnumerator () As OleDbDataReader

Returns

A OleDbDataReader that contains information about the visible OLE DB providers.

Attributes

RequiresDynamicCodeAttribute

Exceptions

Examples

The following console application retrieves information about all the visible OLE DB providers and displays the information in the console window.

Imports System.Data  
Imports System.Data.OleDb  

Module Module1  

  Sub Main()  
    Dim enumerator As New OleDbEnumerator  
    Dim reader As OleDbDataReader = OleDbEnumerator.GetRootEnumerator()  

    DisplayData(reader)  

    Console.WriteLine("Press any key to continue.")  
    Console.ReadKey()  
  End Sub  

  Private Sub DisplayData(ByVal reader As OleDbDataReader)  
    While reader.Read()  
      For i As Integer = 0 To reader.FieldCount - 1  
        Console.WriteLine("{0} = {1}", _  
         reader.GetName(i), reader.GetValue(i))  
      Next  
      Console.WriteLine("==================================")  
    End While  

  End Sub  
End Module  

using System;  
using System.Data;  
using System.Data.OleDb;  

class Program  
{  
 static void Main()  
 {  
   OleDbDataReader reader = OleDbEnumerator.GetRootEnumerator();  

   DisplayData(reader);  

   Console.WriteLine("Press any key to continue.");  
   Console.ReadKey();  
 }  

 static void DisplayData(OleDbDataReader reader)  
 {  
   while (reader.Read())  
   {  
     for (int i = 0; i < reader.FieldCount; i++)  
     {  
       Console.WriteLine("{0} = {1}",  
        reader.GetName(i), reader.GetValue(i));  
     }  
     Console.WriteLine("==================================");  
   }  
 }  
}  

Remarks

The reader returned by this method contains the following columns, all of which contain strings: