OdbcDataReader.GetValues(Object[]) Method

public:
 override int GetValues(cli::array <System::Object ^> ^ values);

public:
 virtual int GetValues(cli::array <System::Object ^> ^ values);

public override int GetValues (object[] values);

public int GetValues (object[] values);

override this.GetValues : obj[] -> int

abstract member GetValues : obj[] -> int
override this.GetValues : obj[] -> int

Public Overrides Function GetValues (values As Object()) As Integer

Public Function GetValues (values As Object()) As Integer

Parameters

Returns

The number of instances of Object in the array.

Implements

Examples

using System;
using System.Data;
using System.Data.Odbc;

class Class1 {
   public static void Main() {

      using (OdbcConnection connection =
         new OdbcConnection("Driver={Microsoft Access Driver (*.mdb)};DBQ=C:\\Northwind.mdb")) {

         object[] meta = new object[10];
         bool read;

         OdbcCommand command = new OdbcCommand("select * from Shippers", connection);
         connection.Open();
         OdbcDataReader reader = command.ExecuteReader();

         if (reader.Read() == true) {
            do {
               int NumberOfColums = reader.GetValues(meta);

               for (int i = 0; i < NumberOfColums; i++)
                  Console.Write("{0} ", meta[i].ToString());

               Console.WriteLine();
               read = reader.Read();
            } while (read == true);
         }
         reader.Close();
      }
   }
}

Imports System.Data
Imports System.Data.Odbc

Module Module1
   Public Sub Main()
      Using connection As New OdbcConnection("Driver={Microsoft Access Driver (*.mdb)};DBQ=C:\\Northwind.mdb")
         Dim command As New OdbcCommand("select * from Shippers", connection)

         connection.Open()
         Dim reader As OdbcDataReader = command.ExecuteReader()

         Dim NumberOfColums As Integer
         Dim meta As Object() = New Object(10) {}
         Dim read As Boolean

         If reader.Read() = True Then
            Do
               NumberOfColums = reader.GetValues(meta)
               For i As Integer = 0 To NumberOfColums - 1
                  Console.Write("{0} ", meta(i).ToString())
               Next
               Console.WriteLine()
               read = reader.Read()
            Loop While read = True
         End If

         reader.Close()
      End Using
   End Sub
End Module

Remarks

For most applications, the GetValues method provides an efficient means for retrieving all columns, instead of retrieving each column individually.

You can pass an Object array that contains fewer than the number of columns that are contained in the resulting row. Only the amount of data the Object array holds is copied to the array. You can also pass an Object array whose length is more than the number of columns that are contained in the resulting row.

This method returns DBNull for null database columns.

Applies to

See also

• DataAdapters and DataReaders