Question

How do you update a single field in an Access database using an asp.net website in VisualStudio08. Assuming that the connection has been established, give step to step instructions of what to do in the design view.

Answer 1

Here is a console app that shows you how to use ADO.NET to update an Access DB. An alternate is to use Linq.

You could add a method to your CodeBehind that does something like this, and call it from your OnClick event handler.

Option Explicit On Option Strict On  Imports System Imports System.Data Imports System.Data.OleDb  Public Class Program     Public Shared Sub Main()          Dim connectionString As String = GetConnectionString()         Dim queryString As String = _             'UPDATE Categories Set CategoryName = 'ABC' WHERE CategoryID = 1;'          Using connection As New OleDbConnection(connectionString)             Dim command As OleDbCommand = connection.CreateCommand()             command.CommandText = queryString             Try                 connection.Open()                  Dim rowsAffected As Integer = command.ExecuteNonQuery()               Catch ex As Exception                 Console.WriteLine(ex.Message)             End Try         End Using     End Sub      Private Shared Function GetConnectionString() As String         ' To avoid storing the connection string in your code,           ' you can retrieve it from a configuration file.         ' Assumes Northwind.mdb is located in c:\Data folder.         Return 'Provider=Microsoft.Jet.OLEDB.4.0;Data Source=' _            & 'c:\Data\Northwind.mdb;User Id=admin;Password=;'     End Function End Class