Data Grid

Starting: Create a Windows Application type project and add a DataGrid control to the form. Leave DataGrid name as DataGrid1. Add Reference to the Namespace First thing you need to do is add reference to System.Data.OleDb namespace since I will use OldDb data providers. if System.Data namespace is not present, you might want to add this too. Imports System.Data Imports System.Data.OleDb Create OleDbDataAdapter Object Now you create a OleDbDataAdapter object and connect to a database table. ' create a connection string Dim connString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\Northwind.mdb" Dim myConnection As OleDbConnection = New OleDbConnection myConnection.ConnectionString = connString ' create a data adapter Dim da As OleDbDataAdapter = New OleDbDataAdapter("Select * from Customers", myConnection) Create a DataSet Object and Fill with the data You use Fill method of OleDbDataAdpater to fill data to a DataSet object. ' create a new dataset Dim ds As DataSet = New DataSet ' fill dataset da.Fill(ds, "Customers") Attach DataSet to DataGrid Now you use DataSource method of DataGrid to attached the DataSet data to the data grid. ' Attach DataSet to DataGrid DataGrid1.DataSource = ds.DefaultViewManager Here is entire source code written on the form load method. Imports System.Data Imports System.Data.OleDb ' some code here Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load ' create a connection string Dim connString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\Northwind.mdb"

Dim myConnection As OleDbConnection = New OleDbConnection myConnection.ConnectionString = connString ' create a data adapter Dim da As OleDbDataAdapter = New OleDbDataAdapter("Select * from Customers", myConnection) ' create a new dataset Dim ds As DataSet = New DataSet ' fill dataset da.Fill(ds, "Customers") ' write dataset contents to an xml file by calling WriteXml method ' Attach DataSet to DataGrid DataGrid1.DataSource = ds.DefaultViewManager End Sub End Class The output of the program looks like following figure.