Update Not reflecting to Access Database

Hi All,

I am using DataGridView to show table data and allowing user to add/update/delete
its content. I am manually creating sql on the basis of a value in a list box and getting the data through the following code:

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Dim sql As String = "SELECT fldAssetID, fldCategoryID, fldAssetName, fldDescription, fldDateAcquired, fldCost FROM tblAssets where fldCategoryID = " & lst_AssetCategories.SelectedValue
Dim cmd As OleDbCommand = New OleDbCommand(sql, Conn)
myDataAdapter = New OleDbDataAdapter(cmd)
myDataSet.Clear()
myDataAdapter.Fill(myDataSet, "tblAssets")
dgv_AssetDetails.DataSource = myDataSet
dgv_AssetDetails.DataMember = "tblAssets"

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and the code behind update button handler is :

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Dim myCommandBuilder As OleDbCommandBuilder = New OleDbCommandBuilder(myDataAdapter)
Dim dsChanged As DataSet = myDataSet.GetChanges()

If Not (dsChanged Is DBNull.Value) Then

MessageBox.Show("Changes have been saved to Database")

End If

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Class Variables :

Shared Conn As OleDbConnection = New OleDbConnection(WindowsApplication1.My.MySettings.Default.ITP400_IP2_AConnectionString)
Dim myDataAdapter As OleDbDataAdapter
Dim myDataSet As DataSet = New DataSet("myDataSet")
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The update event goes fine and if I try to get data again in the same session, I get the updated data
but the data is not reflecting in the database, so thats why if I exit the application and rerun it
it doesnt shows the updated data.

Thanks In Advance

Adil