Insert,update delete in vb.net - vb.net

Question

I edited my question and heres the whole code i used
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'GradesDBDataSet.tblGrades' table. You can move, or remove it, as needed.
Me.TblGradesTableAdapter.Fill(Me.GradesDBDataSet.tblGrades)
End Sub
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
TblGradesBindingSource.MoveNext()
End Sub
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
TblGradesBindingSource.RemoveCurrent()
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
TblGradesBindingSource.MovePrevious()
End Sub
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
TblGradesBindingSource.MoveLast()
End Sub
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
TblGradesBindingSource.MoveFirst()
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
TblGradesBindingSource.AddNew()
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
On Error GoTo saveErr
TblGradesBindingSource.EndEdit()
TblGradesTableAdapter.Update(GradesDBDataSet.tblGrades)
MsgBox("Record Save ", MsgBoxStyle.Information)
saveErr:
Exit Sub
End Sub
End Class
Hello Everyone... i have a problem using this code. . to save data to ms access from vb.net
i just follow a tutorial in youtube. it works BUT when i close the program then minutes later I run it again, data doesnt saved. . . Why? .
And can you suggest whats is the best way to Add, DELETE SAVE using vb.net? thanks eveyone ^_^

Answer 1

The most likely answer is that you are using a local data file that is overwritten each time you build.
Read this to learn how local data files are managed:
http://msdn2.microsoft.com/en-us/library/ms246989(VS.80).aspx
The solution in that case is to select the data file in the Solution Explorer, open the Properties window and set the Copy to output directory property to Copy if newer. The source file will only be copied to the output folder if you have changed that source file. That means that you can keep your test data between sessions.