invalid operation exception was unhandled Update requires a valid UpdateCommand - vb.net

Question

From these codes, I want to edit, add and save data from VB to MS Access permanently. I created dozens of Visual Basic projects but no progress at all.
Public Class Form1
Private Sub ProductDescBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ProductDescBindingNavigatorSaveItem.Click
Me.Validate()
Me.ProductDescBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(Me.INVSYSDataSet)
End Sub
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 'INVSYSDataSet.ProductDesc' table. You can move, or remove it, as needed.
Me.ProductDescTableAdapter.Fill(Me.INVSYSDataSet.ProductDesc)
End Sub
End Class
The problem is that "invalid operation exception was unhandled" appears, Update requires a valid UpdateCommand from code Me.TableAdapterManager.UpdateAll(Me.INVSYSDataSet)
If you need the DataSource, I can provide code from another VB project.
*updated second code, help for sql please
*updated srry bout that
Public Class Add_Products
Private myConString As String
Private con As OleDb.OleDbConnection = New OleDb.OleDbConnection
Private Dadapter As OleDb.OleDbDataAdapter
Private DSet As DataSet
Private DSet2 As DataSet
Private ConCMD As OleDb.OleDbCommand
Dim strSql As String
Dim inc As Integer
Dim MaxRows As Integer
Private Sub Add_Products_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
myConString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\larca\Documents\Visual Studio 2010\Projects\march16\march16\obj\x86\Debug\INVSYS.mdb"
con.ConnectionString = myConString
con.Open()
Dadapter = New OleDb.OleDbDataAdapter("select * from ProductDesc", con)
DSet = New DataSet
Dadapter.Fill(DSet, "ProductDesc")
DataGridView1.DataSource = DSet.Tables("ProductDesc")
con.Close()
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Try
Using con = New OleDb.OleDbConnection(myConString)
con.Open()
Dim cmd As OleDb.OleDbCommand
cmd = New OleDb.OleDbCommand("UPDATE ProductDesc", con)
Dadapter.UpdateCommand = cmd
Dadapter.Update(DSet, "ProductDesc")
End Using
Catch ex As Exception
MessageBox.Show(ex.Message)
End Try
End Sub
End Class

Answer 1

The error message is telling you that you have not defined an Update command for the DataAdapter. From DbDataAdapter.Update Method DataSet, String: If INSERT, UPDATE, or DELETE statements have not been specified, the Update method generates an exception.
To resolve this, assign the UpdateCommand an OleDbCommand object with your update logic, like this:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Using con = New OleDb.OleDbConnection(myConString)
con.Open()
Dim cmd As OleDbCommand
cmd = New OleDbCommand("<your update SQL goes here>", con)
DAdapter.UpdateCommand = cmd
Dadapter.Update(DSet, "ProductDesc")
End Using
End Sub
Simply put your SQL in the OleDbCommand and assign it to the UpdateCommand property.
Look at this link for a detailed example (and be sure to use parameterized queries like in the example to avoid SQL Injection attacks): OleDbDataAdapter.UpdateCommand Property