Windows Form - Changes in DataGrid cause Button to change

I have a simple form (code below).  What I would like to have happen is if the user makes changes to the information in the datagrid, then btnUpdate would change color.  For example, the user changes the vendor address from 123 Main St to 456 Elm St.  As soon as the user begins typing the change, btnUdate changes color to bring to the user's attention that they Update button needs to be clicked before exiting the program.

Is this possible?


Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        SqlDataAdapter1.Fill(DsVendors1)

    End Sub

    Private Sub btnClearDataSet_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClearDataSet.Click
        DsVendors1.Clear()

    End Sub

    Private Sub btnExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExit.Click
        Me.Close()
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        SqlDataAdapter1.Fill(DsVendors1)

    End Sub


    Private Sub btnUpdate_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click
        If DsVendors1.HasChanges Then
            SqlDataAdapter1.Update(DsVendors1)
        End If
    End Sub

    Private Sub ExitToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ExitToolStripMenuItem.Click
        Me.Close()
    End Sub

   ****** Private Sub DataGrid1_?????????(ByVal sender As Object, ByVal e As System.EventArgs) Handles DataGrid1.???????
        If DsVendors1.HasChanges Then
            btnUpdate.BackColor = Color.Red
            btnUpdate.ForeColor = Color.White
        End If
  *******  End Sub
End Class