Error [Column not found] Filtering datagridview with textbox

[1635321]

I am using this code

Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtSearch.TextChanged
        Dim dbDataSet As New DataTable
        Dim DV As New DataView(dbDataSet)
        DV.RowFilter = String.Format("PartNumber Like '%{0}%'", txtSearch.Text)
        DataGridView1.DataSource = DV
    End Sub

I get the error - Cannot find column [PartNumber].