drag and drop from a datagridview to a list box

i had this working, and then it stopped ...

not sure what i did.

object is to  grab a row from a datagridview and put it into whichever list box i end up over.

DGV has 3 columns, i am only putting column 1 and 0 in the list box.

now if i try and grab a row and move it.. the datagridview1_mousedown fires  but when i move the mouse, i get a circle with a slash and when i move it over the lists box the dragenter doesnt fire
when i let go of the mosue the circle slash dissappears

i have allow drop set to true for all the listboxes.






    Private Sub DataGridView1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles DataGridView1.MouseDown

        DataGridView1.DoDragDrop(DataGridView1.SelectedRows, DragDropEffects.Move)

    End Sub





    Private Sub ListBox1_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles ListBox1.DragDrop
        Dim rows As DataGridViewSelectedRowCollection = DirectCast(e.Data.GetData(GetType(DataGridViewSelectedRowCollection)), DataGridViewSelectedRowCollection)
        Dim Row_String As String
        For Each row As DataGridViewRow In rows
            Row_String = RTrim(LTrim(row.Cells(1).Value.ToString)) + " " + row.Cells(0).Value
            ListBox1.Items.Add(Row_String)
            DataGridView1.Rows.Remove(row)
        Next

    End Sub

    Private Sub ListBox1_DragEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs)

        If (e.Data.GetDataPresent(GetType(DataGridViewSelectedRowCollection))) Then
            e.Effect = DragDropEffects.Move
        End If


    End Sub


    Private Sub ListBox2_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs)
        Dim rows As DataGridViewSelectedRowCollection = DirectCast(e.Data.GetData(GetType(DataGridViewSelectedRowCollection)), DataGridViewSelectedRowCollection)
        Dim Row_String As String

        For Each row As DataGridViewRow In rows
            Row_String = RTrim(LTrim(row.Cells(1).Value.ToString)) + " " + row.Cells(0).Value
            ListBox2.Items.Add(Row_String)
            DataGridView1.Rows.Remove(row)
        Next

    End Sub

    Private Sub ListBox2_DragEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs)

        If (e.Data.GetDataPresent(GetType(DataGridViewSelectedRowCollection))) Then
            e.Effect = DragDropEffects.Move
        End If


    End Sub