borrar múltiples filas datagridview

Dim selectedCellCount As Integer = dgv_nodos_sii.SelectedRows.Count
Dim j As DataGridViewSelectedRowCollection = dgv_nodos_sii.SelectedRows


Seleccionar filas de mayor a menor

For Each row As DataGridViewRow In dgv_nodos_sii.SelectedRows
           MessageBox.Show(row.Index)
Next


Seleccionar filas de menor a mayor

For Each row As DataGridViewRow In dgv_nodos_sii.SelectedRows.Cast(Of DataGridViewRow).OrderBy(Function(dgvr) dgvr.Index)
               MessageBox.Show(row.Index)
Next

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