Question

I have a datagridView filled with my own object,
the representation of a table.

One of the attribute of my object is a list of childrens i’d like to display as a detailGrid.

So it’s kind of like:
-Main grid = header table
-DetailGrids = Details Table

I’ve binded data this way so far:

dgvHeaders.datasource = lstMyHeaders

Answer 1

You can use the RowEnter event to populate the Details Table. The DataBoundItem property gets the list item that the row is bound to.

 Private Sub dgvHeaders_RowEnter(ByVal sender AsObject, ByVal e As DataGridViewCellEventArgs) _
        Handles dgvHeaders.RowEnter
    Dim myHeaderObject As myHeaderClass = dgvHeaders.Rows(e.RowIndex).DataBoundItem, myHeaderClass)
    dgvDetails.DataSource=myHeaderObject.lstMyDetails
  End Sub