Question about DataBinding with DataSet...

[J]

I have the following RadTreeView set up like this:

<telerik:RadTreeView ID="radtree" runat="server" Skin="Default">
    <Nodes>
        <telerik:RadTreeNode runat="server" Expanded="True" Text="Level_1">
            <Nodes>
                <telerik:RadTreeNode runat="server" Expanded="True" Text="Level_2">
                    <Nodes>
                        <telerik:RadTreeNode runat="server" Expanded="True" Text="Level_3">
                            <Nodes>
                                <telerik:RadTreeNode runat="server" Expanded="True" Text="Level_4">
                                    <Nodes>
                                        <telerik:RadTreeNode runat="server" Expanded="True" Text="Level_5">
                                            <Nodes>
                                                <telerik:RadTreeNode runat="server" Expanded="True" Text="Level_6">
                                                    <Nodes>
                                                        <telerik:RadTreeNode runat="server" Expanded="True" Text="Level_7">
                                                        </telerik:RadTreeNode>
                                                    </Nodes>
                                                </telerik:RadTreeNode>
                                            </Nodes>
                                        </telerik:RadTreeNode>
                                    </Nodes>
                                </telerik:RadTreeNode>
                            </Nodes>
                        </telerik:RadTreeNode>
                    </Nodes>
                </telerik:RadTreeNode>
            </Nodes>
        </telerik:RadTreeNode>
    </Nodes>
    <CollapseAnimation Duration="100" Type="OutQuint" />
    <ExpandAnimation Duration="100" />
</telerik:RadTreeView>

I also have the following DataSet set up like this:

DataSet oDS1 = null;
DbCommand dbCom = db.GetStoredProcCommand("SQL Code");
oDS1 = db.ExecuteDataSet(dbCom);

oDS1.Relations.Add(new DataRelation("Table0ToTable1", oDS1.Tables[0].Columns[0], oDS1.Tables[1].Columns[3], false));
oDS1.Relations.Add(new DataRelation("Table1ToTable2", oDS1.Tables[1].Columns[0], oDS1.Tables[2].Columns[3], false));
oDS1.Relations.Add(new DataRelation("Table2ToTable3", oDS1.Tables[2].Columns[0], oDS1.Tables[3].Columns[3], false));

If I wanna bind oDS1 to a RadTreeView like this:

radTree.DataSource = oDS1;
radTree.DataBind();

What event do I need to access to be able to say something like:
 'all rows in Table[3] need to add nodes at level_7'.

Jason

[J]

Ok I have figured out my answer.  I followed this link that Simon provided and changed my stored procedure to return 1 table with parent-child mappings.  And the TreeView bounded it all correctly.

As a side note, my RadTreeView had a width of 100% (my resolution is 1280 X 1024) and that made all the plus signs appear on the left where as the text was all centered.  I found that wrapping a div tag with the style of text-align:left made every thing left aligned.  Text and Plus signs.