Du kan få et eksempel her - det er godt nok gridviews, men det illustrerer forhåbentlig en mulighed:
<body>
<form id="form1" runat="server">
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="CollectionSource" DataKeyNames="Id">
<Columns>
<asp:CommandField ShowSelectButton="True" />
<asp:BoundField DataField="Id" HeaderText="Id" SortExpression="Id" />
<asp:BoundField DataField="Text" HeaderText="Text" SortExpression="Text" />
</Columns>
</asp:GridView>
<asp:ObjectDataSource ID="CollectionSource" runat="server" SelectMethod="GetItems" TypeName="Res1"></asp:ObjectDataSource>
<br />
<asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False" DataSourceID="SubCollectionSource">
<Columns>
<asp:BoundField DataField="Id" HeaderText="Id" SortExpression="Id" />
<asp:BoundField DataField="Text" HeaderText="Text" SortExpression="Text" />
</Columns>
</asp:GridView>
<asp:ObjectDataSource ID="SubCollectionSource" runat="server" SelectMethod="GetItems" TypeName="Res2">
<SelectParameters>
<asp:ControlParameter ControlID="GridView1" Name="id" PropertyName="SelectedValue" Type="Int32" />
</SelectParameters>
</asp:ObjectDataSource>
</form>
</body>
Et par klasser til at "drive" ovenstående - kunne se sådan her ud:
public class Res1
{
public static IList GetItems()
{
List<Item> items = new List<Item>();
items.Add(new Item(1, "A"));
items.Add(new Item(2, "B"));
items.Add(new Item(3, "C"));
return items;
}
}
public class Item
{
private int m_Id;
private string m_Text;
public int Id
{
get { return m_Id; }
set { m_Id = value; }
}
public string Text
{
get { return m_Text; }
set { m_Text = value; }
}
public Item(int id, string text)
{
m_Id = id;
m_Text = text;
}
}
public class Res2
{
static List<SubItem> m_SubItems;
static Res2()
{
m_SubItems = new List<SubItem>();
m_SubItems.Add(new SubItem(1, "SA"));
m_SubItems.Add(new SubItem(2, "SB"));
m_SubItems.Add(new SubItem(3, "SC"));
m_SubItems.Add(new SubItem(1, "SAA"));
m_SubItems.Add(new SubItem(2, "SBB"));
m_SubItems.Add(new SubItem(3, "SCC"));
m_SubItems.Add(new SubItem(1, "SAAA"));
m_SubItems.Add(new SubItem(2, "SBBB"));
m_SubItems.Add(new SubItem(3, "SCCC"));
}
public static List<SubItem> GetItems(int id)
{
List<SubItem> foundItems = m_SubItems.FindAll(delegate(SubItem item)
{
if (item.Id == id)
return true;
return false;
});
return foundItems;
}
}
public class SubItem
{
private int m_Id;
private string m_Text;
public int Id
{
get { return m_Id; }
set { m_Id = value; }
}
public string Text
{
get { return m_Text; }
set { m_Text = value; }
}
public SubItem(int id, string text)
{
m_Id = id;
m_Text = text;
}
}
Mvh
