Master -Child Grid in ASP.net 1.x

Master Detail/HierarchichlaGrid in ASP.Net 1.x -

Method -1 :- (In ASPX)

DataSource=’<%# CType(Container.DataItem, DataRowView).CreateChildView(“CustOrders”) %>’

e.g

<asp:DataGrid id=”InnerGrid” runat=”server” AutoGenerateColumns=”False”

DataSource=’<%# CType(Container.DataItem, DataRowView).CreateChildView(“CustOrders”) %>’>

<Columns>

---

</Columns>

Method 2:- (In Code)

<asp:DataGrid id=”Outer Grid” runat=”server” AutoGenerateColumns=”False” DataKeyField=”CustomerID” OnItemDataBound=”BindOrdersGrid”>

Sub BindOrdersGrid(sender As Object, e As DataGridItemEventArgs)

Dim oType As ListItemType = CType(e.Item.ItemType, ListItemType)

If oType = ListItemType.Item Or oType = ListItemType.AlternatingItem Then

Dim oGrid As DataGrid = CType(e.Item.FindControl(“InnerGrid”), DataGrid)

Dim sKey As String = dgr1.DataKeys(e.Item.ItemIndex)

Dim oView, oChildView As DataView

oView = oDataSet.Tables(“Customers”).DefaultView

oView.RowFilter = “CustomerID = ‘“ & sKey.value & “‘“

oChildView = oView(0).CreateChildView(oDataSet.Relations(“CustOrders”))

oGrid.DataSource = oChildView

oGrid.DataBind()

End If

End Sub

Method 3:- (In Code)

<asp:DataGrid id=”Outer Grid” runat=”server” AutoGenerateColumns=”False” DataKeyField=”CustomerID”>

<asp:TemplateColumn HeaderText=”Customer Details”>

<ItemTemplate>

<b><%# Container.DataItem(“CompanyName”) %></b><br />

City: <%# Container.DataItem(“City”) %><br />

Country: <%# Container.DataItem(“Country”) %><br />

CustomerID: “<%# Container.DataItem(“CustomerID”) %>”

</ItemTemplate>

</asp:TemplateColumn>

<asp:TemplateColumn HeaderText=”Order History”>

<ItemTemplate>

<asp:DataGrid id=” InnerGrid” runat=”server” AutoGenerateColumns=”False”

DataSource=’<%# GetOrdersGridRows( Container.DataItem(“CustomerID”)) %>’>

</ItemTemplate>

</asp:DataGrid> // Outer Grid

Function GetOrdersGridRows(sRowKey As String) As DataView

Dim oView, oChildView As DataView

oView = oDataSet.Tables(“Customers”).DefaultView

oView.RowFilter = “CustomerID = ‘“ & sRowKey & “‘“

oChildView = oView(0).CreateChildView(oDataSet.Relations(“CustOrders”))

Return oChildView

End Function

Thanks & Regards,

Arun Manglick || Tech Lead