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2009-11-12T11:45:41.333
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What you are after is something like a nested ListView. Nesting these things gets messy but this should work: <pre><code><asp:GridView runat="server" ID="EntityGridView" AutoGenerateColumns="False" EditIndex="0" OnRowUpdating="EntityGridView_RowUpdating"> <Columns> <asp:TemplateField HeaderText="Name"> <ItemTemplate> <asp:Label ID="NameLabel" runat="server" Text='<%# Bind("Name") %>'></asp:Label> </ItemTemplate> <EditItemTemplate> <asp:TextBox ID="NameTextBox" runat="server" Text='<%# Bind("Name") %>'></asp:TextBox> </EditItemTemplate> </asp:TemplateField> <asp:TemplateField> <ItemTemplate> <asp:GridView runat="server" DataSource='<%# Eval("Fields") %>'/> </ItemTemplate> <EditItemTemplate> <asp:ListView runat="server" DataSource='<%# Eval("Fields") %>' ID="FieldListView"> <LayoutTemplate> <asp:PlaceHolder ID="itemPlaceholder" runat="server" /> </LayoutTemplate> <ItemTemplate> <asp:TextBox Text='<%# Container.DataItem %>' runat="server" ID="FieldValue"/> </ItemTemplate> </asp:ListView> </EditItemTemplate> </asp:TemplateField> <asp:CommandField ShowEditButton="True" /> </Columns> </asp:GridView> </code></pre> And your update method will look like: <pre><code>protected void EntityGridView_RowUpdating(object sender, GridViewUpdateEventArgs e) { var updatedEntity = new Entity {Fields = new List<string>()}; var row = EntityGridView.Rows[e.RowIndex]; var nameTextBox = (TextBox) row.FindControl("NameTextBox"); updatedEntity.Name = nameTextBox.Text; var fieldListView = (ListView) row.FindControl("FieldListView"); foreach (var dataItem in fieldListView.Items) { var fieldValueTextBox = (TextBox)dataItem.FindControl("FieldValue"); updatedEntity.Fields.Add(fieldValueTextBox.Text); } // Do your save etc here } </code></pre> Then you just bind your list of entities to the GridView.
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1. POHow to bind an Asp.NET details view to an object with a List<string> property
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.