ComponentOne ASP.NET MVC Edition
Working with Controls / FlexGrid / Work with FlexGrid / Detail Row
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Detail Row
In This Topic

FlexGrid provides support for detail row functionality, which adds a templated, expandable row to the control. You can add details section to any row in FlexGrid, which enables you to group data in a template that will be visible optionally. This allows end users to view additional data related to a row by simply selecting the row.

Built-in expand/collapse buttons are also provided to control the visibility of data within the expandable row. You can add nested grid within a Detail Row to create a hierarchical grid interface.

The following image shows how a FlexGrid with Detail Row appears. The example uses Customer data from local NorthWind database file C1NWind.mdf.


The following code examples demonstrate how to enable Detail Row in a FlexGrid:

DetailRowController.cs

C#
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public partial class FlexGridController : Controller
{
    public ActionResult DetailRow()
    {
        var customers = db.Customers.Take(10).ToList();
        var model = customers.Select(c => new CustomerWithOrders
        {
            CustomerID = c.CustomerID,
            CompanyName = c.CompanyName,
            Country = c.Country,
            City = c.City,
            Orders = (db.Orders.Where(o => o.CustomerID == c.CustomerID).ToList())
        });
        return View(model);
    }
}

DetailRow.cshtml

HTML
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@model IEnumerable<CustomerWithOrders>

<script type="text/javascript">
    function hasDetail(row) {
        return row.dataItem.Country.length > 5;
    }
</script>

<c1-flex-grid id="detailRowFlexGrid" auto-generate-columns="false" is-read-only="true">
    <c1-flex-grid-column binding="CustomerID" width="*"></c1-flex-grid-column>
    <c1-flex-grid-column binding="CompanyName" width="2*"></c1-flex-grid-column>
    <c1-flex-grid-column binding="Country" width="2*"></c1-flex-grid-column>
    <c1-flex-grid-column binding="City" width="2*"></c1-flex-grid-column>
    <c1-flex-grid-detail detail-visibility-mode="DetailVisibilityMode.ExpandSingle" row-has-detail="hasDetail">
        <c1-flex-grid auto-generate-columns="false" is-read-only="true" height="200px" template-bindings="@(new {ItemsSource="Orders"})">
                <c1-flex-grid-column binding="ShippedDate" width="*"></c1-flex-grid-column>
                <c1-flex-grid-column binding="Freight" width="*"></c1-flex-grid-column>
                <c1-flex-grid-column binding="ShipVia" width="*"></c1-flex-grid-column>
            </c1-flex-grid>
    </c1-flex-grid-detail>
    <c1-items-source source-collection="Model"></c1-items-source>
</c1-flex-grid>

Note that public class CustomerWithOrders inherits Customer class, and can be defined in the model named CustomerWithOrders, as shown below:

Example Title
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public class CustomerWithOrders : Customer
{
    public List<Order> Orders { get; set; }
}
See Also
Quick Start