CollectionFactoryExpressionExtensions.AddFor<TRow, TProperty>(CollectionFactory<DataGridSummaryGroupItemBuilder<TRow>>, Expression<Func<TRow, TProperty>>) Method

Adds group summary items to a strongly-typed DataGrid.

Namespace: DevExtreme.AspNet.Mvc

Assembly: DevExtreme.AspNet.Core.dll

Declaration

public static DataGridSummaryGroupItemBuilder<TRow> AddFor<TRow, TProperty>(
    this CollectionFactory<DataGridSummaryGroupItemBuilder<TRow>> factory,
    Expression<Func<TRow, TProperty>> expression
)

Parameters

Name	Type	Description
factory	CollectionFactory<DataGridSummaryGroupItemBuilder<TRow>>	The DataGrid summary item collection factory.
expression	Expression<Func<TRow, TProperty>>	A strongly-typed lambda expression. Returns a model property that supplies data to a summary item.

Type Parameters

Name	Description
TRow	The model type of the strongly-typed DataGrid.
TProperty	The type of the expression result.

Returns

Type	Description
DataGridSummaryGroupItemBuilder<TRow>	A reference to this instance after the method is called.

Remarks

Use this extension method to add group summary items to a strongly-typed DataGrid.

The method performs the following actions:

• Creates a new summary item
• Binds the summary item to the model property specified by the lambda expression
• Returns a DataGridSummaryGroupItemBuilder<T> instance so you can use its methods to customize the summary item

Razor C#

@(Html.DevExtreme().DataGrid<OrderViewModel>()
    .Summary(summary => summary
        .GroupItems(groupItems => {
            groupItems.AddFor(m => m.OrderDate); // call methods in a chain to customize the summary item
            groupItems.AddFor(m => m.ShipCity);
        })
    )
)

Refer to Nested Options and Collections for more information.

Note

A summary item is placed in the column that provides data for it. To add it to another column, use this method overload.