SummaryItemCollectionBase<T>.AddRange(IEnumerable<T>) Method

Adds a range of summary items to the collection.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v20.2.Core.dll

NuGet Packages: DevExpress.WindowsDesktop.Wpf.Grid.Core, DevExpress.Wpf.Grid.Core

Declaration

C#

public void AddRange(
    IEnumerable<T> summaries
)

VB.NET

Public Sub AddRange(
    summaries As IEnumerable(Of T)
)

Parameters

Name	Type	Description
summaries	IEnumerable<T>	A range of summary items (GridSummaryItem / TreeListSummaryItem).

Remarks

The following code sample adds summary items to the GridControl.TotalSummary collection:

C#

grid.TotalSummary.AddRange(new List<GridSummaryItem>() {
    new GridSummaryItem() { 
        SummaryType = SummaryItemType.Count, 
        FieldName = "OrderID" 
    },
    new GridSummaryItem() { 
        SummaryType = SummaryItemType.Max, 
        FieldName = "ModelPrice" 
    }
});

• The GridControl.TotalSummary / TreeListControlBase.TotalSummary property accesses the control’s total summary item collection.
• The GridControl.GroupSummary property accesses the control’s group summary item collection.
• The TreeListView.NodeSummary property accesses the control’s node summary item collection.

The collection contains the Add and AddRange methods to add summary items:

• When you use the Add methods, each method call updates the GridControl. To improve performance of adding operations, enclose the changes within the BeginUpdate and EndUpdate method calls. In this case, the GridControl is updated after the last call.
• When you use the AddRange method, the method call updates the GridControl after all summary items are added. You do not need to enclose changes within the BeginUpdate and EndUpdate method calls.