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V25.1
  • SummaryItemCollectionBase<T>.AddRange(IEnumerable<T>) Method

    Adds a range of summary items to the collection.

    Namespace: DevExpress.Xpf.Grid

    Assembly: DevExpress.Xpf.Grid.v25.1.Core.dll

    NuGet Package: DevExpress.Wpf.Grid.Core

    Declaration

    public void AddRange(
        IEnumerable<T> summaries
    )

    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:

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

    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.
    See Also