aspnet-devexpress-dot-web-dot-aspxgridview-bf9e1ee5.md
Provides access to group summary items.
Namespace : DevExpress.Web
Assembly : DevExpress.Web.v25.2.dll
NuGet Package : DevExpress.Web
[DefaultValue(null)]
public ASPxSummaryItemCollection GroupSummary { get; }
<DefaultValue(Nothing)>
Public ReadOnly Property GroupSummary As ASPxSummaryItemCollection
| Type | Default | Description |
|---|---|---|
| ASPxSummaryItemCollection | null |
An ASPxSummaryItemCollection object that represents the collection of group summary items.
|
Group summaries are displayed within group rows when data grouping is applied. Summary items are represented by the ASPxSummaryItem objects and are stored within the GroupSummary collection. This collection provides methods and properties that allow you to add, remove and access summary items.
Note
In server mode, summary cannot be calculated for unbound columns whose values calculated via events (see ASPxGridView.CustomUnboundColumnData). Only columns with unbound expressions (see GridViewDataColumn.UnboundExpression) support summary calculation.
In code:
ASPxSummaryItem groupSummary = new ASPxSummaryItem();
groupSummary.FieldName = "Budget";
groupSummary.SummaryType = SummaryItemType.Max;
ASPxGridView1.GroupSummary.Add(groupSummary);
Dim groupSummary As ASPxSummaryItem = New ASPxSummaryItem()
groupSummary.FieldName = "Budget"
groupSummary.SummaryType = SummaryItemType.Max
ASPxGridView1.GroupSummary.Add(groupSummary)
In markup:
<dx:ASPxGridView ID="ASPxGridView1" runat="server" ...>
<!-- ... -->
<GroupSummary>
<dx:ASPxSummaryItem FieldName="UnitPrice" ShowInGroupFooterColumn="UnitPrice"
SummaryType="Count" />
</GroupSummary>
</dx:ASPxGridView>
View Example: How to use group footer and footer templates to customize group and total summaries
The following code snippets (auto-collected from DevExpress Examples) contain references to the GroupSummary property.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.
ASPxSummaryItem summaryItem = null;
foreach (ASPxSummaryItem currentItem in gridView.GroupSummary) {
if (currentItem.FieldName == fieldName) {
asp-net-web-forms-grid-create-report-based-on-grid-layout/CS/WebApplication1/ReportHelper.cs#L63
footerBand.BackColor = Color.LightGray;
foreach(ASPxSummaryItem item in aspxGridView1.GroupSummary) {
GridViewColumn col = aspxGridView1.Columns[item.FieldName];
Dim summaryItem As ASPxSummaryItem = Nothing
For Each currentItem As ASPxSummaryItem In gridView.GroupSummary
If currentItem.FieldName = fieldName Then
asp-net-web-forms-grid-create-report-based-on-grid-layout/VB/WebApplication1/ReportHelper.vb#L65
footerBand.BackColor = Color.LightGray
For Each item As ASPxSummaryItem In aspxGridView1.GroupSummary
Dim col As GridViewColumn = aspxGridView1.Columns(item.FieldName)
See Also