TreeListSummaryItem.ShowInColumn Property
Gets or sets a value that specifies a column in whose footer cell the summary will be displayed.
Namespace: DevExpress.Web.ASPxTreeList
Assembly: DevExpress.Web.ASPxTreeList.v24.2.dll
NuGet Package: DevExpress.Web
#Declaration
#Property Value
Type | Default | Description |
---|---|---|
String | String. |
A String value that identifies the data column within the ASPx |
#Remarks
Note
The following column identifiers are used in searching for a column:
- The Name property
- The Field
Name property - The Caption property
Note that it is recommended to avoid using the same values between Name, Field
#Example
This example shows how to implement a custom summary calculation.
Create a summary item within the ASPxTreeList.Summary collection and customize its settings as shown below:
The ASPxTreeList.CustomSummaryCalculate event is handled to sum the budgets of selected departments. Finally, set the TreeListSettingsBehavior.ProcessSelectionChangedOnServer option to true
.
The image below shows the result:
using DevExpress.Data;
protected void ASPxTreeList2_CustomSummaryCalculate(object sender,
TreeListCustomSummaryEventArgs e) {
switch (e.SummaryProcess) {
case CustomSummaryProcess.Start:
e.Value = (int)0;
break;
case CustomSummaryProcess.Calculate:
if (e.Node.Selected)
e.Value = (int)e.Value + (int)e.Node["Budget"];
break;
case CustomSummaryProcess.Finalize:
break;
}
}