GanttControl.QueryItemTemplate Event

Allows you to assign HTML-CSS templates from the GanttControl.HtmlTemplates collection to UI elements of the required type.

Namespace: DevExpress.XtraGantt

Assembly: DevExpress.XtraGantt.v21.2.dll

NuGet Packages: DevExpress.Win.Design, DevExpress.Win.Gantt

Declaration

C#

[DXCategory("Events")]
public event QueryItemTemplateEventHandler QueryItemTemplate

VB.NET

<DXCategory("Events")>
Public Event QueryItemTemplate As QueryItemTemplateEventHandler

Event Data

The QueryItemTemplate event's data class is DevExpress.XtraGantt.QueryItemTemplateEventArgs.

Remarks

The code below assigns the “TaskTemplate” template to regular and summary tasks, “TaskProgressTemplate” to progress lines of regular and summary tasks, and “TaskTextLabelTemplate” to text labels.

C#

void GanttControl1_QueryItemTemplate(object sender, QueryItemTemplateEventArgs e) {
    switch(e.ItemType) {
        case GanttChartItemType.Task:
        case GanttChartItemType.SummaryTask:
            e.Template.Assign(TaskTemplate);
            break;
        case GanttChartItemType.Progress:
        case GanttChartItemType.SummaryTaskProgress:
            e.Template.Assign(TaskProgressTemplate);
            break;
        case GanttChartItemType.TextLabel:
            e.Template.Assign(TaskTextLabelTemplate);
            break;
    }
}

VB.NET

Private Sub GanttControl1_QueryItemTemplate(ByVal sender As Object, ByVal e As QueryItemTemplateEventArgs)
    Select Case e.ItemType
        Case GanttChartItemType.Task, GanttChartItemType.SummaryTask
            e.Template.Assign(TaskTemplate)
        Case GanttChartItemType.Progress, GanttChartItemType.SummaryTaskProgress
            e.Template.Assign(TaskProgressTemplate)
        Case GanttChartItemType.TextLabel
            e.Template.Assign(TaskTextLabelTemplate)
    End Select
End Sub

See this documentation article for more information: HTML Templates in Gantt Control.