CaptionsectionWhen a group has only one item, you can create a Custom Grouping Engine and override the IsChildVisible() property to display the single item group without a caption. In the override, you have check whether the passed-in element is a CaptionSection, and then check its record count, to decide whether it returns True or False, indicating whether the caption is to be displayed or not. To make sure that the single record CaptionSection is always displayed as expanded, you can add a check to the IsChildVisible override when the passed-in element is a DetailsSection. C# public override bool IsChildVisible(Element el)
{
if (el is CaptionSection)
{
if (this.Details == null || this.Records.Count == 0 || this.Records.Count > 1)
return true;
else
return false;
}
else if (el is DetailsSection)
{
if (this.Details == null || this.Records.Count == 0 || this.Records.Count > 1)
return el.ParentGroup.IsExpanded;
else
return true;
}
else
return el.ParentGroup.IsExpanded;
}
VB Public Overrides Function IsChildVisible(ByVal el As Element) As Boolean If TypeOf el Is CaptionSection Then If Me.Details Is Nothing OrElse Me.Records.Count = 0 OrElse Me.Records.Count > 1 Then Return True Else Return False End If ElseIf TypeOf el Is DetailsSection Then If Me.Details Is Nothing OrElse Me.Records.Count = 0 OrElse Me.Records.Count > 1 Then Return el.ParentGroup.IsExpanded Else Return True End If Else Return el.ParentGroup.IsExpanded End If End Function Samples: C#: GroupCaption-C# VB: GroupCaption-VB |
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