How to expand the GroupBarItem programatically in WinForms GroupBar?
Expand Groupbar item
In GroupBar, it is possible to expand the GroupBaritem programmatically by using the property named “SelectedItem”.
Following Code snippet helps to achieve this requirement.
C#
//To Select the item in the groupbar this.gbVisualStudio.SelectedItem = this.listBox1.SelectedIndex;
VB
'To Select the item in the groupbar Me.gbVisualStudio.SelectedItem = Me.listBox1.SelectedIndex

Figure 1. Expand GroupBarItem in GroupBar with Image.

Figure 2. Expand GroupBarItem in GroupBar with Image.

Figure 3. Expand GroupBarItem in GroupBar with Image.
Samples: