'Declaration
<System.ComponentModel.DefaultValueAttribute(System.Nullable`1, "")> <WebSysDescriptionAttribute("TreeNode_ShowCheckBox")> Public Property ShowCheckBox As System.Nullable(Of Boolean)
'Usage
Dim instance As NCustomTreeNode Dim value As System.Nullable(Of Boolean) instance.ShowCheckBox = value value = instance.ShowCheckBox
[System.ComponentModel.DefaultValue(System.Nullable`1, "")] [WebSysDescription("TreeNode_ShowCheckBox")] public System.Nullable<bool> ShowCheckBox {get; set;}