#ShowAllInPreview
##About
Summary: Gets or sets the value indicating whether "CombinedTop Count" dropdown list should have the "All" item in preview.
Data Type: System.Boolean
Accepted Values:
Default Value: True
Impacted Features:
Purpose:
Usage:
Caveats:
##Code Samples ###Global.asax (C♯)
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###Global.asax (VB.NET)
```visualbasic