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{description}
{excerpt}Returns an array of all the [Group|Group] objects in the collection.{excerpt}
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 public Group[] ListGroups()
{signature}{signature:vb.net}
Public Function ListGroups() As Group()
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{returns}An array of all the {{Group}} objects in the collection.{returns}
{remarks}
Note that the array returned by {{ListGroups}} is a copy of the internal structure that ExcelWriter uses to manage {{Groups}}.  As such, operations on individual {{Group}} objects in the array will take effect in the workbook, but operations on the array (e.g., removing {{Group}} objects or changing their order) will not have any effect.
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