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Gets a Boolean value indicating whether this is a custom icon set condition.
An icon set rule is custom when one or more criteria use an icon that does not come from the rule's selected IIconSet, including NoCellIcon.
bool Custom { get; }
ReadOnly Property Custom As Boolean
worksheet.Range["A1:A5"].Value = new object[,] {{10}, {30}, {50}, {70}, {90}};
IIconSetCondition condition = worksheet.Range["A1:A5"].FormatConditions.AddIconSetCondition();
bool custom = condition.Custom;