DataItem.UniqueId Property

The UniqueId property returns null for the newly created data item. If you add the created DataItem to a data-bound dashboard item (DataDashboardItem), the UniqueId will return an auto-generated identifier (DataIem0, DataItem1, etc.), which is unique inside a dashboard item.

You can use the value returned by the UniqueId property to identify the data item in the following cases:

• to refer to the specified data item in filter criteria, pass its identifier to the DataDashboardItem.FilterString property;
• to refer to the specified data item in the Expression format condition, pass its identifier to the FormatConditionExpression.Expression property.