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Docs > Components > Card View > Concepts > Data Representation Basics > Columns > Unbound Columns > Unbound Columns Overview
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Unbound Columns Overview

Unbound columns are not bound to any field in a data source. Use the ASPxCardView.CustomUnboundColumnData event to populate these columns manually.

An unbound column meets the following requirements.

  • Its CardViewColumn.FieldName property must be set to a unique value that does not refer to any field in ASPxCardView‘s data source.

  • The column’s CardViewColumn.UnboundType property must be set to an appropriate value based on the type of data the column displays (Boolean, DateTime, Decimal, Integer, String, Object). It should not be set to UnboundColumnType.Bound.