public CardViewColumn Column { get; }

Public ReadOnly Property Column As CardViewColumn

<dx:ASPxCardView ID="ASPxCardView1" OnHeaderFilterFillItems="ASPxCardView1_HeaderFilterFillItems" >
    <Settings ShowHeaderFilterButton="true" ShowHeaderPanel="true" />
    <Columns>
        <dx:CardViewTextColumn FieldName="ProductName" VisibleIndex="0" .>
        <dx:CardViewTextColumn FieldName="UnitPrice" VisibleIndex="1" .>
    </Columns>
</dx:ASPxCardView>

protected void ASPxCardView1_HeaderFilterFillItems(object sender, ASPxCardViewHeaderFilterEventArgs e)
{
    if (e.Column.FieldName != "UnitPrice") return;
    e.AddValue(String.Format("from {0} to {1}", 0, 100), string.Empty, String.Format("[UnitPrice] > {0} and [UnitPrice] < {1}", 0, 100));
    e.AddValue(String.Format(">= {0}", 100), string.Empty, String.Format("[UnitPrice] >= {0}", 100));
}