'Declaration Public MustOverride ReadOnly Property Band As UltraGridBand
public abstract UltraGridBand Band {get;}
The Band property of an object refers to a specific band in the grid as defined by an Band object. You use the Band property to access the properties of a specified Band object, or to return a reference to the Band object that is associated with the current object.
Band objects are the foundation of the hierarchical data structure used by UltraWinGrid. Any row or cell in the grid must be accessed through its Band object. Bands are also used to apply consistent formatting and behavior to the rows that they comprise. A Band object is used to display all the data rows from a single level of a data hierarchy. Band objects contain multiple sets of child Row objects that actually display the data of the recordset. All of the rows that are drawn from a single Command in the DataEnvironment make up a band.
The rows of a band are generally displayed in groups of one more in order to show rows from subsequent bands that are linked to rows in the current band via the structure of the data hierarchy. For example, if a hierarchical recordset has Commands that display Customer, Order and Order Detail data, each one of these Commands maps to its own Band in the UltraWinGrid. The rows in the Customer band will appear separated by any Order data rows that exist for the customers. By the same token, rows in the Order band will be appear separated to make room for Order Detail rows. How this looks depends on the ViewStyle settings selectedValue for the grid, but the concept of visual separation is readily apparent when the UltraWinGrid is used with any hierarchical recordset.
Although the rows in a band may appear to be separated, they are treated contiguously. When selecting a column in a band, you will see that the cells of that column become selectedValue in all rows for the band, regardless of any intervening rows. Also, it is possible to collapse the hierarchical display so that any children of the rows in the current band are hidden.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2