Column Types

The columns in *Grid Grouping Control provide various options for customization. The Table Descriptor available for Grid Grouping Control includes the Columns collection which is auto populated by the Fields and Expression Fields collection.

Expression Fields in Grid Grouping Control, refers to those fields which take into account the value of another field as an operand and performs arithmetic and relational operations on it. The grouping engine is equipped with its own formula engine for this purpose. Grouping, Sorting, filtering and summary creation can also be performed based on these expression fields.

Unbound columns can be associated with a grouping grid. These unbound columns let you evaluate field values at runtime similar to expression fields and also participate in all engine-related operations, such as grouping, sorting, summaries and filters.

The Grid's layout can be customized using templates. The different kinds of templates are listed below:

• Item Template - Used to customize the appearance of items such as Headers, the row being edited, and Form Mode among others.
• Control Template - Used to customize the appearance of the Row button and Expand button.
• Column Template - Used to customize the appearance of the Grid columns.
• Button Template - Used to customize the appearance of buttons in the Button Bar.

Using templates, you can customize the grid display. The below grid uses Item Template to display the values of 'Address', 'City' and 'Country' columns within the 'Address' column.