Grid rows are identified by unique integer values - row handles. The DataGridView.GroupRowHeight property changes the height of group rows. End users can tap group rows to expand and collapse groups. When data is grouped, the grid also displays group rows to separate groups of data rows. If you specify the DataGridView.RowHeight property, all data rows will have the same height. The grid automatically adjusts data row height to display the entire content of a cell. To obtain the number to data rows in the grid, use the DataGridView.RowCount property. Also use this event (not an expression) if you need to save changes that a user made in an unbound column.Р”Вata rows in the grid display records from the data source. It allows you to implement custom logic of any complexity to provide cell values. The DataGridView.CustomUnboundColumnData event is another way to populate an unbound column with data.

UnboundExpression - a formula (string expression) that automatically calculates the columnРІР‚в„ўs values.

UnboundType - the type of data the column should display (Boolean, DateTime, Decimal, Integer, String or Object).

FieldName - a unique string that does not match any field name in the gridРІР‚в„ўs underlying data source.

To create an unbound column in the grid, add a column object that corresponds to the type of data the column should display to the DataGridView.Columns collection, and set the following column properties: In addition to columns bound to data source fields, you can create unbound columns to display data values calculated based on values of other columns.

To fix a column, set its GridColumn.FixedStyle property to Start or End. The grid allows you to anchor (fix) columns to its left or right edge, so they always remain visible while a user scrolls the view horizontally. Each column object provides a set of properties to adjust column settings (e.g., data display format, column width, header caption, content alignment) and manage grid data ( sort and group). The GridColumn.FieldName property specifies the data source field to which the column is bound. The column displays a drop-down list that contains available values.Р”Р„ grid column used to display and edit date values.Р”Р„ grid column used to display and edit the time.Р”Р„ grid column that displays Boolean values and allows a user to change a cell value by switching between two states.Р”Р„ grid column that allows a user to edit a cell value by selecting an item from the predefined set.Р”Р„ column type that allows you to define a custom template for column cells. The column suggests values as a user types in a cell.Р”Р„ grid column used to display and edit text values. The following column types are supported:Р”Р„ grid column used to display and edit numeric values.Р”Р„ grid column used to display and edit text values.Р”Р„ grid column used to display and edit text values. An individual column is a GridColumn class descendant that corresponds to the columnРІР‚в„ўs data type.

The grid stores its columns in the DataGridView.Columns collection.

The AutoGenerateColumnsMode property specifies how a grid generates columns or prevents columns from automatically being generated. It automatically generates columns based on a bound data source, or you can add columns to the grid and associate them with data fields manually. The grid displays data source fields as columns. See the following help topic from the Getting Started section for details on data binding: How to: Bind Grid to Data. Note that unbound mode (add and save records directly to a grid) is not supported and the grid cannot operate without a data source. To show data in a grid and allow users to manage it, use the DataGridView.ItemsSource property to bind the grid to a data source. The following members accept/return DataGridView objects:Р”ВataGridView is a data-aware control that displays data in a tabular format.

Devexpress datagrid