The C1FlexGridBase.Cols property returns a reference to the list of columns that make up the grid. With this reference, you can add, remove, move, and count the columns. For more information on the tasks that can be performed with this collection, see the ColumnCollection object.

This property is read-only. The grid creates and manages the column collection for you.

Upgrade Note: In the VSFlexGrid ActiveX control, the Cols and FixedCols properties corresponded to the number of columns and fixed columns on the grid. In C1FlexGrid, use Cols.Count and Cols.Fixed instead.

Reference

C1FlexGrid Class
C1FlexGrid Members