You can customize the default merging behavior in two ways:

• Assign a custom IComparer class to the CustomComparer property.

  By default, the grid will merge adjacent cells that contain the same non-null value. String comparisons are case-sensitive and blanks are included.

  If you wanted the grid to merge cells using a case-insensitive comparison and trimming blanks, you could write a custom class that implements IComparer and assign it to the CustomComparer property.

• Write a new class that derives from the C1FlexGrid and override the GetMergedRange virtual method, providing your own custom merging logic.

  Note: For samples that show how to implement custom merging logic, see the CustomMerge, CustomMerge2, CustomMerge3, and CustomMerge4 samples on GrapeCity website.