Replied 12 April 2021, 8:02 pm EST
FlexGrid has a property AllowMerging property, set it to some value other than None. Merging occurs if the adjacent cells contain the same non-empty string. There is no method to force a pair of cells to merge. Merging occurs automatically based on the cell contents
For more details about merging please refer to the below documentation link
Please let me know if you need any other help.