# Control Object Properties

JoinColumns | Merge Two or More Columns (Left to Right)

## Description

Merge two or more columns (left to right)

Set this property in the column that starts the join (leftmost) to the total number of joined columns - that number of columns will be merged into one. For columns belonging to an existing join, this property returns a negative integer indicating the column's current position within the join.

## Used By

GRID