This property allows you to group several cells on the y-axis within a single column heading.

The value of this property specifies how many cells should be merged together on the y-axis starting from the row identified by the Y property in the column identified by the X property.

Reference the first of the merged rows to inquire or modify the content of the merged cells.

If the span you generate includes cells that are not part of the heading, these cells will not be included in the span.

Columns whose heading includes a span can’t be sorted, filtered or moved. The Filterable-Columns style, the -Reordering-Columns style, the Sortable-Columns style and the Sort-Types property have no effect on these columns.

 

Example - In a grid where the first three rows are column headings, merge rows number 2 and 3 within the first column and put the title "Col.1" in the merged cells