Gets or sets the number of columns this cell spans.
Namespace:
C1.C1Rdl.Rdl2008Default: 1.
Must be 1 for CellContents inside TablixCell unless all column groups are static between the spanned cells and the common ancestor of those cells.
Ignored for CellContents inside TablixHeader.Assembly: C1.C1Report.2 (in C1.C1Report.2.dll)