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{description}
{excerpt}Groups or outlines a contiguous set of columns.{excerpt}
{signature:C#}
 public void GroupColumns(int startColumnIndex, int numColumns, boolean collapsed)
{signature}{signature:vb.net}
Public Sub GroupColumns(ByVal startColumnIndex As Integer, ByVal numColumns As Integer, ByVal collapsed As Boolean)
{signature}
{parameters}
{param:startColumnIndex}The 0\-based index of the starting column.{param}
{param:numColumns}The number of Columns to group.{param}
{param:collapsed}Whether or not the group is collapsed.{param}
{example}{code:csharp|title=C#}
ws.GroupColumns(0, 5, true);{code}
{code:vb.net|title=vb.net}
ws.GroupColumns(0, 5, True){code}

{example}