Public Overloads Overridable Sub CopyTo( _
   ByVal groupInfos() As GroupInfo, _
   ByVal index As Integer _
) 

Dim instance As GroupInfoCollection
Dim groupInfos() As GroupInfo
Dim index As Integer
 
instance.CopyTo(groupInfos, index)

public virtual void CopyTo( 
   GroupInfo[] groupInfos,
   int index
)

FpSpread1.ActiveSheetView.AllowColumnMove = true;
FpSpread1.ActiveSheetView.GroupBarVisible = true;
FpSpread1.ActiveSheetView.AllowGroup = true;

FarPoint.Web.Spread.GroupInfo gi = new FarPoint.Web.Spread.GroupInfo();
gi.BackColor = Color.Yellow;
FarPoint.Web.Spread.GroupInfo gi2 = new FarPoint.Web.Spread.GroupInfo();
gi2.BackColor = Color.Green;
FarPoint.Web.Spread.GroupInfoCollection gic = new FarPoint.Web.Spread.GroupInfoCollection();
gic.AddRange(new FarPoint.Web.Spread.GroupInfo[] { gi, gi2 });
FarPoint.Web.Spread.GroupInfo[] arr = new FarPoint.Web.Spread.GroupInfo[4];
gic.CopyTo(((Array)(arr)), 0);
FpSpread1.ActiveSheetView.GroupInfos.Add(arr[0]);

FpSpread1.BorderCollapse = FarPoint.Web.Spread.BorderCollapse.Separate
FpSpread1.ActiveSheetView.AllowColumnMove = True
FpSpread1.ActiveSheetView.GroupBarVisible = True
FpSpread1.ActiveSheetView.AllowGroup = True

Dim gi As New FarPoint.Web.Spread.GroupInfo
gi.BackColor = Color.Yellow
Dim gi2 As New FarPoint.Web.Spread.GroupInfo
gi2.BackColor = Color.Green
Dim gic As New FarPoint.Web.Spread.GroupInfoCollection()
gic.AddRange(New FarPoint.Web.Spread.GroupInfo() {gi, gi2})
Dim arr(4) As FarPoint.Web.Spread.GroupInfo
gic.CopyTo(CType(arr, Array), 0)
FpSpread1.ActiveSheetView.GroupInfos.Add(arr(0))