Public ReadOnly Property TargetModel As ISheetDataModel

Dim instance As GroupDataModel
Dim value As ISheetDataModel
 
value = instance.TargetModel

public ISheetDataModel TargetModel {get;}

private void button1_Click(object sender, EventArgs e)
{
FarPoint.Web.Spread.Model.GroupDataModel gm = new FarPoint.Web.Spread.Model.GroupDataModel(FpSpread1.ActiveSheetView.DataModel);
FarPoint.Web.Spread.SortInfo[] sort = new FarPoint.Web.Spread.SortInfo[1];
sort[0] = new FarPoint.Web.Spread.SortInfo(0, true);
gm.Group(sort, System.Collections.Comparer.Default);
FpSpread1.ActiveSheetView.DataModel = gm;
String msg = gm.TargetModel.RowCount.ToString();
Response.Write("alert('" + msg + "')");
}

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim gm As New FarPoint.Web.Spread.Model.GroupDataModel(FpSpread1.ActiveSheetView.DataModel)
Dim sort(0) As FarPoint.Web.Spread.SortInfo
sort(0) = New FarPoint.Web.Spread.SortInfo(0, True)
gm.Group(sort, System.Collections.Comparer.Default)
FpSpread1.ActiveSheetView.DataModel = gm
String msg = gm.TargetModel.RowCount.ToString()
Response.Write("alert('" & msg & "')")
End Sub