Grouped Event

The event handler receives an argument of type EventArgs containing data related to this event.

This event is raised by the OnGrouped method when the user groups rows.

This example creates a group footer.

C#

private void Form1_Load(object sender, EventArgs e)
 {
  fpSpread1.Sheets[0].RowCount = 8;
  fpSpread1.Sheets[0].ColumnCount = 15;
  fpSpread1.Sheets[0].GroupBarInfo.Visible = true;
  fpSpread1.Sheets[0].AllowGroup = true;
  fpSpread1.Sheets[0].GroupFooterVisible = true;
  fpSpread1.Sheets[0].ColumnFooter.Visible = true;
  fpSpread1.Sheets[0].ColumnFooter.RowCount = 2;
  fpSpread1.Sheets[0].ColumnFooter.Columns[12].HorizontalAlignment = FarPoint.Win.Spread.CellHorizontalAlignment.Left;
  fpSpread1.Sheets[0].ColumnFooter.Cells[0, 12].RowSpan = 2;
  //Value

     for (int r = 0; r < fpSpread1.Sheets[0].RowCount; r++)
       {
          for (int j = 0; j < fpSpread1.Sheets[0].ColumnCount; j++)
          {
           fpSpread1.Sheets[0].Models.Data.SetValue(r, j, j + r * fpSpread1.Sheets[0].ColumnCount);
          }
       }

       int i = 0;
       fpSpread1.Sheets[0].ColumnFooter.SetAggregationType(0, 1, FarPoint.Win.Spread.Model.AggregationType.Sum);
       fpSpread1.Sheets[0].ColumnFooter.Cells[0, i].Value = "Sum";
 }

private void fpSpread1_Grouped(object sender, EventArgs e)
 {
  FarPoint.Win.Spread.Model.GroupDataModel gdm;
  gdm = (FarPoint.Win.Spread.Model.GroupDataModel)fpSpread1.ActiveSheet.Models.Data;
  gdm.GroupFooterVisible = true;
  FarPoint.Win.Spread.Model.Group g1 = (FarPoint.Win.Spread.Model.Group)gdm.Groups[1];           
  ((FarPoint.Win.Spread.Model.IAggregationSupport)g1.GroupFooter.DataModel).SetCellAggregationType(0, 0, FarPoint.Win.Spread.Model.AggregationType.Sum);
  fpSpread1.ActiveSheet.Models.Data = gdm;
  }

Visual Basic

  Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
      FpSpread1.Sheets(0).RowCount = 8
      FpSpread1.Sheets(0).ColumnCount = 15
      FpSpread1.Sheets(0).GroupBarInfo.Visible = True
      FpSpread1.Sheets(0).AllowGroup = True
      FpSpread1.Sheets(0).GroupFooterVisible = True
      FpSpread1.Sheets(0).ColumnFooter.Visible = True
      FpSpread1.Sheets(0).ColumnFooter.RowCount = 2
FpSpread1.Sheets(0).ColumnFooter.Columns(12).HorizontalAlignment = FarPoint.Win.Spread.CellHorizontalAlignment.Left
      'Value
      Dim r As Integer
      Dim j As Integer
      For r = 0 To FpSpread1.Sheets(0).RowCount
          For j = 0 To FpSpread1.Sheets(0).ColumnCount
              FpSpread1.Sheets(0).Models.Data.SetValue(r, j, j + r * FpSpread1.Sheets(0).ColumnCount)
          Next j
      Next r
      Dim i As Integer
      i = 0
      FpSpread1.Sheets(0).ColumnFooter.SetAggregationType(0, 1, FarPoint.Win.Spread.Model.AggregationType.Sum)
      FpSpread1.Sheets(0).ColumnFooter.Cells(0, i).Value = "Sum"
  End Sub

  Private Sub FpSpread1_Grouped(ByVal sender As Object, ByVal e As System.EventArgs) Handles FpSpread1.Grouped
      Dim gdm As FarPoint.Win.Spread.Model.GroupDataModel
      Dim g1 As FarPoint.Win.Spread.Model.Group
      gdm = FpSpread1.Sheets(0).Models.Data
      gdm.GroupFooterVisible = True
      g1 = gdm.Groups(1)
      CType(g1.GroupFooter.DataModel, FarPoint.Win.Spread.Model.IAggregationSupport).SetCellAggregationType(0, 0, FarPoint.Win.Spread.Model.AggregationType.Sum)
      FpSpread1.ActiveSheet.Models.Data = gdm
  End Sub

Target Platforms: Windows 2000 Professional (SP4), Windows 2000 Server, Windows 2003 Server (SP1), Windows Server 2012 R2, Windows 2008, Windows XP (SP2), Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10

Reference

FpSpread Class
FpSpread Members