Excel Grouping

GemBox.Spreadsheet supports grouping of rows and columns.

In the following example grouping is set both on rows and columns, where rows are expanded and columns are collapsed.

Grouping Screenshot
using GemBox.Spreadsheet;

class Program
{
    static void Main(string[] args)
    {
        // If using Professional version, put your serial key below.
        SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY");

        ExcelFile ef = new ExcelFile();
        ExcelWorksheet ws = ef.Worksheets.Add("Grouping");

        ws.Cells[0].Value = "Cell grouping examples:";

        // Vertical grouping.
        ws.Cells[2, 0].Value = "GroupA Start";
        ws.Rows[2].OutlineLevel = 1;
        ws.Cells[3, 0].Value = "A";
        ws.Rows[3].OutlineLevel = 1;
        ws.Cells[4, 1].Value = "GroupB Start";
        ws.Rows[4].OutlineLevel = 2;
        ws.Cells[5, 1].Value = "B";
        ws.Rows[5].OutlineLevel = 2;
        ws.Cells[6, 1].Value = "GroupB End";
        ws.Rows[6].OutlineLevel = 2;
        ws.Cells[7, 0].Value = "GroupA End";
        ws.Rows[7].OutlineLevel = 1;
        // Put outline row buttons above groups.
        ws.ViewOptions.OutlineRowButtonsBelow = false;

        // Horizontal grouping (collapsed).
        ws.Cells["E2"].Value = "Gr.C Start";
        ws.Columns["E"].OutlineLevel = 1;
        ws.Columns["E"].Hidden = true;
        ws.Cells["F2"].Value = "C";
        ws.Columns["F"].OutlineLevel = 1;
        ws.Columns["F"].Hidden = true;
        ws.Cells["G2"].Value = "Gr.C End";
        ws.Columns["G"].OutlineLevel = 1;
        ws.Columns["G"].Hidden = true;
        ws.Columns["H"].Collapsed = true;

        ef.Save("Grouping.%OutputFileType%");
    }
}
Imports GemBox.Spreadsheet

Module Program

    Sub Main()

        ' If using Professional version, put your serial key below.
        SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY")

        Dim ef As ExcelFile = New ExcelFile
        Dim ws As ExcelWorksheet = ef.Worksheets.Add("Grouping")

        ws.Cells(0).Value = "Cell grouping examples:"

        ' Vertical grouping.
        ws.Cells(2, 0).Value = "GroupA Start"
        ws.Rows(2).OutlineLevel = 1
        ws.Cells(3, 0).Value = "A"
        ws.Rows(3).OutlineLevel = 1
        ws.Cells(4, 1).Value = "GroupB Start"
        ws.Rows(4).OutlineLevel = 2
        ws.Cells(5, 1).Value = "B"
        ws.Rows(5).OutlineLevel = 2
        ws.Cells(6, 1).Value = "GroupB End"
        ws.Rows(6).OutlineLevel = 2
        ws.Cells(7, 0).Value = "GroupA End"
        ws.Rows(7).OutlineLevel = 1
        ' Put outline row buttons above groups.
        ws.ViewOptions.OutlineRowButtonsBelow = False

        ' Horizontal grouping (collapsed).
        ws.Cells("E2").Value = "Gr.C Start"
        ws.Columns("E").OutlineLevel = 1
        ws.Columns("E").Hidden = True
        ws.Cells("F2").Value = "C"
        ws.Columns("F").OutlineLevel = 1
        ws.Columns("F").Hidden = True
        ws.Cells("G2").Value = "Gr.C End"
        ws.Columns("G").OutlineLevel = 1
        ws.Columns("G").Hidden = True
        ws.Columns("H").Collapsed = True

        ef.Save("Grouping.%OutputFileType%")

    End Sub

End Module

Check next example or download examples from GitHub.