Copy and Delete Excel sheet

Following example shows how to copy and delete worksheets.

One worksheet is used as the template for other worksheets.

Sheet Copying/Deleting Screenshot
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using System;
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 = ExcelFile.Load("%InputFileName%");

        // Get template sheet.
        ExcelWorksheet templateSheet = ef.Worksheets[0];

        // Copy template sheet.
        for (int i = 0; i < 4; i++)
            ef.Worksheets.AddCopy("Invoice " + (i + 1), templateSheet);

        // Delete template sheet.
        ef.Worksheets.Remove(0);

        DateTime startTime = DateTime.Now;

        // Go to the first Monday from today.
        while (startTime.DayOfWeek != DayOfWeek.Monday)
            startTime = startTime.AddDays(1);

        Random rnd = new Random();

        // For each sheet.
        for (int i = 0; i < 4; i++)
        {
            // Get sheet.
            ExcelWorksheet ws = ef.Worksheets[i];

            // Set some fields.
            ws.Cells["J5"].SetValue(14 + i);
            ws.Cells["J6"].SetValue(DateTime.Now);
            ws.Cells["J6"].Style.NumberFormat = "m/dd/yyyy";

            ws.Cells["D12"].Value = "ACME Corp";
            ws.Cells["D13"].Value = "240 Old Country Road, Springfield, IL";
            ws.Cells["D14"].Value = "USA";
            ws.Cells["D15"].Value = "Joe Smith";

            ws.Cells["E18"].Value = String.Format(startTime.ToShortDateString() + " until " + startTime.AddDays(11).ToShortDateString());

            for (int j = 0; j < 10; j++)
            {
                ws.Cells[21 + j, 1].SetValue(startTime); // Set date.
                ws.Cells[21 + j, 1].Style.NumberFormat = "dddd, mmmm dd, yyyy";
                ws.Cells[21 + j, 4].SetValue(rnd.Next(6, 9)); // Work hours.

                // Skip Saturday and Sunday.
                startTime = startTime.AddDays(j == 4 ? 3 : 1);
            }

            // Skip Saturday and Sunday.
            startTime = startTime.AddDays(2);

            ws.Cells["B36"].Value = "Payment via check.";
        }

        ef.Save("Sheet Copying Deleting.%OutputFileType%");
    }
}
Imports System
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 = ExcelFile.Load("%InputFileName%")

        ' Get template sheet.
        Dim templateSheet As ExcelWorksheet = ef.Worksheets(0)

        ' Copy template sheet.
        Dim i As Int32
        For i = 0 To 3 Step 1
            ef.Worksheets.AddCopy("Invoice " + (i + 1).ToString(), templateSheet)
        Next

        ' Delete template sheet.
        ef.Worksheets.Remove(0)

        Dim startTime As DateTime = DateTime.Now

        ' Go to the first Monday from today.
        While startTime.DayOfWeek <> DayOfWeek.Monday
            startTime = startTime.AddDays(1)
        End While

        Dim rnd As Random = New Random()

        ' For each sheet.
        For i = 0 To 3 Step 1

            ' Get sheet.
            Dim ws As ExcelWorksheet = ef.Worksheets(i)

            ' Set some fields.
            ws.Cells("J5").SetValue(14 + i)
            ws.Cells("J6").SetValue(DateTime.Now)
            ws.Cells("J6").Style.NumberFormat = "m/dd/yyyy"

            ws.Cells("D12").Value = "ACME Corp"
            ws.Cells("D13").Value = "240 Old Country Road, Springfield, IL"
            ws.Cells("D14").Value = "USA"
            ws.Cells("D15").Value = "Joe Smith"

            ws.Cells("E18").Value = String.Format(startTime.ToShortDateString() + " until " + startTime.AddDays(11).ToShortDateString())

            Dim j As Int32
            For j = 0 To 9 Step 1
                ws.Cells(21 + j, 1).SetValue(startTime) ' Set date.
                ws.Cells(21 + j, 1).Style.NumberFormat = "dddd, mmmm dd, yyyy"
                ws.Cells(21 + j, 4).SetValue(rnd.Next(6, 9)) ' Work hours.

                ' Skip Saturday and Sunday.
                If j = 4 Then startTime = startTime.AddDays(3) Else startTime = startTime.AddDays(1)
            Next

            ' Skip Saturday and Sunday.
            startTime = startTime.AddDays(2)

            ws.Cells("B36").Value = "Payment via check."

        Next

        ef.Save("Sheet Copying Deleting.%OutputFileType%")

    End Sub

End Module

Check next example or download examples from GitHub.