How to create an Excel file in Windows Forms

using Syncfusion.XlsIO;
using System;
using System.ComponentModel;
using System.Windows.Forms;

Imports Syncfusion.XlsIO
Imports System.ComponentModel
Imports System.Windows.Forms

private Button btnCreate;
private Label label;
 
private void InitializeComponent()
{
  btnCreate = new Button();
  label = new Label();
 
  //Label
  label.Location = new System.Drawing.Point(0, 40);
  label.Size = new System.Drawing.Size(426, 35);
  label.Text = "Click the button to view an Excel spreadsheet generated by Essential XlsIO. Please note that MS Excel Viewer or MS Excel is required to view the resultant document.";
  label.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
 
  //Button
  btnCreate.Location = new System.Drawing.Point(180, 110);
  btnCreate.Size = new System.Drawing.Size(85, 26);
  btnCreate.Text = "Create Document";
  btnCreate.Click += new EventHandler(btnCreate_Click); 
   
  //Create Spreadsheet
  ClientSize = new System.Drawing.Size(450, 150);
  Controls.Add(label);
  Controls.Add(btnCreate);
  Text = "Create Spreadsheet";
}

Private label As Label
Private WithEvents btnCreate As Button
 
Private Sub InitializeComponent()
  label = New Label()
  btnCreate = New Button()
 
  'Label
  label.Location = New Drawing.Point(0, 40)
  label.Size = New Drawing.Size(426, 35)
  label.Text = "Click the button to view an Excel spreadsheet generated by Essential XlsIO. Please note that MS Excel Viewer or MS Excel is required to view the resultant document."
  label.TextAlign = Drawing.ContentAlignment.MiddleCenter
 
  'Button
  btnCreate.Location = New Drawing.Point(180, 110)
  btnCreate.Size = New Drawing.Size(85, 26)
  btnCreate.Text = "Create Document"
 
  'Create Spreadsheet
  ClientSize = New Drawing.Size(450, 150)
  Controls.Add(btnCreate)
  Controls.Add(label)
  Text = "Create Spreadsheet"
End Sub

//Create an instance of ExcelEngine
using (ExcelEngine excelEngine = new ExcelEngine())
{
  //Set the default application version as Excel 2016
  excelEngine.Excel.DefaultVersion = ExcelVersion.Excel2016;
 
  //Create a workbook with a worksheet
  IWorkbook workbook = excelEngine.Excel.Workbooks.Create(1);
 
  //Access first worksheet from the workbook instance
  IWorksheet worksheet = workbook.Worksheets[0];
 
  //Insert sample text into cell “A1”
  worksheet.Range["A1"].Text = "Hello World";
 
  //Save the workbook to disk in xlsx format
  workbook.SaveAs("Output.xlsx");
}

'Create an instance of ExcelEngine
Using excelEngine As ExcelEngine = New ExcelEngine
 
  'Set the default application version as Excel 2016
  excelEngine.Excel.DefaultVersion = ExcelVersion.Excel2016
 
  'Create a workbook with a worksheet
  Dim workbook As IWorkbook = excelEngine.Excel.Workbooks.Create(1)
 
  'Access first worksheet from the workbook instance
  Dim worksheet As IWorksheet = workbook.Worksheets(0)
 
  'Insert sample text into cell “A1”
  worksheet.Range("A1").Text = "Hello World"
 
  'Save the workbook to disk in xlsx format
  workbook.SaveAs("Output.xlsx")
 
End Using