using System;
using System.Data;
using System.Diagnostics;
using System.IO;
using System.Windows.Forms;
using Bytescout.Spreadsheet;

namespace ImportExportFromWinFormsDataGrid.CSharp
{
	public partial class Form1 : Form
	{
		public Form1()
		{
			InitializeComponent();

			dataGrid1.DataSource = GetDemoDataTable();
		}

		private void btnImport_Click(object sender, EventArgs e)
		{
			Cursor = Cursors.WaitCursor;

			try
			{
				const string fileName = "CSharpImportFromDataTable.xls";

				// retrieve DataTable from DataGrid
				DataTable dataTable = (DataTable) dataGrid1.DataSource;

				// Create spreadsheet
				Spreadsheet spreadsheet = new Spreadsheet();

				// Import data from DataTable into spreadheet
				spreadsheet.ImportFromDataTable(dataTable);

				// Insert row with column captions
				Worksheet worksheet = spreadsheet.Worksheets[0];
				worksheet.Rows.Insert(0);
				for (int colIndex = 0; colIndex < dataTable.Columns.Count; colIndex++)
				{
					worksheet.Cell(0, colIndex).Value = dataTable.Columns[colIndex].Caption;
				}

				// Save the spreadsheet
				if (File.Exists(fileName)) File.Delete(fileName);
				spreadsheet.SaveAs(fileName);

				// Close spreadsheet
				spreadsheet.Close();

				// Open the spreadsheet
				Process.Start(fileName);
			}
			finally
			{
				Cursor = Cursors.Default;
			}
		}

		private void btnExport_Click(object sender, EventArgs e)
		{
			if (openFileDialog1.ShowDialog() == DialogResult.OK)
			{
				Cursor = Cursors.WaitCursor;

				try
				{
					// Create spreadsheet
					Spreadsheet spreadsheet = new Spreadsheet();

					// Load spreadsheet from file
					spreadsheet.LoadFromFile(openFileDialog1.FileName);

					// Export to DataGrid
					DataTable dataTable = spreadsheet.ExportToDataTable();
					dataGrid1.DataSource = dataTable;
				}
				finally
				{
					Cursor = Cursors.Default;
				}
			}
		}

		/// <summary>
		/// Fills a data table of the periodic table of elements.
		/// </summary>
		private DataTable GetDemoDataTable()
		{
			DataTable periodicTable = new DataTable("PeriodicTable");

			periodicTable.Columns.Add("Name", typeof(string));
			periodicTable.Columns.Add("Symbol", typeof(string));
			periodicTable.Columns.Add("AtomicNumber", typeof(int));

			DataRow dr = periodicTable.Rows.Add();
			dr[0] = "Hydrogen";
			dr[1] = "H";
			dr[2] = "1";

			dr = periodicTable.Rows.Add();
			dr[0] = "Helium";
			dr[1] = "He";
			dr[2] = "2";

			dr = periodicTable.Rows.Add();
			dr[0] = "Lithium";
			dr[1] = "Li";
			dr[2] = "3";

			dr = periodicTable.Rows.Add();
			dr[0] = "Beryllium";
			dr[1] = "Be";
			dr[2] = "4";

			dr = periodicTable.Rows.Add();
			dr[0] = "Boron";
			dr[1] = "B";
			dr[2] = "5";

			dr = periodicTable.Rows.Add();
			dr[0] = "Carbon";
			dr[1] = "C";
			dr[2] = "6";

			return periodicTable;
		}
	}
}

��namespace ImportExportFromWinFormsDataGrid.CSharp

{

	partial class Form1

	{

		/// <summary>

		/// Required designer variable.

		/// </summary>

		private System.ComponentModel.IContainer components = null;



		/// <summary>

		/// Clean up any resources being used.

		/// </summary>

		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>

		protected override void Dispose(bool disposing)

		{

			if (disposing && (components != null))

			{

				components.Dispose();

			}

			base.Dispose(disposing);

		}



		#region Windows Form Designer generated code



		/// <summary>

		/// Required method for Designer support - do not modify

		/// the contents of this method with the code editor.

		/// </summary>

		private void InitializeComponent()

		{

			this.dataGrid1 = new System.Windows.Forms.DataGrid();

			this.dataGridTableStyle1 = new System.Windows.Forms.DataGridTableStyle();

			this.dataGridTextBoxColumn1 = new System.Windows.Forms.DataGridTextBoxColumn();

			this.btnImport = new System.Windows.Forms.Button();

			this.btnExport = new System.Windows.Forms.Button();

			this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();

			((System.ComponentModel.ISupportInitialize) (this.dataGrid1)).BeginInit();

			this.SuspendLayout();

			// 

			// dataGrid1

			// 

			this.dataGrid1.Anchor = ((System.Windows.Forms.AnchorStyles) ((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)

						| System.Windows.Forms.AnchorStyles.Left)

						| System.Windows.Forms.AnchorStyles.Right)));

			this.dataGrid1.DataMember = "";

			this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;

			this.dataGrid1.Location = new System.Drawing.Point(12, 12);

			this.dataGrid1.Name = "dataGrid1";

			this.dataGrid1.Size = new System.Drawing.Size(438, 308);

			this.dataGrid1.TabIndex = 0;

			this.dataGrid1.TableStyles.AddRange(new System.Windows.Forms.DataGridTableStyle[] {

            this.dataGridTableStyle1});

			// 

			// dataGridTableStyle1

			// 

			this.dataGridTableStyle1.DataGrid = this.dataGrid1;

			this.dataGridTableStyle1.GridColumnStyles.AddRange(new System.Windows.Forms.DataGridColumnStyle[] {

            this.dataGridTextBoxColumn1});

			this.dataGridTableStyle1.HeaderForeColor = System.Drawing.SystemColors.ControlText;

			// 

			// dataGridTextBoxColumn1

			// 

			this.dataGridTextBoxColumn1.Format = "";

			this.dataGridTextBoxColumn1.FormatInfo = null;

			this.dataGridTextBoxColumn1.NullText = "";

			this.dataGridTextBoxColumn1.Width = 75;

			// 

			// btnImport

			// 

			this.btnImport.Anchor = ((System.Windows.Forms.AnchorStyles) ((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));

			this.btnImport.Location = new System.Drawing.Point(238, 326);

			this.btnImport.Name = "btnImport";

			this.btnImport.Size = new System.Drawing.Size(212, 23);

			this.btnImport.TabIndex = 1;

			this.btnImport.Text = "Import from DataGrid to spreadsheet";

			this.btnImport.UseVisualStyleBackColor = true;

			this.btnImport.Click += new System.EventHandler(this.btnImport_Click);

			// 

			// btnExport

			// 

			this.btnExport.Anchor = ((System.Windows.Forms.AnchorStyles) ((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));

			this.btnExport.Location = new System.Drawing.Point(238, 355);

			this.btnExport.Name = "btnExport";

			this.btnExport.Size = new System.Drawing.Size(212, 23);

			this.btnExport.TabIndex = 2;

			this.btnExport.Text = "Export from spreadsheet to DataGrid";

			this.btnExport.UseVisualStyleBackColor = true;

			this.btnExport.Click += new System.EventHandler(this.btnExport_Click);

			// 

			// openFileDialog1

			// 

			this.openFileDialog1.FileName = "openFileDialog1";

			this.openFileDialog1.Filter = "Excel files (*.xls;*.xlsx)|*.xls;*.xlsx|All files|*.*";

			// 

			// Form1

			// 

			this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);

			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;

			this.ClientSize = new System.Drawing.Size(462, 390);

			this.Controls.Add(this.btnExport);

			this.Controls.Add(this.btnImport);

			this.Controls.Add(this.dataGrid1);

			this.Name = "Form1";

			this.Text = "ImportFromWinFormsDataGrid";

			((System.ComponentModel.ISupportInitialize) (this.dataGrid1)).EndInit();

			this.ResumeLayout(false);



		}



		#endregion



		private System.Windows.Forms.DataGrid dataGrid1;

		private System.Windows.Forms.Button btnImport;

		private System.Windows.Forms.Button btnExport;

		private System.Windows.Forms.OpenFileDialog openFileDialog1;

		private System.Windows.Forms.DataGridTableStyle dataGridTableStyle1;

		private System.Windows.Forms.DataGridTextBoxColumn dataGridTextBoxColumn1;



	}

}

using System;
using System.Windows.Forms;

namespace ImportExportFromWinFormsDataGrid.CSharp
{
    class Program
    {
		[STAThread]
        static void Main(string[] args)
        {
			Application.EnableVisualStyles();
			Application.SetCompatibleTextRenderingDefault(false);
			Application.Run(new Form1());
        }
    }
}