need web application code of c#.net

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using ExcelFile;

using System.Windows.Forms;

using System.Collections;

using System.Data.OleDb;

namespace ExcelFile

public partial class Form1 : Form

private Microsoft.Office.Interop.Excel.Application ExcelObj = null;

public Form1()

ExcelObj = new Microsoft.Office.Interop.Excel.Application();

// See if the Excel Application Object was successfully constructed

if (ExcelObj == null)

MessageBox.Show("ERROR: EXCEL couldn't be started!");

System.Windows.Forms.Application.Exit();

private void button1_Click(object sender, EventArgs e)

string strSheets = "";

string strCols = "";

if (this.openFileDialog1.ShowDialog() == DialogResult.OK)

Microsoft.Office.Interop.Excel.Workbook theWorkBook = ExcelObj.Workbooks.Open(this.openFileDialog1.FileName, 0, true, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, false, false);

Microsoft.Office.Interop.Excel.Sheets sheets = theWorkBook.Worksheets;

for (int i = 1; i <= sheets.Count; i++)

Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)sheets.get_Item(i);

string cn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + this.openFileDialog1.FileName + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\"";

OleDbConnection cnn = new OleDbConnection(cn);

OleDbDataAdapter da;

da = new OleDbDataAdapter("Select * from [" + worksheet.Name + "$]", cnn);

DataTable dt = new DataTable();

foreach (DataColumn dc in dt.Columns)

if (dc.ColumnName.ToLower() != "f1") // if there are no columns in the sheet default it gets the column name as F1

if (strCols == "")

strCols = worksheet.Name + "." + dc.ColumnName;

else

strCols = strCols + "," + worksheet.Name + "." + dc.ColumnName;

strCols = strCols + "-----";

if (strSheets == "")

else

strSheets = strSheets + "," + worksheet.Name;