exporting sql statement to excel in c#

a sample of an export from c# using a sql statement to excel


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Excel = Microsoft.Office.Interop.Excel;
using System.Data.SqlClient;




namespace WindowsFormsApplication6
{
public partial class excelout : Form
{
public excelout()
{
InitializeComponent();
}

private void excelout_Load(object sender, EventArgs e)
{

}

private void button1_Click(object sender, EventArgs e)
{
SqlConnection cnn;
string connectionString = null;
string sql = null;
string data = null;
int i = 0;
int j = 0;

Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
object misValue = System.Reflection.Missing.Value;

xlApp = new Excel.ApplicationClass();
xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

connectionString = "data source=192.168.20.3;initial catalog=hct;user id=ted;password=ted;";
cnn = new SqlConnection(connectionString);
cnn.Open();
sql = "SELECT * FROM Product1";
SqlDataAdapter dscmd = new SqlDataAdapter(sql, cnn);
DataSet ds = new DataSet();
dscmd.Fill(ds);

for (i = 0; i <= ds.Tables[0].Rows.Count - 1; i++)
{
for (j = 0; j <= ds.Tables[0].Columns.Count - 1; j++)
{
data = ds.Tables[0].Rows[i].ItemArray[j].ToString();
xlWorkSheet.Cells[i + 1, j + 1] = data;
}
}

xlWorkBook.SaveAs("C:\\ted.xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
xlWorkBook.Close(true, misValue, misValue);
xlApp.Quit();

releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);

MessageBox.Show("Excel file created , you can find the file c:\\ted.xls");


}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Exception Occured while releasing object " + ex.ToString());
}
finally
{
GC.Collect();
}

}

}
}