// Create the CSV file to which dataTable will be exported.
	StreamWriter sw = new StreamWriter(Server.MapPath("~/Data.csv"), false);
	// First we will write the headers.
	DataTable dt = {Get Data From Database};
	int iColCount = dt.Columns.Count;
	for(int i = 0; i < iColCount; i++)
	{
		sw.Write(dt.Columns[i]);
		if (i < iColCount - 1)
		{
			sw.Write(",");
		}
	}
	sw.Write(sw.NewLine);
	// Now write all the rows.
	foreach (DataRow dr in dt.Rows)
	{
		for (int i = 0; i < iColCount; i++)
		{
			if (!Convert.IsDBNull(dr[i]))
			{
				sw.Write(dr[i].ToString());
			}
			if ( i < iColCount - 1)
			{
				sw.Write(",");
			}
		}
		sw.Write(sw.NewLine);
	}
	sw.Close();