asp.net导出csv的例子，很不错(zz from :http://wiki.asp.net/page.aspx/401/export-to-csv-file/)

public static void WriteToCSV(List<Person> personList) { string attachment = "attachment; filename=PersonList.csv"; HttpContext.Current.Response.Clear(); HttpContext.Current.Response.ClearHeaders(); HttpContext.Current.Response.ClearContent(); HttpContext.Current.Response.AddHeader("content-disposition", attachment); HttpContext.Current.Response.ContentType = "text/csv"; HttpContext.Current.Response.AddHeader("Pragma", "public"); WriteColumnName(); foreach (Person person in personList) { WriteUserInfo(person); } HttpContext.Current.Response.End(); } private static void WriteUserInfo(Person person) { StringBuilder stringBuilder = new StringBuilder(); AddComma(person.Name, stringBuilder); AddComma(person.Family, stringBuilder); AddComma(person.Age.ToString(), stringBuilder); AddComma(string.Format("{0:C2}", person.Salary), stringBuilder); HttpContext.Current.Response.Write(stringBuilder.ToString()); HttpContext.Current.Response.Write(Environment.NewLine); } private static void AddComma(string value, StringBuilder stringBuilder) { stringBuilder.Append(value.Replace(',', ' ')); stringBuilder.Append(", "); } private static void WriteColumnName() { string columnNames = "Name, Family, Age, Salary"; HttpContext.Current.Response.Write(columnNames); HttpContext.Current.Response.Write(Environment.NewLine); }

很不错，可以把List改成DataTable