After creating a CSV file how to send it in an email?

Hey guys,
I have a web form that when you submit it, it will export it to a CSV file. It works fine, it lets you open it up or save it onto your machine but what I want it to do is send it as an attachment in an email. How would I do that? Do I need to save the file first onto the server and than it sends the file in an email? Here's my code so far:
protected void btnSubmit_Click(object sender, EventArgs e) { exportToCSV(createDataTable(), "FormSubmission"); } protected void exportToCSV(DataTable data, string fileName) { HttpContext context = HttpContext.Current; context.Response.Clear(); context.Response.ContentType = "text/csv"; context.Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName + ".csv"); //rite column header names for (int i = 0; i < data.Colum ...