Create Zip File From Csv File

any other way to create csv file and then zip that csv file? my .csv generated code is.....

if (RadioButtonList1.SelectedItem.Text == "CSV")
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=DataTable.csv");
Response.Charset = "";
Response.ContentType = "application/text";
StringBuilder sb = new StringBuilder();
for (int k = 0; k < dtTemp.Columns.Count; k++)
{
sb.Append(dtTemp.Columns[k].ColumnName + ',');
}
sb.Append("
");
for (int i = 0; i < dtTemp.Rows.Count; i++)
{
for (int k = 0; k < dtTemp.Columns.Count; k++)
{
sb.Append(dtTemp.Rows[i][k].ToString().Replace(",", ";") + ',');
}
sb.Append("
");
}
Response.Output.Write(sb.ToString());
Response.Flush();
Response.End();