ASP.NET Download File

底下說明如何提供檔案給使用者下載(不必提供URL給使用者點選)

程式碼如下：

protected void Button1_Click(object sender, EventArgs e)
{
  string fileName = @"c:\FAXTEST.doc";
  Response.Clear();
  //指定下載的檔名
  Response.AddHeader("content-disposition", "attachment;filename=test.doc");
  Response.ContentType = @"application/octet-stream";
  System.IO.FileStream downloadFile = 
      new System.IO.FileStream(fileName, System.IO.FileMode.Open);
  downloadFile.Close();
  Response.WriteFile(fileName);
  Response.Flush();
  Response.End();
}