使用 HTTP Header Content-Dispoition 設定附件預設的開啟或下載行為。
說明
public ActionResult PDF()
{
var cd = new System.Net.Mime.ContentDisposition
{
FileName = "PDF_Sample.pdf",
Inline = false,
};
Response.AppendHeader("Content-Disposition", cd.ToString());
return File("~/Files/PDF_Sample.pdf", "Application/pdf");
}預設上不加入 ContentDisposition 會預設使用 Inline 的方式提供 (在新頁籤開啟檔案)，但如果加入 ContentDisposition 而為提供是否 Inline，則預設會使用 Attachment 的方式開啟 (逕執行檔案下載)，而如果使用 Inline = True 則又會恢復為 Inline 的方式 😊
此外 ContentDisposition 的 FileName 不直接影響瀏覽器的呈現方式，但 ContentyType (MIME) 必須正確，
Common ContentType
| Extension | Description | MIME Type |
|---|---|---|
| .avi | AVI: Audio Video Interleave video/ | x-msvideo |
| .bmp | Windows OS/2 Bitmap Graphics | image/bmp |
| .css | Cascading Style Sheets (CSS) | text/css |
| .csv | Comma-separated values (CSV) | text/csv |
| .doc | Microsoft Word | application/msword |
| .docx | Microsoft Word (OpenXML) | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
| .gif | Graphics Interchange Format (GIF) | image/gif |
| .htm, .html | HyperText Markup Language (HTML) | text/html |
| .ico | Icon format image/vnd. | microsoft.icon |
| .jpeg, .jpg | JPEG images | image/jpeg |
| .js | JavaScript text/javascript (Specifications: HTML and RFC | 9239) |
| .json | JSON format | application/json |
| .mjs | JavaScript module | text/javascript |
| .mp3 | MP3 audio | audio/mpeg |
| .mp4 | MP4 video | video/mp4 |
| .mpeg | MPEG Video | video/mpeg |
| .odp | OpenDocument presentation document | application/vnd.oasis.opendocument.presentation |
| .ods | OpenDocument spreadsheet document | application/vnd.oasis.opendocument.spreadsheet |
| .odt | OpenDocument text document | application/vnd.oasis.opendocument.text |
| .png | Portable Network Graphics | image/png |
| Adobe Portable Document Format (PDF) | application/pdf | |
| .ppt | Microsoft PowerPoint | application/vnd.ms-powerpoint |
| .pptx | Microsoft PowerPoint (OpenXML) | application/vnd.openxmlformats-officedocument.presentationml.presentation |
| .rar | RAR archive application/ | vnd.rar |
| .svg | Scalable Vector Graphics (SVG) image/ | svg+xml |
| .txt | Text, (generally ASCII or ISO 8859-n) | text/plain |
| .wav | Waveform Audio Format | audio/wav |
| .webp | WEBP image | image/webp |
| .woff | Web Open Font Format (WOFF) | font/woff |
| .woff2 | Web Open Font Format (WOFF) | font/woff2 |
| .xls | Microsoft Excel | application/vnd.ms-excel |
| .xlsx | Microsoft Excel (OpenXML) | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| .zip | ZIP archive | application/zip |
| .7z | 7-zip archive application/x- | 7z-compressed |