# NxDownloadOptions Class

Namespace: [Qlik.Engine](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.htm)  
Assembly: Qlik.Engine.dll

## Inheritance

* System.Object
  * NxDownloadOptions

## Syntax

```
[ValueClass]
public class NxDownloadOptions : INxDownloadOptions
```

## Constructors

| Name | Description |
| --- | --- |
| [NxDownloadOptions()](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.NxDownloadOptions.-ctor.htm#Qlik_Engine_NxDownloadOptions__ctor) |  |

## Properties

| Name | Description |
| --- | --- |
| [BookmarkId](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.NxDownloadOptions.BookmarkId.htm#Qlik_Engine_NxDownloadOptions_BookmarkId) | Bookmark Id to apply before reducing the application.<br><br>JSON property name: qBookmarkId |
| [Expires](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.NxDownloadOptions.Expires.htm#Qlik_Engine_NxDownloadOptions_Expires) | Time in seconds for how long the download link is valid.<br><br>JSON property name: qExpires |
| [ServeOnce](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.NxDownloadOptions.ServeOnce.htm#Qlik_Engine_NxDownloadOptions_ServeOnce) | If the file should be deleted after served once.<br><br>JSON property name: qServeOnce |