# IQcsLocation Interface

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

Interface for handling connections to Qlik Cloud Services.

## Syntax

```
public interface IQcsLocation : IQcsLocation, IGenericLocation
```

## Methods

| Name | Description |
| --- | --- |
| [App(String, SessionToken, Boolean)](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IQcsLocation.App.htm#Qlik_Engine_IQcsLocation_App_System_String_Qlik_Engine_SessionToken_System_Boolean_) | Connect to a Qlik Sense app.<br><br>This method opens a websocket connection. |
| [AppAsync(AsyncHandle, String, SessionToken, Boolean)](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IQcsLocation.AppAsync.htm#Qlik_Engine_IQcsLocation_AppAsync_Qlik_Engine_AsyncHandle_System_String_Qlik_Engine_SessionToken_System_Boolean_) | Connect to a Qlik Sense app.<br><br>This method opens a websocket connection. |
| [AppAsync(AsyncHandle, String, Action<IHub>, SessionToken, Boolean)](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IQcsLocation.AppAsync.htm#Qlik_Engine_IQcsLocation_AppAsync_Qlik_Engine_AsyncHandle_System_String_System_Action_Qlik_Engine_IHub__Qlik_Engine_SessionToken_System_Boolean_) | Connect to a Qlik Sense app. The `onConnectionEstablished` callback can be used to access an `IHub` instance while the app is being opened.<br><br>This method opens a websocket connection. |
| [AppAsync(String, SessionToken, Boolean)](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IQcsLocation.AppAsync.htm#Qlik_Engine_IQcsLocation_AppAsync_System_String_Qlik_Engine_SessionToken_System_Boolean_) | Connect to a Qlik Sense app.<br><br>This method opens a websocket connection. |
| [SessionApp()](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IQcsLocation.SessionApp.htm#Qlik_Engine_IQcsLocation_SessionApp) | Create and connect to a session app.<br><br>This method opens a websocket connection. |
| [SessionAppAsync()](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IQcsLocation.SessionAppAsync.htm#Qlik_Engine_IQcsLocation_SessionAppAsync) | Create and connect to a session app.<br><br>This method opens a websocket connection. |
| [SessionAppFromApp(String)](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IQcsLocation.SessionAppFromApp.htm#Qlik_Engine_IQcsLocation_SessionAppFromApp_System_String_) | Create and connect to a session app.<br><br>This method opens a websocket connection. |
| [SessionAppFromAppAsync(String)](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IQcsLocation.SessionAppFromAppAsync.htm#Qlik_Engine_IQcsLocation_SessionAppFromAppAsync_System_String_) | Create and connect to a session app.<br><br>This method opens a websocket connection. |