# AppAsync Method

## Overloads

| [AppAsync(ILocation, IAppIdentifier, ISession, Boolean)](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.LocationExtensions.AppAsync.htm#Qlik_Engine_LocationExtensions_AppAsync_Qlik_Engine_ILocation_Qlik_Engine_IAppIdentifier_Qlik_Engine_ISession_System_Boolean_) |  | Connect to a Qlik Sense app.<br>This method opens a websocket connection. |
| --- | --- | --- |
| [AppAsync(ILocation, AsyncHandle, IAppIdentifier, ISession, Boolean)](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.LocationExtensions.AppAsync.htm#Qlik_Engine_LocationExtensions_AppAsync_Qlik_Engine_ILocation_Qlik_Engine_AsyncHandle_Qlik_Engine_IAppIdentifier_Qlik_Engine_ISession_System_Boolean_) |  | Connect to a Qlik Sense app.<br>This method opens a websocket connection. |
| [AppAsync(ILocation, String, ISession, Boolean)](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.LocationExtensions.AppAsync.htm#Qlik_Engine_LocationExtensions_AppAsync_Qlik_Engine_ILocation_System_String_Qlik_Engine_ISession_System_Boolean_) |  | Connect to a Qlik Sense app.<br>This method opens a websocket connection. |
| [AppAsync(ILocation, AsyncHandle, String, ISession, Boolean)](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.LocationExtensions.AppAsync.htm#Qlik_Engine_LocationExtensions_AppAsync_Qlik_Engine_ILocation_Qlik_Engine_AsyncHandle_System_String_Qlik_Engine_ISession_System_Boolean_) |  | Connect to a Qlik Sense app.<br>This method opens a websocket connection. |

[](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.LocationExtensions.AppAsync.htm) [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.LocationExtensions.AppAsync.htm)

## AppAsync(ILocation, IAppIdentifier, ISession, Boolean)

Connect to a Qlik Sense app. This method opens a websocket connection.

### Declaration

```

          public static Task<IApp> AppAsync(this ILocation location, IAppIdentifier appIdentifier, ISession session = null, bool noData = false)
    
  
```

### Parameters

| Type | Name | Description |
| --- | --- | --- |
| [ILocation](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ILocation.htm) | location | Location object of the Qlik Sense instance |
| [IAppIdentifier](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IAppIdentifier.htm) | appIdentifier | Token to identify a unique app |
| [ISession](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ISession.htm) | session | Defines a specific app session, that can be connected to. |
| System.Boolean | noData | Open the app without data |

### Returns

| Type | Description |
| --- | --- |
| System.Threading.Tasks.Task&lt;[IApp](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IApp.htm)&gt; | Returns a task, the result contains the IApp |

[](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.LocationExtensions.AppAsync.htm) [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.LocationExtensions.AppAsync.htm)

## AppAsync(ILocation, AsyncHandle, IAppIdentifier, ISession, Boolean)

Connect to a Qlik Sense app. This method opens a websocket connection.

### Declaration

```

          public static Task<IApp> AppAsync(this ILocation location, AsyncHandle asyncHandle, IAppIdentifier appIdentifier, ISession session = null, bool noData = false)
    
  
```

### Parameters

| Type | Name | Description |
| --- | --- | --- |
| [ILocation](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ILocation.htm) | location | Location object of the Qlik Sense instance |
| [AsyncHandle](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.AsyncHandle.htm) | asyncHandle | Handle to asynchronous method request. |
| [IAppIdentifier](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IAppIdentifier.htm) | appIdentifier | Token to identify a unique app |
| [ISession](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ISession.htm) | session | Defines a specific app session, that can be connected to. |
| System.Boolean | noData | Open the app without data |

### Returns

| Type | Description |
| --- | --- |
| System.Threading.Tasks.Task&lt;[IApp](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IApp.htm)&gt; | Returns a task, the result contains the IApp |

[](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.LocationExtensions.AppAsync.htm) [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.LocationExtensions.AppAsync.htm)

## AppAsync(ILocation, String, ISession, Boolean)

Connect to a Qlik Sense app. This method opens a websocket connection.

### Declaration

```
public static Task<IApp> AppAsync(this ILocation location, string appId, ISession session = null, bool noData = false)
```

### Parameters

| Type | Name | Description |
| --- | --- | --- |
| [ILocation](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ILocation.htm) | location | Location object of the Qlik Sense instance |
| System.String | appId | The ID of the app |
| [ISession](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ISession.htm) | session | Defines a specific app session, that can be connected to. |
| System.Boolean | noData | Open the app without data |

### Returns

| Type | Description |
| --- | --- |
| System.Threading.Tasks.Task&lt;[IApp](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IApp.htm)&gt; | Returns a task, the result contains the IApp |

[](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.LocationExtensions.AppAsync.htm) [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.LocationExtensions.AppAsync.htm)

## AppAsync(ILocation, AsyncHandle, String, ISession, Boolean)

Connect to a Qlik Sense app. This method opens a websocket connection.

### Declaration

```
public static Task<IApp> AppAsync(this ILocation location, AsyncHandle asyncHandle, string appId, ISession session = null, bool noData = false)
```

### Parameters

| Type | Name | Description |
| --- | --- | --- |
| [ILocation](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ILocation.htm) | location | Location object of the Qlik Sense instance |
| [AsyncHandle](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.AsyncHandle.htm) | asyncHandle | Handle to asynchronous method request. |
| System.String | appId | The ID of the app |
| [ISession](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ISession.htm) | session | Defines a specific app session, that can be connected to. |
| System.Boolean | noData | Open the app without data |

### Returns

| Type | Description |
| --- | --- |
| System.Threading.Tasks.Task&lt;[IApp](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IApp.htm)&gt; | Returns a task, the result contains the IApp |