# App Method

## Overloads

| [App(String, SessionToken, Boolean)](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.QcsLocation.App.htm#Qlik_Engine_QcsLocation_App_System_String_Qlik_Engine_SessionToken_System_Boolean_) |  | Connect to a Qlik Sense app.<br><br>This method opens a websocket connection. |
| --- | --- | --- |

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

## App(String, SessionToken, Boolean)

Connect to a Qlik Sense app.

This method opens a websocket connection.

### Declaration

```

          public IApp App(string appId, SessionToken sessionToken = null, bool noData = false)
    
  
```

### Parameters

| Type | Name | Description |
| --- | --- | --- |
| System.String | appId | The ID of the app to open. |
| [SessionToken](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.SessionToken.htm) | sessionToken | Session identification token. A value of `null` is equivalent to `Session.Default()`. |
| System.Boolean | noData | Open the app without data |

### Returns

| Type | Description |
| --- | --- |
| [IApp](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IApp.htm) | IApp |

### Implements

[IQcsLocation.App(String, SessionToken, Boolean)](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IQcsLocation.App.htm#Qlik_Engine_IQcsLocation_App_System_String_Qlik_Engine_SessionToken_System_Boolean_)