# AppIdentifier Constructor

## Overloads

| [AppIdentifier()](https://help.qlik.com/en-US/sense-developer/November2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.AppIdentifier.-ctor.htm#Qlik_Engine_AppIdentifier__ctor) |  | Default constructor |
| --- | --- | --- |
| [AppIdentifier(String)](https://help.qlik.com/en-US/sense-developer/November2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.AppIdentifier.-ctor.htm#Qlik_Engine_AppIdentifier__ctor_System_String_) |  | Create AppIdentifier instance with only AppId property set. |

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

## AppIdentifier()

Default constructor

### Declaration

```

          public AppIdentifier()
    
  
```

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

## AppIdentifier(String)

Create AppIdentifier instance with only AppId property set.

### Declaration

```

          public AppIdentifier(string appId)
    
  
```

### Parameters

| Type | Name | Description |
| --- | --- | --- |
| System.String | appId |  |