# TreeDataDef Constructor

## Overloads

| [TreeDataDef()](https://help.qlik.com/en-US/sense-developer/May2025/Subsystems/NetSDKAPIref/Content/Qlik.Engine.TreeDataDef.-ctor.htm#Qlik_Engine_TreeDataDef__ctor) |  | Creates an instance of the TreeDataDef class |
| --- | --- | --- |

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

## TreeDataDef()

Creates an instance of the TreeDataDef class

### Declaration

```

          public TreeDataDef()
    
  
```