> ## Documentation Index
> Fetch the complete documentation index at: https://cdktn.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.
# CSharp: TerraformSelf
> CDKTN Core API Reference for TerraformSelf in CSharp.
Expressions in connection blocks cannot refer to their parent resource by name.
References create dependencies, and referring to a resource by name within its own block would create a dependency cycle.
Instead, expressions can use the self object, which represents the connection's parent resource and has all of that resource's attributes.
For example, use self.public\_ip to reference an aws\_instance's public\_ip attribute.
## Initializers
```csharp theme={null}
using Io.Cdktn;
new TerraformSelf();
```
| **Name** | **Type** | **Description** |
| -------- | -------- | --------------- |
***
## Static Functions
| **Name** | **Description** |
| ------------------------------------------------------------------- | ----------------------------------------------------------------------------------- |
| GetAny | Only usable within a connection block to reference the connections parent resource. |
| GetNumber | Only usable within a connection block to reference the connections parent resource. |
| GetString | Only usable within a connection block to reference the connections parent resource. |
***
### `GetAny`
```csharp theme={null}
using Io.Cdktn;
TerraformSelf.GetAny(string Key);
```
Only usable within a connection block to reference the connections parent resource.
Access a property on the resource like this: `getAny("hostPort")`
#### `Key`Required
* *Type:* string
***
### `GetNumber`
```csharp theme={null}
using Io.Cdktn;
TerraformSelf.GetNumber(string Key);
```
Only usable within a connection block to reference the connections parent resource.
Access a property on the resource like this: `getNumber("hostPort")`
#### `Key`Required
* *Type:* string
***
### `GetString`
```csharp theme={null}
using Io.Cdktn;
TerraformSelf.GetString(string Key);
```
Only usable within a connection block to reference the connections parent resource.
Access a property on the resource like this: `getString("publicIp")`
#### `Key`Required
* *Type:* string
***