> ## 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: TerraformVariable > CDKTN Core API Reference for TerraformVariable in CSharp. * *Implements:* ITerraformAddressable ## Initializers ```csharp theme={null} using Io.Cdktn; new TerraformVariable(Construct Scope, string Id, TerraformVariableConfig Config); ``` | **Name** | **Type** | **Description** | | --------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------- | ----------------- | | Scope | Constructs.Construct | *No description.* | | Id | string | *No description.* | | Config | TerraformVariableConfig | *No description.* | *** ### `Scope`^Required * *Type:* Constructs.Construct *** ### `Id`^Required * *Type:* string *** ### `Config`^Required * *Type:* TerraformVariableConfig *** ## Methods | **Name** | **Description** | | --------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------- | | ToString | Returns a string representation of this construct. | | With | Applies one or more mixins to this construct. | | AddOverride | *No description.* | | OverrideLogicalId | Overrides the auto-generated logical ID with a specific ID. | | ResetOverrideLogicalId | Resets a previously passed logical Id to use the auto-generated logical id again. | | ToHclTerraform | *No description.* | | ToMetadata | *No description.* | | ToTerraform | *No description.* | | AddValidation | *No description.* | | SynthesizeAttributes | *No description.* | | SynthesizeHclAttributes | *No description.* | *** ### `ToString` ```csharp theme={null} private string ToString() ``` Returns a string representation of this construct. ### `With` ```csharp theme={null} private IConstruct With(params IMixin[] Mixins) ``` Applies one or more mixins to this construct. Mixins are applied in order. The list of constructs is captured at the start of the call, so constructs added by a mixin will not be visited. Use multiple `with()` calls if subsequent mixins should apply to added constructs. #### `Mixins`^Required * *Type:* params Constructs.IMixin\[] The mixins to apply. *** ### `AddOverride` ```csharp theme={null} private void AddOverride(string Path, object Value) ``` #### `Path`^Required * *Type:* string *** #### `Value`^Required * *Type:* object *** ### `OverrideLogicalId` ```csharp theme={null} private void OverrideLogicalId(string NewLogicalId) ``` Overrides the auto-generated logical ID with a specific ID. #### `NewLogicalId`^Required * *Type:* string The new logical ID to use for this stack element. *** ### `ResetOverrideLogicalId` ```csharp theme={null} private void ResetOverrideLogicalId() ``` Resets a previously passed logical Id to use the auto-generated logical id again. ### `ToHclTerraform` ```csharp theme={null} private object ToHclTerraform() ``` ### `ToMetadata` ```csharp theme={null} private object ToMetadata() ``` ### `ToTerraform` ```csharp theme={null} private object ToTerraform() ``` ### `AddValidation` ```csharp theme={null} private void AddValidation(TerraformVariableValidationConfig Validation) ``` #### `Validation`^Required * *Type:* TerraformVariableValidationConfig *** ### `SynthesizeAttributes` ```csharp theme={null} private System.Collections.Generic.IDictionary SynthesizeAttributes() ``` ### `SynthesizeHclAttributes` ```csharp theme={null} private System.Collections.Generic.IDictionary SynthesizeHclAttributes() ``` ## Static Functions | **Name** | **Description** | | ----------------------------------------------------------------------------------------- | ----------------------------- | | IsConstruct | Checks if `x` is a construct. | | IsTerraformElement | *No description.* | *** ### `IsConstruct` ```csharp theme={null} using Io.Cdktn; TerraformVariable.IsConstruct(object X); ``` Checks if `x` is a construct. Use this method instead of `instanceof` to properly detect `Construct` instances, even when the construct library is symlinked. Explanation: in JavaScript, multiple copies of the `constructs` library on disk are seen as independent, completely different libraries. As a consequence, the class `Construct` in each copy of the `constructs` library is seen as a different class, and an instance of one class will not test as `instanceof` the other class. `npm install` will not create installations like this, but users may manually symlink construct libraries together or use a monorepo tool: in those cases, multiple copies of the `constructs` library can be accidentally installed, and `instanceof` will behave unpredictably. It is safest to avoid using `instanceof`, and using this type-testing method instead. #### `X`^Required * *Type:* object Any object. *** ### `IsTerraformElement` ```csharp theme={null} using Io.Cdktn; TerraformVariable.IsTerraformElement(object X); ``` #### `X`^Required * *Type:* object *** ## Properties | **Name** | **Type** | **Description** | | ---------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------- | ----------------- | | Node | Constructs.Node | The tree node. | | CdktfStack | TerraformStack | *No description.* | | Fqn | string | *No description.* | | FriendlyUniqueId | string | *No description.* | | BooleanValue | IResolvable | *No description.* | | ListValue | string\[] | *No description.* | | NumberValue | double | *No description.* | | StringValue | string | *No description.* | | Value | object | *No description.* | | Default | object | *No description.* | | Description | string | *No description.* | | Nullable | bool | *No description.* | | Sensitive | bool | *No description.* | | Type | string | *No description.* | | Validation | TerraformVariableValidationConfig\[] | *No description.* | *** ### `Node`^Required ```csharp theme={null} public Node Node { get; } ``` * *Type:* Constructs.Node The tree node. *** ### `CdktfStack`^Required ```csharp theme={null} public TerraformStack CdktfStack { get; } ``` * *Type:* TerraformStack *** ### `Fqn`^Required ```csharp theme={null} public string Fqn { get; } ``` * *Type:* string *** ### `FriendlyUniqueId`^Required ```csharp theme={null} public string FriendlyUniqueId { get; } ``` * *Type:* string *** ### `BooleanValue`^Required ```csharp theme={null} public IResolvable BooleanValue { get; } ``` * *Type:* IResolvable *** ### `ListValue`^Required ```csharp theme={null} public string[] ListValue { get; } ``` * *Type:* string\[] *** ### `NumberValue`^Required ```csharp theme={null} public double NumberValue { get; } ``` * *Type:* double *** ### `StringValue`^Required ```csharp theme={null} public string StringValue { get; } ``` * *Type:* string *** ### `Value`^Required ```csharp theme={null} public object Value { get; } ``` * *Type:* object *** ### `Default`^Optional ```csharp theme={null} public object Default { get; } ``` * *Type:* object *** ### `Description`^Optional ```csharp theme={null} public string Description { get; } ``` * *Type:* string *** ### `Nullable`^Optional ```csharp theme={null} public bool Nullable { get; } ``` * *Type:* bool *** ### `Sensitive`^Optional ```csharp theme={null} public bool Sensitive { get; } ``` * *Type:* bool *** ### `Type`^Optional ```csharp theme={null} public string Type { get; } ``` * *Type:* string *** ### `Validation`^Optional ```csharp theme={null} public TerraformVariableValidationConfig[] Validation { get; } ``` * *Type:* TerraformVariableValidationConfig\[] ***