# UiPath.Studio.Api.Controls

> UiPath.Studio.Api.Controls and UiPath.Studio.Api.Controls.Base namespaces for defining UI controls and container layouts for settings in Studio activity packages.

In this section you can find more information on how to build activities using **UiPath.Studio.Api.Controls**.

## UiPath.Studio.Api.Controls.Base

In this section you can find more information on how to build activities using **UiPath.Studio.Api.Controls.Base**.

### ControlDescriptionBase

The control to use for this setting.

#### Properties

| Type | Name | Description |
| --- | --- | --- |
| string | Tooltip | (*Optional*) The tooltip to display for this control. |
| string | Text | (*Optional*) The text to display for this control. |

### ControlsContainerDescription

The control to use as a container for other controls in this setting.

#### Inheritance

[ControlDescriptionBase](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#controldescriptionbase) > ControlsContainerDescription

#### Properties

| Type | Name | Description |
| --- | --- | --- |
| IList<ControlDescriptionBase | Controls | A collection of controls. |

#### Remarks

We recommend using [StackPanelDescription](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#stackpaneldescription) as it offers a way to arrange controls.

### EditorDescriptionBase <T>

A text input control.

#### Inheritance

[ControlDescriptionBase](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#controldescriptionbase) > [InputControlDescriptionBase <T>](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#inputcontroldescriptionbase-%26lt%3Bt%26gt%3B) > EditorDescriptionBase<T>

#### Properties

| Type | Name | Description |
| --- | --- | --- |
| string | ValueHint | The value hint if there is no value. |
| Func<T, string> | Validate | Returns a validation error or an empty string if there is no error. |

### InputControlDescriptionBase <T>

Base class for control that allow selecting / editing a value.

#### Inheritance

[ControlDescriptionBase](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#controldescriptionbase) > InputControlDescriptionBase<T>

#### Properties

| Type | Name | Description |
| --- | --- | --- |
| T | DefaultValue | The default value. |
| bool | IsReadOnly | If set to `true`, input is disabled (the control is read-only). |
| Func<T, string> | GetDisplayValue | The formatted text for the given value. |

### ItemsControlDescriptionBase <T>

Base class for item controls, for example combo box.

#### Inheritance

[ControlDescriptionBase](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#controldescriptionbase) > [InputControlDescriptionBase <T>](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#inputcontroldescriptionbase-%26lt%3Bt%26gt%3B) > ItemsControlDescriptionBase<T>

#### Generic Type T

A type that is supported by ControlDescriptionBase.

#### Properties

| Type | Name | Description |
| --- | --- | --- |
| List<T> | Items | The possible values. |

## CheckBoxDescription

A check box.

### Inheritance

[ControlDescriptionBase](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#controldescriptionbase) > [InputControlDescriptionBase <T>](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#inputcontroldescriptionbase-%26lt%3Bt%26gt%3B) > CheckBoxDescription

## ComboBoxDescription

A select-only combo box.

### Inheritance

[ControlDescriptionBase](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#controldescriptionbase) > [InputControlDescriptionBase <T>](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#inputcontroldescriptionbase-%26lt%3Bt%26gt%3B) > ComboBoxDescription

### Properties

| Type | Name | Description |
| --- | --- | --- |
| bool | AllowMultipleSelection | If set to `true`, each item will have an associated check box. |

### Remarks

Adds a dropdown in activities project settings.

![docs image](https://dev-assets.cms.uipath.com/assets/images/sdk/sdk-docs-image-105748-d36dad20-3b0802b1.webp)

## NumericBoxDescription <T>

A numeric input control.

### Inheritance

[ControlDescriptionBase](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#controldescriptionbase) > [InputControlDescriptionBase <T>](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#inputcontroldescriptionbase-%26lt%3Bt%26gt%3B) > [EditorDescriptionBase <T>](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#editordescriptionbase-%26lt%3Bt%26gt%3B) > NumericBoxDescription

### Generic Type T

The type of data that this numeric box displays. It must implement IComparable, IFormattable, IConvertible, IComparable<T>, IEquatable<T> and must be a struct.

### Properties

| Type | Name | Description |
| --- | --- | --- |
| T | MaxValue | (*Optional*) The higher bound value. |
| T | MinValue | (*Optional*) The lower bound value. |
| T | StepSize | (*Optional*) If set, an up/down control is displayed that increments/decrements using the given value. |

### Remarks

Adds a numeric box to activity project settings.

![docs image](https://dev-assets.cms.uipath.com/assets/images/sdk/sdk-docs-image-105632-f5ce787d-9da2a031.webp)

## RadioButtonGroupDescription

Radio button group generated from a list of string values.

### Inheritance

[ControlDescriptionBase](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#controldescriptionbase) > [InputControlDescriptionBase <T>](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#inputcontroldescriptionbase-%26lt%3Bt%26gt%3B) > > RadioButtonGroupDescription

### Remarks

Adds a radio button control to activity project settings.

Use InputControlDescriptionBase{T}.GetDisplayValue to provide the localized display value.

![docs image](https://dev-assets.cms.uipath.com/assets/images/sdk/sdk-docs-image-105276-13616ae1-d24488d0.webp)

## StackPanelDescription

A list of controls arranged on a single line.

### Inheritance

[ControlDescriptionBase](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#controldescriptionbase) > [ControlsContainerDescription](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#controlscontainerdescription) > StackPanelDescription

### Remarks

Adds a panel to activities project settings that arranges its child elements in a single line.

![docs image](https://dev-assets.cms.uipath.com/assets/images/sdk/sdk-docs-image-105700-24a5a782-df64f607.webp)

## TextBoxDescription

A text box control.

### Inheritance

[ControlDescriptionBase](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#controldescriptionbase) > [InputControlDescriptionBase <T>](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#inputcontroldescriptionbase-%26lt%3Bt%26gt%3B) > [EditorDescriptionBase <T>](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#editordescriptionbase-%26lt%3Bt%26gt%3B) > TextBoxDescription

### Properties

| Type | Name | Description |
| --- | --- | --- |
| bool | IsMultiLine | If set to `true`, the text box expands vertically |

### Remarks

Adds a text box control in activities project settings.

![](https://dev-assets.cms.uipath.com/assets/images/sdk/sdk-image-105312-9d7dc1fa-b6d66f5f.webp)

## ToggleDescription

A toggle button.

### Inheritance

[ControlDescriptionBase](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#controldescriptionbase) > [InputControlDescriptionBase <T>](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioapicontrols#inputcontroldescriptionbase-%26lt%3Bt%26gt%3B) > ToggleDescription

### Properties

| Type | Name | Description |
| --- | --- | --- |
| bool | IsMultiLine | If set to `true`, the text box expands vertically |