## ASP.NET RadioButtonList CellPadding Property
The `CellPadding` property is a member of the ASP.NET `RadioButtonList` control. It is used to define or retrieve the amount of space (in pixels) between the border of a cell and the content inside that cell.
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## Definition and Usage
The `CellPadding` property controls the internal spacing (padding) within each individual item (cell) of a `RadioButtonList` control. By adjusting this property, you can increase or decrease the distance between the radio button selection circle, its associated text label, and the outer boundary of its containing cell.
> **Important Note:** The `CellPadding` property is only effective when the `RepeatLayout` property of the `RadioButtonList` is set to `Table` (which is the default layout). If `RepeatLayout` is set to `Flow`, this property will have no effect on the rendered HTML.
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## Syntax
```xml
```
### Property Values
| Property Value | Description |
| :--- | :--- |
| `pixels` | An integer value specifying the number of pixels of space between the cell border and its contents. |
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## Code Example
The following example demonstrates how to set the `CellPadding` property to `15` pixels on a `RadioButtonList` control to create a spacious layout for the list items.
```xml
<%@ Page Language="C#" %>
RadioButtonList CellPadding Example
```
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## Key Considerations
1. **Layout Dependency:** As mentioned, `CellPadding` relies on HTML `
` rendering. If you are aiming for modern, responsive web designs, you might prefer setting `RepeatLayout="Flow"` or `RepeatLayout="UnorderedList"` and managing the spacing via external CSS (using padding and margin properties on the list elements) rather than relying on the legacy table-based `CellPadding` attribute.
2. **Browser Rendering:** When `RepeatLayout="Table"` is active, ASP.NET renders the control as an HTML ``. The `CellPadding` property is translated directly into the `cellpadding` attribute of the generated `
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