## ASP.NET CheckBoxList CellSpacing Property
The `CellSpacing` property is a member of the `CheckBoxList` control in ASP.NET. It is used to get or set the amount of space (in pixels) between individual cells in the rendered table layout.
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## Definition and Usage
The `CellSpacing` property defines the spacing between the cells of the `CheckBoxList` control.
> **Note:** This property is only applicable and effective when the `RepeatLayout` property of the `CheckBoxList` is set to `Table` (which is the default layout mode). If `RepeatLayout` is set to `Flow`, `Ul`, or `Ol`, this property will have no visual effect.
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## Syntax
```xml
```
### Property Values
| Value | Description |
| :--- | :--- |
| `pixels` | An integer value specifying the distance (in pixels) between table cells. |
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## Code Example
The following example demonstrates how to set the `CellSpacing` property of an ASP.NET `CheckBoxList` control to `15` pixels to create visible separation between the checkbox items.
```xml
<%@ Page Language="C#" %>
CheckBoxList CellSpacing Example
```
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## Key Considerations
1. **Layout Dependency:** Always ensure that `RepeatLayout="Table"` (default) is active when using `CellSpacing`. In modern web development, if you prefer semantic HTML (like `
` or `` tags) over tables, you should manage spacing using CSS (`margin` or `gap` properties) instead of `CellSpacing`.
2. **Difference between CellSpacing and CellPadding:**
* `CellSpacing` controls the space **between** adjacent cells.
* `CellPadding` controls the space **inside** a cell (between the cell border and the checkbox/text content).
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