From http://www.w3schools.com (Copyright Refsnes Data)

ASP.NET CellSpacing Property

Table Control Reference Complete Table Control Reference

Definition and Usage

The CellSpacing property is used to get or set the amount of space (in pixels) between the cells in a table.

Note: This property does not work in FireFox.

Syntax

<asp:Table CellSpacing="px" runat="server">
Some Content
</asp:Table>
 
Attribute Description
px Specifies how many pixels of space there is between the cells

Example

The following example sets the CellSpacing property of the Table control:

<form runat="server">
<asp:Table id="tab1" runat="server"
CellSpacing="20">
<asp:TableRow>
<asp:TableCell>
Hello!
</asp:TableCell>
</asp:TableRow>
</asp:Table>
</form>

Show example »
Table Control Reference Complete Table Control Reference

From http://www.w3schools.com (Copyright Refsnes Data)