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WebControl.BorderWidth Property

Gets or sets the border width of the Web server control.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

abstract BorderWidth : Unit with get, set
override BorderWidth : Unit with get, set
<asp:WebControl BorderWidth="Unit" />

Property Value

Type: System.Web.UI.WebControls.Unit
A Unit that represents the border width of a Web server control. The default value is Empty, which indicates that this property is not set.


The specified border width is a negative value.

Use the BorderWidth property to specify a border width for a control.


This property does not work with all Web server controls. It applies only to controls that display as a table, such as Table and DataGrid.

This property is set with a Unit object. If the Value property of the Unit contains a negative number, an exception is thrown.


The border width can be expressed only in pixels for browsers earlier than Microsoft Internet Explorer version 5. All unit types are supported in Microsoft Internet Explorer version 5 and later. Refer to the specific control for details.

The following example illustrates how to set the BorderWidth property of the Table control, inherited from the WebControl base class.

No code example is currently available or this language may not be supported.

The following code sample uses the single-file code model and may not work correctly if copied directly into a code-behind file. This code sample must be copied into an empty text file that has an .aspx extension. For more information on the Web Forms code model, see ASP.NET Web Page Code Model.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.