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Page.Theme Property

Updated: February 2010

Gets or sets the name of the page theme.

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

public virtual string Theme { get; set; }
<asp:Page Theme="String" />

Property Value

Type: System.String
The name of the page theme.


An attempt was made to set Theme after the PreInit event has occurred.


Theme is set to an invalid theme name.

The Theme property sets the name of the theme used for the page. If you want the settings on the page to take precedence over the settings in the theme, use the StyleSheetTheme property. For more information, see ASP.NET Themes and Skins Overview.

The Theme property must be set prior to the PreInit event; setting the Theme property after the PreInit event will cause an InvalidOperationException exception.

The specified theme must exist as either an application or a global theme. If the theme does not exist, an HttpException exception s thrown.

How to: Apply ASP.NET Themes ProgrammaticallyBuilding ASP .NET Web Applications
How to: Apply ASP.NET Themes ProgrammaticallyBuilding ASP .NET Web Applications

The following code example sets the Theme property to a name passed in the query string.

void Page_PreInit(object sender, EventArgs e)
  // Get the theme name from a QueryString variable
  string ThemeName;
  ThemeName = Request.QueryString["thename"];
  if (ThemeName != null)
    Page.Theme = ThemeName;

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0




February 2010

Described the difference between the StyleSheetTheme and Theme properties.

Customer feedback.