SilverlightHost.IsVersionSupported Method


Returns a value that indicates whether the installed Silverlight plug-in supports the specified version.

Namespace:  System.Windows.Interop
Assembly:  System.Windows (in System.Windows.dll)

public bool IsVersionSupported(
	string versionStr


Type: System.String
The version to check, in the form of See Remarks for more information about the string form.

Return Value

Type: System.Boolean
true if the version can be supported by the installation; otherwise, false.

The version string contains one through four integer values that are separated by dots, for example, "2.0.30908.0". The sequence of integers represents the major, minor, build, and revision numbers. For more information about versioning, see Silverlight Plug-in Versioning.

This method parallels the JavaScript function isInstalled, which is defined in the Silverlight.js helper file. You can use both methods to implement a plug-in upgrade experience. However, the JavaScript function enables you to do this before the installed plug-in version is loaded. For more information, see Silverlight.js Reference.

The following code example demonstrates how to use this method.

// The Host object, which represents the host Silverlight plug-in.
System.Windows.Interop.SilverlightHost host = 

// The following code demonstrates how to use the Host object
// to access other APIs in the System.Windows.Interop namespace.

// The IsVersionSupported method. This method is useful when
// you want to implement an upgrade experience in managed code.
bool isSupported = host.IsVersionSupported("2.0.30908.0");

// Read-only properties of the Host object.
System.Windows.Media.Color pluginBackground = host.Background;
bool loaded = host.IsLoaded;
Uri source = host.Source;

// The Settings object, which represents Web browser settings.
System.Windows.Interop.Settings settings = host.Settings;

// Read/write properties of the Settings object.
settings.EnableFrameRateCounter = true;
settings.EnableRedrawRegions = true;
settings.MaxFrameRate = 60;

// Read-only properties of the Settings object.
bool windowless = settings.Windowless;
bool htmlAccessEnabled = settings.EnableHTMLAccess;

// The Content object, which represents the plug-in display area.
System.Windows.Interop.Content content = host.Content;

// The read/write IsFullScreen property of the Content object.
// See also the Content.FullScreenChanged event.
bool isFullScreen = content.IsFullScreen;

// Read-only properties of the Content object. These properties do 
// not contain meaningful values until after the Content.Resized 
// event occurs for the first time. 
double actualWidth = content.ActualWidth;
double actualHeight = content.ActualHeight;


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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