Evaluates a string that contains arbitrary JavaScript code.
(in System.Windows.Browser.dll)
Visual Basic (Declaration)
Public Function Eval ( _
code As String _
) As Object
Dim instance As HtmlWindow
Dim code As String
Dim returnValue As Object
returnValue = instance.Eval(code)
public Object Eval(
string code
)
Return Value
Type:
System..::.ObjectThe results of the JavaScript engine's evaluation of the string in the code parameter.
The Eval method passes the specified code to the browser's JavaScript engine to parse and execute. If a return value is created as a result, it is marshaled back to managed code by using the heuristics described in Passing JavaScript Objects to Managed Code. The return value follows the same restrictions and conventions as the ScriptObject..::.Invoke method.
The Firefox and Safari browsers do not propagate errors that occur as a result of calling the Eval method. If you require error information in Firefox or Safari, you should include custom error handling in the code parameter. For example, the following code example permits error information to be marshaled back to managed code.
HtmlPage.Window.Eval("try { //do some work here }
catch (e) { e.message ? e.message : e; }"
);
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.
Reference