WebBrowser.InvokeScript Method (String)
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Executes the specified script, which is defined in the currently loaded HTML.
Namespace: System.Windows.Controls
Assembly: System.Windows (in System.Windows.dll)
Syntax
'Declaration
Public Function InvokeScript ( _
scriptName As String _
) As Object
public Object InvokeScript(
string scriptName
)
Parameters
- scriptName
Type: System.String
The name of the script to execute.
Return Value
Type: System.Object
The result of the script invocation.
Remarks
If the call to InvokeScript loads cross-domain content, you can no longer interact with that content with InvokeScript. For security reasons, you cannot call this method on script targets hosted inside an <iframe>.
Examples
In the following example, InvokeScript is called, which in turn calls the LoadSearch function in the following HTML. The HTML file must be hosted in the same domain as the Silverlight application.
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title></title>
<script type="text/javascript" >
function LoadSearch(searchString) {
window.location = "https://www.bing.com/search?q=" + searchString
window.external.notify("Search completed")
}
</script>
</head>
<body>
Silverlight WebBrowser control.
</body>
</html>
Partial Public Class MainPage
Inherits UserControl
Public Sub New()
InitializeComponent()
End Sub
Private Sub WB1_ScriptNotify(ByVal sender As Object, ByVal e As NotifyEventArgs)
Button1.Content = e.Value
Button1.IsEnabled = False
End Sub
Private Sub Button1_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
Dim results As Object = WB1.InvokeScript("LoadSearch", New String() {"Silverlight"})
End Sub
End Class
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
}
void WB1_ScriptNotify(object sender, NotifyEventArgs e)
{
Button1.Content = e.Value;
Button1.IsEnabled = false;
}
private void Button1_Click(object sender, RoutedEventArgs e)
{
object results = WB1.InvokeScript("LoadSearch", new string[] { "Silverlight" });
}
}
<StackPanel x:Name="LayoutRoot" Height="358" Width="489" Background="LightBlue">
<WebBrowser x:Name="WB1" Source="https://localhost/HTMLPage1.htm" Height="272" Width="379"
ScriptNotify="WB1_ScriptNotify" Margin="5" />
<Button Width="200" x:Name="Button1" Content="Click to search!" Click="Button1_Click" />
</StackPanel>
Version Information
Silverlight
Supported in: 5, 4
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.