MainWindow.xaml.vb

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#End Region

Imports System.ComponentModel
Imports System.Threading.Tasks
Imports DotNetBrowser.Browser
Imports DotNetBrowser.Engine

''' <summary>
'''     This example demonstrates how to find text on the loaded web page.
''' </summary>
Partial Public Class MainWindow
    Inherits Window

    Private browser As IBrowser
    Private engine As IEngine

    Public Sub New()
        EngineFactory.CreateAsync(New EngineOptions.Builder With {
                                     .RenderingMode = RenderingMode.OffScreen
                                     }.Build()) _
        .ContinueWith(Sub(t)
            engine = t.Result
            browser = engine.CreateBrowser()
            browserView.InitializeFrom(browser)

            browser.Navigation.LoadUrl("https://teamdev.com/dotnetbrowser")
        End Sub, TaskScheduler.FromCurrentSynchronizationContext())

        InitializeComponent()
    End Sub

    Private Sub clearButton_Click(sender As Object, e As RoutedEventArgs)
        browser.TextFinder.StopFinding()
        textBox.Text = ""
    End Sub

    Private Sub findButton_Click(sender As Object, e As RoutedEventArgs)
        If textBox.Text <> String.Empty Then
            browser.TextFinder.Find(textBox.Text).ContinueWith(Sub(t)
                If t.Result.NumberOfMatches = 0 Then
                    MessageBox.Show("No matches!")
                End If
            End Sub, TaskScheduler.FromCurrentSynchronizationContext())
        End If
    End Sub

    Private Sub Window_Closing(sender As Object, e As CancelEventArgs)
        browser.Dispose()
        engine.Dispose()
    End Sub

End Class