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Rank: Member
Groups: Member
Joined: 12/10/2015
Posts: 17
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WebView1.JSDialog triggers two events for example
Code: Visual Basic.NET
Private Sub WebView1_JSDialog(sender As Object, e As EO.WebBrowser.JSDialogEventArgs) Handles WebView1.JSDialog
If e.DialogType = EO.WebBrowser.JSDialogType.Alert Then
MessageBox.Show(e.MessageText, e.OriginUrl, MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
e.Cancel()
ElseIf e.DialogType = EO.WebBrowser.JSDialogType.Confirm Then
If MessageBox.Show(e.MessageText, e.OriginUrl, MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation) = DialogResult.OK Then
e.OK()
Else
e.Cancel()
End If
End If
End Sub
Code: HTML/ASPX
<html>
<head>
<script>
alert("abc");
</script>
</head>
</body>
Why triggers the two alert？
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,229
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Hi,
We tested your code here and it works fine. You may want to check whether you have hooked up your event handler twice.
Thanks!
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Rank: Member
Groups: Member
Joined: 12/10/2015
Posts: 17
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This phenomenon does not appear in the form, but the reference to the class will be like this
Code: Visual Basic.NET
Public Class abc
Private WithEvents WebView1 As EO.WebBrowser.WebView
Public Sub New(ByRef vEOWebView As EO.WebBrowser.WebView)
WebView1 = vEOWebView
End Sub
Private Sub WebView1_JSDialog(sender As Object, e As EO.WebBrowser.JSDialogEventArgs) Handles WebView1.JSDialog
If e.DialogType = EO.WebBrowser.JSDialogType.Alert Then
MessageBox.Show(e.MessageText, e.OriginUrl, MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
e.Cancel()
ElseIf e.DialogType = EO.WebBrowser.JSDialogType.Confirm Then
If MessageBox.Show(e.MessageText, e.OriginUrl, MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation) = DialogResult.OK Then
e.OK()
Else
e.Cancel()
End If
End If
End Sub
End Class
Public Class Form1 'Main Form
Pirvate aaa As abc
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
aaa = New abc(WebView1)
End Sub
End Class
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,229
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Hi,
This is almost certainly because the event handler has been hooked up more than once. You can try to removes Handles WebView1.JSDialog and use AddHandler to epxlicitly hook up the event handler like in our sample code. The "Handles" syntax is prone to duplicate hookup problems, particularly with dynamically created controls.
Thanks!
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