在VB6 classic中,我们可以这样做:
Private Sub Form_Load()
WebBrowser1.Navigate2 "http://yourSite.com"
End Sub
Private Sub Command1_Click()
With Webbrowser1
.Document.All("fieldName").Value = "some value"
'click the button
.Document.All("fieldName").Click
End With
End Sub
但是在VB.Net中,我们收到没有Value
属性的错误,所以我尝试了:
With wb
' fill From field
.Document.All("fieldName").SetAttribute("Value", strFrom)
' click the button now
.Document.All("fieldName").RaiseEvent("Click")
End With
但即使这会产生错误:
Object reference not set to an instance of an object.
在线:
.Document.All("fieldName").SetAttribute("Value", strFrom)
如何在VB.net中做同样的事情?
答案 0 :(得分:1)
我记得旧的VB6方式,如果你想在VB.Net代码中调用HTML元素的click事件:
Private Function ClickSubmitButton()
Dim theButton As HtmlElement
Try
' Link the ID from the web form to the Button var
theButton = webbrowser1.Document.GetElementById("loginbutton")
' Now do the actual click.
theButton.InvokeMember("click")
Return True
Catch ex As Exception
Return False
End Try
End Function
使用设置属性,请尝试以此为例(在我的脑海中):
Dim textArea = webBrowser1.Document.All("foo")
If textArea <> Nothing Then
textArea.InnerText = "This is a test"
End IF