vb.net怎么单击webbrowser中iframe中的按钮

如果你找到的按钮（bb）是正确的，用下面语句：
bb.InvokeMember("click")
为了回到你问题，专门注册到这个论坛^_^，因为我也曾经在网络上获得过别人的帮助。

单击command1获得框架及其元素方法1
 Private Sub Command1_Click()
 Dim Doc2 As HTMLDocument
 Dim Web2 As WebBrowser_V1
  Set Web2 = GetFrameIframeLikeUrl(WebBrowser1.Document, "*baidu.com*")
 If Not Web2 Is Nothing Then
     Set Doc2 = Web2.Document
   Doc2.getElementById("JZGXXJLXX_addBtn").Click，单击了网页框架中的按钮
End If
 End Sub


 Function GetFrameIframeLikeUrl(Vdoc As HTMLDocument, LikeUrl As String) As WebBrowser_V1

 Dim Vtag, Tname As String, FrameWeb As WebBrowser_V1
 For Each Vtag In Vdoc.All
         Tname = Vtag.tagName
         If Tname = "IFRAME" Or Tname = "FRAME" Then
             Set FrameWeb = www.
               If FrameWeb.LocationURL Like LikeUrl Then
  
                   Set GetFrameIframeLikeUrl = FrameWeb
                   Exit Function
              End If
         End If
 Next
 End Function