Hello , I try to click a button with no ID? vb.net

<button type="submit" name="B5" style="height: 20; background-color: #FFFF00; width:20" onclick="submitform(2);"></button>

Private Sub Button5_Click(sender As Object, e As EventArgs) Handles Button5.Click
        B5 = WebBrowser1.Document.GetElementById("B5")
        CheckButton = WebBrowser1.Document.GetElementById("B5")

        If Not B5 Is Nothing Then
            B5.SetAttribute("value", "B5")
            'skip_button.InnerText = "skip_ad_button" 'Replace testID by the ID you want
            WebBrowser1.Document.GetElementById("B5").InvokeMember("click")
        End If

        If Not CheckButton Is Nothing Then
            'some code here
        End If

        For Each element As HtmlElement In WebBrowser1.Document.GetElementsByTagName("div")
            If element.InnerText = "B5" Then
                element.InvokeMember("click")
                Return
            End If
        Next

    End Sub

var buttons = webBrowser1.Document.GetElementsByTagName("button");

foreach(var button in buttons)
{
if(button.GetAttribute("name") == "B5")
{
// Do your  stuff here
}
}