CODEWITHSUNDEEP
vb.net
morgalis
morgalis

Reputation: 25

How to autofill a webbrowser form without ElementIDs?

I am new to vb.net and need some help. I'm trying to autofill some fields on a website and press the send button, and I know how to do it when there is an ElementID:

WebBrowser1.Document.GetElementById("value")

But I'm stuck now on this webpage which has no ElemendIDs.

The HTML code is:

<tr>
    <td align="center">
        <br>
        <br>
        <form method="POST">
            <table class="form">
                <tr>
                    <td width="100">Login*</td>
                    <td><input type="text" name="login"></td>
                </tr>
                <tr>
                    <td>Password*</td>
                    <td><input type="text" name="password"></td>
                </tr>
                <tr>
                    <td>Full name</td>
                    <td><input type="text" name="full_name"></td>
                </tr>
                <tr>
                    <td>Account number</td>
                    <td><input type="text" name="account_number"></td>
                </tr>
                <tr>
                    <td>MAC</td>
                    <td><input type="text" name="stb_mac"></td>
                </tr>
                <tr>
                    <td>Account disabled</td>
                    <td><input type="checkbox" name="status" value="0"></td>
                </tr>
                <tr>
                    <td>Tariff plan</td>
                    <td>
                        <select name="tariff_plan_id">
                            <option value="0">---</option>
                            <option value="1">Full</option>                            </select>
                    </td>
                </tr>
                <tr>
                    <td></td>
                    <td><input type="submit" value="Add"/></td>
                </tr>
            </table>
        </form>
    </td>
</tr>

How do I find the right values to write inside these fields? Also, how can I select <option value="1">Full</option> and then press the button to send the autofilled values to site?

Thank you for your help

EDIT:

@VisualVincent I tried your third example and managed to find:

<table class="form">

I'm now stuck on how to find this child:

<td><input type="text" name="login"></td>

This is what I tried:

If Element.GetAttribute("className") = "form" Then
    Console.WriteLine("found form")
    'Parent found.
    'Inner loop, looking for the child element we want (<option value="5">Banana</option>).
    For Each OptionElement As HtmlElement In Element.GetElementsByTagName("td")
        If OptionElement.GetAttribute("name") = "login" Then
            'Found. Do something with 'OptionElement'...
            Console.WriteLine("login found")
            ElementFound = True
            Exit For 'Exit the inner loop.
        End If
    Next
End If

I also tried to find the other elements, for instance:

For Each OptionElement As HtmlElement In Element.GetElementsByTagName("input")
    If OptionElement.GetAttribute("name") = "stb_mac" Then
        Element.SetAttribute("value", variable(4))

        ElementFound = True
        Exit For 'Exit the inner loop.
    End If
Next

And for some reason that doesn't work, but this does:

For Each Element As HtmlElement In WebBrowser1.Document.All 'Iterate all <select> tags. You can use Document.All here as well.
    If Element.GetAttribute("name") = "login" Then Element.SetAttribute("value", variable(0))
    If Element.GetAttribute("name") = "password" Then Element.SetAttribute("value", variable(1))
    If Element.GetAttribute("name") = "full_name" Then Element.SetAttribute("value", variable(2))
    If Element.GetAttribute("name") = "account_number" Then Element.SetAttribute("value", variable(3))
    If Element.GetAttribute("name") = "stb_mac" Then Element.SetAttribute("value", variable(4))
Next

Upvotes: 2

Views: 284

Answers (1)

Visual Vincent
Visual Vincent

Reputation: 18320

You're almost there. The only problem is here:

For Each OptionElement As HtmlElement In Element.GetElementsByTagName("td")
    If OptionElement.GetAttribute("name") = "login" Then

You're simply iterating the wrong element type ("tag"). You're iterating <td> elements, whereas name="login" is applied to an <input> element.

Change the loop to the following, and it should work:

For Each OptionElement As HtmlElement In Element.GetElementsByTagName("input")

As a side note I also recommend you change the variable name to something which better describes what it actually is. OptionElement was used in my example because I iterate <option> elements, so in this case I'd name it InputElement instead:

For Each InputElement As HtmlElement In Element.GetElementsByTagName("input")

Then to programmatically put text in the input box/text box, simply use the SetAttribute() method to modify the value attribute:

InputElement.SetAttribute("value", "someTextHere")

Upvotes: 1

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