web browser drop down boxes

[andrewsfm]

Hi,

I am trying to select one of the two options below from a dropdown box in webbrowser, I am unable to get it working,

<option data-user-code='af' value='93'  aria-label='Andrew'>Andrew(351)</option><option data-user-code='al' value='352'  aria-label='James'>James (353)</option>

Here's my code:

Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
WebBrowser1.Document.GetElementById("user-code").SetAttribute("selectedindex", "351")
end sub

So, trying to select Andrew. It doesnt do anything at all and no errors,

thanks

[bensonsearch]

try

WebBrowser1.Document.GetElementById("user-code").SetAttribute("Value", "Andrew") 'or Andrew (351), also make sure user-code is the select elements id

[andrewsfm]

try

WebBrowser1.Document.GetElementById("user-code").SetAttribute("Value", "Andrew") 'or Andrew (351), also make sure user-code is the select elements id

Thanks, I tried both variations and it just left the dropdown blank, I am sure the user-code is correct ID.

[detlion1643]

.GetElementById("") does just that, get's an element by it's id... The different options in the dropdown list don't contain id's. ID's are just like the "value=" you see, only it would be "id=*".

What is the <select **** part that comes before the options?

[andrewsfm]

.GetElementById("") does just that, get's an element by it's id... The different options in the dropdown list don't contain id's. ID's are just like the "value=" you see, only it would be "id=*".

What is the <select **** part that comes before the options?

<select aria-invalid="false" id="user-code" name='user-code' data="user-code-drop-down">

[detlion1643]

We need to get the "option" elements that are part of the "select" element. Easiest way is to get a collection of the "select"'s children elements:

Dim htmlCol As HtmlElementCollection = webBrowser1.Document.GetElementById("user-Code").Children

I can't remember VB looping atm, but in C#:

for(int i = 0; i < htmlCol.Count; i++)

Inside of the loop, you can now test the elements one at a time. At this point, you'd need to know what to test for. For example, let's test for data-user-code:

If htmlCol(i).GetAttribute("data-user-code") == "*" Then...

where * is equal to whatever string to test for. You can use the other attributes of the option elements if needed. Once you find the correct one you'd like to select:

htmlCol(i).SetAttribute("selected","selected")

should select it.

[Vexslasher]

This is the code to select an item on a drop down in the web browser
'newurl is a commonly used name for the parent but you will probably need to change this value to something else for the site your using
'where imghp is place the value of the option you want to select

WebBrowser1.Document.GetElementById("newurl").SetAttribute("value", "imghp")

I just tested this personally and it does work

[andrewsfm]

This is the code to select an item on a drop down in the web browser
'newurl is a commonly used name for the parent but you will probably need to change this value to something else for the site your using
'where imghp is place the value of the option you want to select

WebBrowser1.Document.GetElementById("newurl").SetAttribute("value", "imghp")

I just tested this personally and it does work

hmm still confused, the code I put above,

so ID = User-code so that goes where newurl is, then "value", Andrew? etc?

[Vexslasher]

In the html source code here is what they will usually look like
parent tag

<select name="newurl"

sub item tag

<option value="imghp">

If you put the wrong thing you wont get a error message but your code wont do anything.

And you don't change the text where it says "value" you change the text where it says imghp to whatever the value is for your sub item Andrew.

[detlion1643]

FYI:

parent tag
<select name="newurl"

That should be:

<select id="somethingUniquelyNamed" name="SomeNameHere"...

The .ElementByID("*") refers to the id, not the name.

If you put the wrong thing you wont get a error message but your code wont do anything.

Not really so, in my testing, if using .ElementByID("*") and the element with that id does not exist in the document, you will get an exception.

[Marcos1]

I think Vexslasher has written that well. you should enter 93 or 351 instead of imghp? you could probably also use "aria-label" instead of "value", and the point to their names.

[Vexslasher]

@detlion1643
I said "usually" in other words the tag can be coding a bunch of different ways, so that tag is not always the same.

[detlion1643]

@detlion1643
I said "usually" in other words the tag can be coding a bunch of different ways, so that tag is not always the same.

I was just pointing out that the id attribute is the one that gets tested and not the name attribute when using .ElementById("*"). If the element doesn't have an id attribute, then you gotta find another way to get to that element then.

[Vexslasher]

Well the webpage I was using to test my code had it in that tag and it worked with that one.

[andrewsfm]

Right so I tried:

Dim pageinput as htmlelementcollection in pageinput
for each elem as html element in pageinput

if elem.getattribute("id)" = "user-code" then
elem.setattribute("aria-label", "Andrew")
end if
next

Nothing happend...hmm

[Vexslasher]

Can you provide the website your trying to accomplish this on. It would make it much easier for me to provide you with a solution that will work without being modified.

[ident]

Back and forth, back and forth. Why not simply post the url and be done with it.

Public Class Form1
 
    Private Sub SomeMethod()
        Dim element = Me.WebBrowser1.Document.GetElementsByTagName("select") _
                      .Cast(Of HtmlElement) _
                      .FirstOrDefault(Function(el) el.GetAttribute("name") = "surely has a name?")
 
        If element IsNot Nothing Then
            element.SetAttribute("value", "what ever") 
        End If
    End Sub
End Class

[andrewsfm]

Thanks all for help,

realised, I was using "input" when defining the getelementsbytagname, as this is what the other text fields are, created a new one for select and worked perfectly.

Thanks for your time, much appreciated.

[ident]

Cant see once above where you have used bytagname..... Always makes me wonder when members refuse to give out links.