How to know if wpf webbrowser has completed loading the page

Question

1.00/5 (1 vote)

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Hi all,
i am currently trying to use a web browser created dynamically in code to extract details in a web page. but i am unable to know when the load is complete. i know there is .LoadCompleted event.
i tried it and it is not firing for some reason. so droped it.
but i am kind of looking for the type where we used to do for winforms webbrowser control. check if the document is ready kind of like this

VB

Do Until WebBrowser1.ReadyState = WebBrowserReadyState.Complete
   Application.DoEvents()
Loop

is there anything similar. so that i can check and continue with the rest of the code.

VB

''Creating the web browser dynamically
                webBrwFrst = New WebBrowser
                webBrwFrst.Navigate(New Uri(strComurl))
'''now i must check if the web page is loaded or not to continue to extract the details of the products in the webpage
''some thing like do until webbrwFrst.loaded= true then
''''Do the extraction
''loop

assuming the webpage is like Samsung or LG product web page i want al the product list in that page with there link.
so i must wait till all the images and all the details are loaded to the page

XML

<Window x:Class="Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="320.877" Width="588.123">
    <Grid Height="260.883">
        
        <Label HorizontalAlignment="Left" Margin="0,12,0,0" Name="Label1" Width="100" Height="23.139" VerticalAlignment="Top">Input Excel File:</Label>
        <TextBox  Margin="106,12,57,0" Name="txtbxFlePth" Height="23" VerticalAlignment="Top" />
        <Button HorizontalAlignment="Right" Margin="0,12.139,8,0" Name="btnBrwser" Width="43" Height="23" VerticalAlignment="Top" >Browse</Button>
        <ProgressBar Margin="15.856,115,57,121.883" Name="ProgressBar1" />
        
    </Grid>
</Window>

Posted 10-Feb-13 20:16pm

Manu_vish

Updated 10-Feb-13 21:59pm

v3

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Comments

Sergey Alexandrovich Kryukov 11-Feb-13 2:21am

Why this Application.DoEvents? Do you know what it does? This code is a real crime! (Against yourself and your user, yes.)
—SA

Manu_vish 11-Feb-13 2:57am

ya, i know so only want to avoid it. is there any way i can check if the bowser is loaded. i just showed the code how i used to do in forms.

2 solutions

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Manu_vish · Accepted Answer · 2013-02-11T17:52:00

As discussed i didnt find any solution but have to go with making the webbrowser visible or making use of the forms webbrowser. i went with forms but the "HUGE" problem is i will have to use the doevents to get it loaded and might give error. will try it any how.
thank you very much FOX for helping on this. if any of you guys have other solution please post it. may be it will help others a lot or i only might use it

Thomas Daniels · Accepted Answer · 2013-02-10T21:14:00

Solution 1

Hi,

~~Instead of LoadCompleted, try DocumentCompleted[^].~~
In your comment, you said that you don't add any web browser control. I think the LoadCompleted event will only fire if you've added a web browser control on your form.

Hope this helps.

Posted 10-Feb-13 21:14pm

Thomas Daniels

Updated 10-Feb-13 22:00pm

v3

Comments

Manu_vish 11-Feb-13 3:32am

it is windows forms webbrowser event. i need a WPF webbrowser event

Thomas Daniels 11-Feb-13 3:41am

What's your code?

Manu_vish 11-Feb-13 3:52am

updated the question

Thomas Daniels 11-Feb-13 3:53am

Thank you! Can you also provide the XAML code?

Manu_vish 11-Feb-13 3:56am

the xml code is nothing just text boxes and the option to select the excel file from where i will get the list of URL to loop through.
I have not added any browser control if that is what you are looking for

Thomas Daniels 11-Feb-13 4:00am

Yes. Answer updated.

Manu_vish 11-Feb-13 4:02am

Thanks a lot for he answer. is there no way i can do it in background. creating it dynamically and loading the webpage without being visible

Thomas Daniels 11-Feb-13 4:05am

If you want to read web page contents, have a look here:
http://www.tech-recipes.com/rx/1954/get_web_page_contents_in_code_with_csharp/

Manu_vish 11-Feb-13 4:09am

but due to some java scripts the required details are not fully loaded til the page is loaded. so i need to load the page. streaming might not help that much.

Thomas Daniels 11-Feb-13 4:15am

streaming might not help that much.
Why might streaming not help that much?

Manu_vish 11-Feb-13 4:17am

i tried it. few of the products were left out. and was unable to get the full list. the java scripts loads the page dynamically. so only this webbrowser came into picture

Thomas Daniels 11-Feb-13 4:22am

But why you don't add a web browser to your form?

Manu_vish 11-Feb-13 4:25am

that is last option left. thought could do it without users viewing it and giving little "Surprise" as to "WOW the data came. i think he took it directly from the server" :) :) :P