.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

Capturing each frame of WebBrowser

Posted By:      Posted Date: September 08, 2010    Points: 0   Category :WPF
I need to capture each frame of System.Windows.Controls.WebBrowser Windows 7 does that nicely, you can notice that if you open a browser with some dynamic animated content like Flash or Sliverlight and look at the previews hovering over the taskbar or Win+Tab screens with Aero enabled, you can see the performance displayed there matches usual performance of the browser. I have prepared a code trying to achieve the same, but this code runs much slower, the frames per second rate is very low, and causes different exceptions after few minutes of running the application. Please take a look and tell me how to achieve the same high performance of capturing a browser rendering window each frame? The solution is a WPF Application named "WpfWebBrowserApplication" and requires PresentationCore, PresentationFramework, ShDocVw, System.Drawing references. <Window x:Class="WpfWebBrowserApplication.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525" Loaded="Window_Loaded"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="0.5*"></ColumnDefinition> <ColumnDefinition Width="0.5*"></ColumnDefinition> </Grid.Co

View Complete Post

More Related Resource Links

Update net frame 3.5.


I use visual studio 2008 but It's only use net frame work 2.0, Can I update and use net frame work 3.5 for Visual Studio 2008 ? Please help me !


Web Services: Capturing and Analyzing Client Transaction Metrics for .NET-Based Web Services


This article presents a general-purpose client quality reporting mechanism that can be used in any .NET-based transaction system that employs HTTP/SOAP. The design uses client response time and quality recording, upload of logs as SOAP headers attached to new transaction requests, and server handoff of these headers to a low priority queue for logging and analysis. This technique gives an enterprise near real-time information on actual end-user response times. These response times reflect network delays, client application overhead and server delays. By using this technique, enterprises can avoid the need to develop custom software to mine HTTP logs.

Brian Connolly

MSDN Magazine July 2004

Is master page a best alternative for Frame Sets ??


My webpage has one banner with a logo, a vertical menu bar on the left side of the page and a footer . I have 5 other pages which should get loaded when the user select them from the menu bar. what my concern is actually the banner,  menu bar  and the footer should not change when the requested page loads. This definitely can be handled by sets. But I want to know whether there are any other alternatives for frame sets or could master page be helpful for this purpose ????? 

Any help would be appreciative .

How to draw editable controls on Windows Vista Glass Frame?

I have a form that is set completely transparent with DwmExtendFrameIntoClientArea API, the issue am facing is when i have editable controls (ComboBox) on the forum the editable part goes transparent the text on the ComboBox is no more visible, i found a solution for the same issue at the following link  http://weblogs.asp.net/kennykerr/archive/2006/08.aspx However it doesnt works, and i read somthing on another web that this soultoin will not work on RC1, or i might be missing some thing, Any help or reference to resolve the issue in C# would be appreciated,   Regards Vallarasu S.

Capturing video remote from specific camera

Hi, I like to capture video with this camera http://www.sparkfun.com/commerce/product_info.php?products_id=8773 it has a rca output wich should be converted to a bytearray to send over a serial interface like ZigBee and back to show it on a eg laptop. I've got two questions: 1. How can I convert a rca signal to a bytearray? 2. How can I convert a bytearray back to a rca signal? Rca is the yellow plug for your video! Any help would be appreciated! Roel

Extract a number from WebBrowser component

Basically, I am using this program that goes to this webpage, and tells the user how much points they have.   <div class="profileresults"><b>Gift Point Balance: 485</b></div>   That's the html. I am looking the extract just the 485 part. Just to note, this number value can be anywhere between 5 and 1000 or HIGHER. I know I'm going to have to use regex for this, so please help me, as I have no clue what do work from next.    

No symbols are loaded for any call stack frame. The source code cannot be displayed.

Hello.I installed VisualStudio.NET 2005 a few days ago.  ( not beta )While I'm debugging, I'm faced with strange message box.-- MessageBox --No symbols are loaded for any call stack frame. The source code cannot be displayed. -- Debug Detail Window --FatalExecutionEngineError was detectedMessage: The runtime has encountered a fatal error. The address of the error was at 0x7a2b5aec, on thread 0x358. The error code is 0xc0000005. This error may be a bug in the CLR or in the unsafe or non-verifiable portions of user code. Common sources of this bug include user marshaling errors for COM-interop or PInvoke, which may corrupt the stack.How should I solve this problem?Please answer me..Thanks.Gwisun.

Profile_OnMigrateAnonymous: capturing new login User.Name?

Hello all, I have a field stored in a database using the AnonymousID of a visitor. I want to have this field updated with the user's ID once they authenticate. Here are my questions: 1.) Is the Profile_OnMigrateAnonymous in the global.asax the proper place to do this. 2.) How can I capture the new login ID? Is is as simple as calling: HttpContext.Current.User.Identity.Name ? Thanks and have a good evening

How to open an excel document in a webbrowser control

Hi,  I have an XBAP app that we would like to be able to open an Excel doc in a WebBrowser control but instead we always get prompted to opne in Excel.  Is this possible?  Here is what I have tried.  The reports are in SharePoint but we want to show them in our own application not SharePoint.       System.Windows.Forms.WebBrowser ReportView = new System.Windows.Forms.WebBrowser();     WindowsFormsHost ReportViewHost = new WindowsFormsHost(); ReportView.Navigate(_fileName,   "_self", postBytes, "Content-Type: application/vnd.m?s-excel"); ReportViewHost.Child = ReportView;   _filename would be something like http://localhost/shared%20documents/myfile.xslsx Thanks for any suggestions. Rhonda

Capturing state of the current scope.

is there a way to gain access to the state data for the current scope?

Possible bug in WebBrowser Control realization in WPF and Windows Phone 7

Hello, I'm tried to make authentication component for russian social network Vkontakte.ru (vk.com). In russian forum nobody answered me. The proplem: When authentication is complete WebBrowser component must be redirected to page like: http://vkontakte.ru/login_success.html#session={%22expire%22%3A%221272008089%22%2C%22mid%22%3A%22100172%22%2C%22secret%22%3A%229c8d8f0305%22%2C%22sid%22%3A%221131703552161ae352a1256402e3140d7cbde41b1602a93d15472c82%22} In Windows Form application all works normal. But in WPF browser was redirected to http://vkontakte.ru/login_success.html Without #session.... It happened not only in WPF Applications, but even in Windows Phone 7. It is a bug? Or this parameter can be accessed from another place?

Page navigation in a frame throws an exception

I created a very simple WPF project that exhibits the following error. I have no idea how to get of this error. System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='System.Windows.Controls.Menu', AncestorLevel='1''. BindingExpression:Path=TemplatedParent; DataItem=null; target element is 'MenuItem' (Name=''); target property is 'CommandTarget' (type 'IInputElement') Steps to reproduce:1. Create a WPF Application project in Visual Studio 2008 (Windows 7)2. Create Page1.xaml <Page x:Class="WpfApplication1.Page1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Page1"> <TextBlock> <Hyperlink NavigateUri="Page2.xaml">Page 2</Hyperlink> </TextBlock> </Page> 3. Create Page2.xaml <Page x:Class="WpfApplication1.Page2" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Page2"> <TextBlock> <Hyperlink NavigateUri="Page1.xaml">Page 1</Hyperlink> </TextBlock> </Page> 4. Add a frame in Window1.xaml <Window x:Class="WpfAppli

Unable to evaluate expression because the code is optimized or a native frame is on top of the call

I have some code that gets the exception Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack. I have pasted some code below. I have confirmed that I am in mixed mode debugging, (native and managed). I have also confirmed that I am not 'pre-compiline' b4 debugging. the code is for a 'csv' download. Can someone help? Response.Clear(); Response.ClearHeaders(); //set the conttent type of the file to be downloaded (IF NEEDED) Response.ContentType = "application/vnd.ms-excel"; // initialize the http content-disposition header to indicate a file attachment with the filename Response.AppendHeader("Content-Disposition", "Attachment; Filename=\"" + strFileNameCSV + "\""); //// transfer the file byte-by-byte to the response object FileInfo fileToDownload = new FileInfo(strFileNameCSV); Response.Flush(); Response.WriteFile(fileToDownload.FullName); Response.End();

WebBrowser zooming in WPF

I am using a System.Windows.Controls.WebBrowser control in my WPF application to display an HTML page, but require the ability to zoom in/out of the page. I have found an option for windows forms: http://slingkid.blogsome.com/2007/04/13/ie-zoom/ , but I cannot see how/if this applies to the WPF WebBrowser control. Any help would be appreciated

How to databind Frame UriSource from two sources???

I need to create a navigation model where I can load content from listbox menu into frame and at the same time by clicking a usercontrol or a button in the loaded into frame page. I can successfully navigate by clicking menu items. However, I cannot do the same when I initiate page load into frame from already loaded page into frame. I am looking for the right technique to be able to achieve it. Here is what I did so far: I databind UriSource link from xml which is associated with items in the list box this way: Below is the XAML code: <Frame x:Name="ContentFrame" JournalOwnership="OwnsJournal" NavigationUIVisibility="Hidden" HorizontalAlignment="Left" Width="Auto" DataContext="{Binding SelectedItem, ElementName=Nav_ListBox, Mode=OneWay}" Source="{Binding XPath=UriSource}" /> <ListBox x:Name="Nav_ListBox" Margin="0,18,0,0" ScrollViewer.HorizontalScrollBarVisibility="Hidden" Background="#FFF2F2F2" ItemsSource="{Binding Source={StaticResource PagesData}, XPath=page}" /> I created a UserControl to be a container of the loaded data. Then, I generate repetitive content of the loaded page defined in xml. I also define UriSource associated with each item in xml I load into the page. Each item has unique UriSource. <Grid.DataContext> 
ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend