Thumbnail A WebPage Using WebClient Class?
Feb 9, 2009
I am writing a Windows Service to act as an internal Web image collector. I can thumbnail Web navigated to webpages using a webBrowser Control. But since a Service will not support a UI based Control like a WebBrowser control I have switched gears using the wrapper WebClient from system.net. So I am looking for a way to capture and thumbnail a Webpage.I can use the following to grab images off a web pager using webClient but cannot figure out how to thumbnail the entire page.
Dim imgBuffer() As Byte Using wclient As New WebClient() imgBuffer = wclient.DownloadData("http:// Webpage/Image") End Using
Using mem As New IO.MemoryStream(imgBuffer) Using img As Image = Image.FromStream(mem) Me.PictureBox1.Image = img.GetThumbnailImage(100, 100, Nothing, IntPtr.Zero) End Using End Using
End Sub
View 10 Replies
ADVERTISEMENT
Jun 3, 2009
I need to show a thumbnail of a web page on a VB 2008 form. I have found a number of code snippets that mention something called an IViewObject which can apparently do what I need but the only examples are in C.
View 5 Replies
Jun 21, 2010
I need to display the webpage in webbrowser but which it fit the webbrowser there is no need to scroll it and it shows as thumbnail.
View 2 Replies
Dec 4, 2007
I've been trying for a while to use a method I've found on the net to login to a webpage then download zip files off the page.Here is what I am doing:
Code:
strURL = "https://www.someurl.com/"
Client = New WebClient()
[code].....
View 4 Replies
Feb 13, 2012
i created this thumbnail with other programming mothod Test Thumbnail.rar but how can i register it in other windows i tried register it with RegAsm but i don't could register it
View 1 Replies
Jun 2, 2007
I'm writing an application in vb.net to download files from a remote server by ftp using WebClient Class
View 2 Replies
Jul 8, 2009
I am scraping title of webpage. i am using webclient class to get its html source. the true title of webpage is this which apprear on browser "La rvolution" but when i extract it from html source using webclient class i get following string. "La rvolution du sourire juste"
I think its something related to string conversion. how to convert this "La rvolution du sourire juste" to "La rvolution"?
Following info on webpage might give you some clue which is content type. " <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />"
View 4 Replies
Nov 20, 2011
Using the Visual basic browser I would simply, at least for the input of information.
If WebBrowser1.Document.GetElementById("Input") Is Nothing Then
Else
Dim txt As HtmlElement = WebBrowser1.Document.GetElementById("Input")[code]....
But in the case of WebClient class, How do I do this ?As I have been told this is so much faster.
View 2 Replies
Oct 15, 2008
Basicly I'm downloading XML files with the Webclient class for processing and caching in a local database. There are three different categories of data, each contains 1 to n numbers of XML files. To retrieve the XML file I ask the server with following parameters in the URL:
[Code]...
View 2 Replies
Jun 1, 2009
I have been given an ASP.Net assignment at work because I had taken a few courses a couple of years ago. Currently, there are no ASP.Net programmers for me to ask here and I have searched several places (including Pro ASP Net book) to find a solution but have come up empty handed.
I have a class named spErrors which takes the values passed to it. Values passed include the offending page,function/sub, and other values and stores them in property values, then calls Response.Redirect("Errors.aspx") from the page's code behind page. In Errors.aspx, the values of the error/exception trapped in the Catch statement are displayed. This works fine from a web form. My question is, how do I call a web page from a class module?
Each class module has the ErrorHandler() procedure that passes these values to the class object. In the class, there is a Write Only property named Redirect and a method called Execute() which is used to display the error page if the error occurs in another class module. Since Response.Redirect() does not work in a class module, what namespace is needed in order for this to work?
Here is the code I'm using.
In the Catch block.
Catch ex As Exception
Err.Description = ex.Message
ErrorHandler(Err, "function name")
[code]....
View 2 Replies
Jun 30, 2010
I need to grab every link on a webpage that has the following class:
HTML
<a class="post-title"
Here is what I have but I just cant get the href's
vb
Dim HyperLinks As HtmlElementCollection = WebBrowser1.Document.GetElementsByTagName("a")
For Each curElement As HtmlElement In HyperLinks
Dim controlName As String = curElement.GetAttribute("class").ToString
[code]....
View 2 Replies
Nov 16, 2011
Can we write all the control events in a seperate class file in different layer rather than in code-behind of web-page ?
View 1 Replies
Feb 20, 2012
I need to grab some data from a webpage but for me the main problem is I can't grab the data the way I want. I want to grab the data in a listview control but my code is fetching all data within any span tag (span class "inputFieldLabel" which is not required) in a single column of a listview control. I am giving the format (source) of the webpage below and my coding in vb.net (2008),
<br>
<span class="inputFieldLabel">Following Are ...</span>
<span class="inputFieldLabel">01/02/2011</span>
<span class="inputFieldLabel">And</span>
[Code].....
View 1 Replies
Mar 10, 2010
i have an aspx page with vb.net back end. in that page i get names and url's from the database depending on different conditions. My requirement is that when i get the url, the code should then use that url and have that webpage in a small preview form on my existing aspx page. so basically i have a table as follows -
[Code]...
View 1 Replies
Nov 3, 2010
I want to use the ExtractAssociatedIcon method to get the icon of a bitmap.
But in MSDN I found the following statement:
When ExtractAssociatedIcon is used with bitmaps, a thumbnail image may be returned instead of an icon if the system that is running the application has a registry setting that causes bitmap files to be shown as thumbnail images.
Is it possible to turn off the thumbnail and get the icon back?
View 1 Replies
Feb 24, 2011
I have a system where users can upload PDF documents. Rather than displaying the link to these PDFs as a title link, or a PDF icon link, I would like it to be a thumbnail of the first page of the PDF document.
How can I get a thumbnail image of the first (or any specified) page of a PDF document, using ASP.NET 3.5?
View 2 Replies
Jun 27, 2011
I'm trying to create thumbnail previews within my program. These would work for any file type, not only images. So videos too. Right now I'm using IExtractImage to do this. It works perfect, but it seems to randomly crash my program when I call .Extract(). There's no error message, my program just crashes. When I run it in the debugger it doesn't break when it crashes. I have it in a try/catch block and that doesn't seem to help. It's not reproducible and doesn't crash on the same file every time. How can I get it working or just prevent it from crashing my whole program?
I'm using the code from this project:[URl]..
View 1 Replies
Dec 16, 2011
I managed to use the class ClassWSThumb [URL] in order to get screenshoots from webpages.Here is the class file:
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Threading
Imports System.IO
[code]....
Everything seems to be working perfectly, but i bumped into a situation were i dont know how to handle.If the target website has some ajax information that needs to be loaded after the ready state, i get a screenshoot of the page with no data, because the data was not loaded yet.
View 1 Replies
Jul 27, 2009
I have a simple task in DOT NET that is we take a thumbnail an one of the website home page, when we give an URL like in one text box that time control goes to home page of the specified URL and take a picture that home page as a thumbnail and stored in an our specified local disk like we give more than one an up to 100 URLS at a time and stored orderly stored in an our specified local disk
View 1 Replies
Nov 14, 2011
I am trying to get this code to re-size(by a percent) the pdf thumbnail it outputs(which needs to be initially scaled down to 15% of the size of the original pdf document size).Currently, the code only adds the two dimensions as pixels, then renders the image, and draws it into a PictureBox.The code uses Ghostscript as you can see. The problem I am having is getting the dimensions of the PDF file. How can this be done? The code will be posted below:
Imports System.IO
Imports System.Drawing.Imaging
Imports GhostscriptSharp
[code]....
View 8 Replies
Jan 13, 2009
I making a webpage with the help visual basic. I wanted to put a flv video in it and i used flash control for asp.net [URL]. I made the player in flash told it to download the video from the sever. Now when i put the player on the webpage and put the webpage on the sever it cant play the video. But when i just pres the the player which is in swf format it works. It can download the video. But when i put the player on my webpage it cant.
View 5 Replies
Sep 20, 2010
ve been exploring with IThumbnailProvider in VB10. The first attempt I made was to handle MKV file thumbnails. I made the library and everything looked OK when I tested it against MS's Thumbnail app that came in the Windows API pack. Then I attempted to implement it on my computer, and every single thumbnail in the OS broke. Not a single thumbnail was generated by the system. So, after a bunch of trying to rescue thumbnails, I reformatted, reinstalled Windows, and got everything back to normal.
Today, I tried again. This time, using BLP files which are often used in Blizzard games (Warcraft III in particular). To avoid the same issue, I threw the compiled result into a Virtual Machine and tested it there, and it looked lovely. After a bit of experimenting and tweaking, I got it exactly as I wanted, cleaned the thumbnail cache, tested it one last time, and then installed it on my actual PC. Bam, all thumbnail generation is broken again.
View 2 Replies
Oct 13, 2011
I am in search of a way to access a files thumbnail preview and push it to a picturebox on my form. I have the code below that works for jpg files, however it does not work for say a word document's thubnail. displaying the word documents thumbnail in a picturebox would be great!
Dim myBitmap As New Bitmap("C:Doc1.doc", True)
Dim myThumbnail As Image = myBitmap.GetThumbnailImage(40, 40, myCallback, IntPtr.Zero)
PictureBox1.Image = myThumbnail
View 2 Replies
Apr 14, 2010
Is there a way to show videofiles' thumnails in VB application? Ideal situation would be so that the application would recieve videofiles via drag and drop and then show thumbnails from them the same way as you can see a preview thumbnails in Windows file-explorer.
View 4 Replies
Feb 20, 2010
I need to grab a thumbnail from a video file. I dont mind if i need to somehow grab it myself.... But I was doing some research and found IExtractImage which grabs the thumbnails out of the thumbs file in the directory... I haven't found any examples on how to use it in vb, only C#
how to use this or another way to get thumbnails from video files?
View 5 Replies
Aug 20, 2009
Im looking to create a thumbnail from a jpg image. the image is stored in c: empimage.jpg all im trying to do is create a thumbnail from this and save it in c: emp humbimage.jpg. Ive found a number of C# tutorials and some vb.net ones. Apparently this is a really easy thing to do.
View 1 Replies
Jan 25, 2008
Having searched long and hard I came up with nothing to solve this problem.It appears that no body could give me any direction on how to default an Open Dialog box to what ever view type I desired.It was after several fruitless hours that I changed my way of thinking and started to look if this had been accomplished in any other language other than VB.that is when I stumbled on some code in C# written by Robert Rohde (German I think the original code can be found at [url]I have rewritten his code to be VB2005 compliant and It works a treat, so for all those (who like me) couldnt find how to complete this very simple yet so difficult to achieve task I present the code put this first section into a class called FileDialogExtender
View 7 Replies
Jun 4, 2009
I have a folder in which i have some files. I want to view these files in a form as thumbnails.
View 3 Replies
Jun 30, 2009
The preview on my program doesn't show how I would like it to, sometimes it's blank or not big enough for the whole screen, and other things.
I have 3 forms, one is of controls, one is a full transparent form that is just the outside edges with a blank middle, and one of is the background. Reason for this is setting background transparency, and the transparency(opacity) of the top bar of the form, so it will be transparent like vista is normally in xp.
I want it to show always the full form live view on the preview and I am not getting it to work with my 3 form as one form type program, but it works as expected with one form only, but I don't want this because I want individually set transparencies.
View 8 Replies
Aug 6, 2009
Is it possible to set the image windows displays when viewing a file created in a VB.NET application? In my case I have files saved that store info on football plays for a play creator program. Can I use the image of that play as what the user will see when he searches through windows explorer?
Let me further explain with an analogy: photo files in windows have their images displayed as the user cycles through them; he chooses which one he wants to doubleclick based on the thumbnail image of the actual photo. I'd like to have a "photo" of the play itself shown instead of what is now just a blank generic grey icon for the play files that I save.
View 5 Replies
