I am working on a personal vb.net project that will allow me to capture a full-sized image of a given web page. I've been working on this for a few of days and have not found a method that is 100% reliable. Here's what i have tried so far...
METHOD #1 - Using WebBrowser Control and CopyFromScreen
Problem: Fails to capture the entire content of the page if part of it is off screen, obscured, or requires scrolling.
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Several years ago I developed a VB.Net 2003 WinForm application using SQL and the DataGrid control. The Datagrid is bound to a SQL dataset in the form load event. Everything work fine.
With the form opened, the user has the ability to size the datagrid control's column width and row height. I want to be able to capture the new row height as sized by the use?
I'm looking to return a thumbnail image from a full size image stored as varbinary(max) in the database. I'll be using the thumbnails in a gallery-style view, so small size / efficient loading is crucial. I've been using an .ashx to return the full size image into a bound asp.net Image control, with the following code:
Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
Dim conn As New SqlConnection()
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I realize it's probably best to address the re-size at the upload, and stored the smaller image as a discrete column. But in the meantime, is it possible to program the handler to re-size the image on the fly? Ideally, I'd be able to pass an additional query string parameter, something like isResized from the image binding, allowing the same handler to be used for both full size and re-sized images.
I play a game and in the game you acquire skills which you can display on the screen in a box very similar to a data grid. The grid has 3 columns and X number of rows.Column 1 is the name of the skill, column 2 has a descriptive term like "Beginner" and column has the number of points you have acquired in that skill. So it would look something like this:[code]Remember that it is in a data grid so it has cells like an Excel spreed sheet.The program that I use is able to parse the skill name and the points and save that information outside the game to a n area in the program.My question is, is this possible to do something similar in VB? That is something like, Press a hot key, with will get a screen shot, parse the data and save to a data grid in my VB program.
View 2 RepliesMy strengths are datasets and UI design just so you know.I am building a tool for table top gaming. Part of that tool is a battle grid I have an image inside a pannel, so that it can Pan around (which is set to right mouse down)
I need to create a gride, over the top of any loaded image (control is terrainpic(PictureBox)_I have made a grid, of points, I cannot get an image to apear under it.I cant look at this code anymore, so I am coming to you all for help.I need a full on squared grid that can be sized in three fashions, to represent 1 foot 5 foot and 10 foot spaces (which really doesnt matter as the sizes are only relevent to me)
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i want a code for capturing snap through webcam i have a form where i placed a button, what i want is when i click that button it capture a snap and save it in c: drive ?
View 1 RepliesOk I am designing an app in VB2005 and I need to now how to display A full barcode image in my app's. So far I have added a few Dll's but each one displays a "demo" pic over a portion of the barcode. Is there anyway to display barcodes in pic boxes or text boxes or a non demo dll somewhere.
View 3 Repliesdirection to some methods that can capture the contents of a form so that it can be saved as an image. The catch is, the form may not always be displayed on the screen, so BitBlt doesn't work for this particular scenario.
View 8 Repliesi am doing the project on visitor management. i want all code for capture the image from webcam. or steps for that.
View 1 RepliesHow to use GDTwain control in VB.net
View 1 RepliesI need to show video in a picturebox, and when a button is pressed, capture the frame. I am making a desktop qr reader. I have the qr reader completed and working. my issue is my camera now. I would prefer something that actually works, and doesn't have severe memory leak issues, and doesn't throw an exception after it's first or second use. Would AviCap32 or Direct Show be better for what I want? Which would capture the image fastest, without causing exceptions? I tried using an open source solution called webcam_capture.dll, and it worked at first, but now I am getting an exception that I dont know how to fix. I'm assuming this goes in vbGeneral, and not the Interop and Upgrade. Most examples I have seen, use interop, so I wasn't sure. I would prefer not to use WIA. I have attempted it, and it doesn't work quite right on my computer, and this application will be distributed.
View 12 Repliesi ve one picturebox and one OpenFileDialog when i browse the image and load it into a picturebox it didnt fit to a picturebox, then tell me how to load the full image in a picturebox and maintain ratio
View 3 RepliesI'm attempting to grab an image from a webcam without having to connect a driver to a window. I'm predominately using code from a devx tutorial. On page two of the tutorial, it shows how to grab a frame using WM_CAP_EDIT_COPY. The only problem is, I don't want a preview window. I want to simply grab the image without having to associate a window handle to a PictureBox for previewing.
View 6 RepliesI'm thinking about how best to accomplish the following and wanted to see what others suggest.I'd like to capture an Excelworksheetnd save the area that has been edited (vs. the area thatremains blank)s a PNG image. This would ideally be achieved through an Excel add-in.
View 1 RepliesI have written an application which extracts a list of URL's (currently in Internet Explorer cache) from an XML file and displays them in a data grid view. From here I would like to launch Internet Explorer in a hidden mode and capture an image for each of the selected URL's in the data grid view. Is this possible?
View 2 RepliesI've been trying to find a way to use my video camera as a webcam and do chatting from different programs including mine.
my problem is how can i capture an image from my video camera. below are camera stats[code]....
I have written a code from which using a web camera one can record a video and save it onto the HDD but now according to a client requirement he needs to play that video and capture still images from the video and save it onto a picture box's and here is where i am having issues.
1)when i use windows media player to play the recorded video i don how to capture the image from the video by triggering an event
2) also i need to know if i can play the video on picturebox tool(i tried using the winmm.lib and Mci but it din work out for me)
Been throwing around concepts lately at attempting this but haven't been able to come up with anything that actually works. The concept: Capture an image of a process that is hidden.
View 8 RepliesI want to capture the image of my webbrowser, or actually just a part of it.I already achieved it, but it just takes a screenshot of it instead of capturing the bitmap itself. So when i use this technique and you drag another window above it, the window is also captured. (this is what I don't want.)
My code:
' 1. Get the WebBrowsers bitmap.
Dim bmp As New Bitmap(WebBrowser1.Width, WebBrowser1.Height)
Dim BMPEndResult As Bitmap
Dim graph As Graphics = Graphics.FromImage(bmp)
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So I need to get the image of the webbrowser:
- without the scrollbars if possible
- Even if the window is minimized or in the task bar
- Full webbrowser
- and also if possible just a part of it, where I can specify the top, left, width and height
The issue is how do I best capture the invoice number of an tiff image?
I have a VB application in visual studio 2005 that scans invoices, creates .tiff's utilizing a standard image scanner.
I've tried the following...I thought I could save the image to text in an array and find the 6 digit number. Then, I tried to save the image to xml trying the same principal but I get a general error A generic error occurred in GDI+.
i'm currently doing an assignment which is based on vb.net and sql server. here i wanna capture an image and i wanna save that into a sql table named 'customer'. i have downloaded the code for capture the image from the webcam and sWhen i click the save button in that app, its showing to save the captured image in a
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Dim data As IDataObject
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using directshow to capture image from webcam. In my winform application, there was a tabcontrol which contains two tabpages. Tabpage1 contains a picturebox which shows the video from webcam, tabpage2 contains a button to capture the image. My problem is when I pressed the button on tabpage2, my saved image file is empty which has no picture inside.
The following is my code for GetImage:
Public Sub GetImage(ByRef bmp As Image, ByRef pbCtrl As PictureBox)
' Get image from clipboard and convert it to a bitmap
Try
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I'm developing an application and it needs a facility to take photo of the customer using the webcam.
View 6 Replieswebcam drivers were installed using its cd drivers.[code]after skipping the errors in compile (f5) the program works, how to cancel the errors? moreover, when the program is run via the .exe file in the bin folder no errors fire up
View 3 RepliesI'm trying to capture an image from my webcam and save it as a .bmp file. the code i have works perfectly except for 1 issue i cant figure out no matter what I try the issue is that when i save the bitmap it only saves in 320x240 resolution even though I have set the resolution to 640x480 everywhere I could think of.
here is the (edited) code I currently have. some places I didn't know what to change so I put in 640,480 anyways to see what happened but that didnt make any difference and also didnt cause any errors so i left the changes there.
Const WM_CAP As Short = &H400S
Const WM_CAP_DRIVER_CONNECT As Integer = WM_CAP + 10
Const WM_CAP_DRIVER_DISCONNECT As Integer = WM_CAP + 11
Const WM_CAP_EDIT_COPY As Integer = WM_CAP + 30
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picturebox1.image = system.image.drawing.fromfile(x) x is the location where the webcam store the current image.if the code above would work what is x ?
View 14 Replieshow do i capture an image with a webcam and save it in a picturebox?
View 2 RepliesWe need to capture an scanned image from a flat bed scanner and store it in an SQL table.
Does VB.Net 2005 have any tools to allow us to manipulate the scanner and its capture its output programatically?
how to capture and save still image through webcam in vb 2010
View 4 RepliesWhile I have got some leads from an older SO post and from this site, I haven't been able to figure out how to capture each frame of a web-cam.
What I would like to do is something like this capture a frame then do some image processing on it and display the output and then move on to the next frame.
Can I can access to web-cam frame events or is there any efficient way to achieve this?