.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

Converting windows form to bmp - image crops when the screen resolution is changed

Posted By:      Posted Date: October 14, 2010    Points: 0   Category :Windows Application

I am converting windows form to a bitmap file using   DrawToBitmap method.  My code looks like this.

            Dim wid As Integer = 760 '  Me.Width
            Dim hgt As Integer = 780 ' Me.Height
            Dim bm As New Bitmap(wid, hgt)
            Me.DrawToBitmap(bm, New Rectangle(0, 0, wid, hgt))
            bm.Save(CurDir() & "\sample.bmp")

This code work fine on desktop/laptop with the screen resolution 1024 x 768  or above.   If I use app on a table pc – with the screen resolution is 800 x 480, the image gets cropped. 
Any suggestion or alternate mode.


View Complete Post

More Related Resource Links

Using Windows 7 my screen resolution changed.

My screen resolution changed to 1280 X 720.The relavent sreen resolution section in windows only now allows me a max of the above.I am using NVIDIA Ge Force 9800GT graphics and ASUS VW220 monitor.Will appreciate any help.Cheers.    

Windows Form Resolution Setting

HI I created one application in my laptop its working correctly but when i m trying to use that one in Desktop some part of application got hide in right side of screen. I faced this problem today when i was giving the Demo on my application in college. I dont know how to make the application which will run in any system without any resolution problem.       Please help me. My project is windows based. please help me............ Thanku......... 

Converting a System.Windows.Control.Image object to byte array.

Hi i need to convert a specific System.Windows.Control.Image object into an (int) array, because i'm trying to convert a silverlight application into a wpf project. private void createGi02GradBrush()<br/> {<br/> WriteableBitmap oWriteableBitmap = new WriteableBitmap(256, 256);<br/> Image oImage = new Image();<br/> oImage.Arrange(new Rect(0, 0, 256, 256));<br/> oImage.Measure(new Size(256, 256));<br/> oImage.Source = new WriteableBitmap(256, 256);<br/> Gi02GradShaderEffect oGi02GradShaderEffect = new Gi02GradShaderEffect();<br/> oGi02GradShaderEffect.pArray = oPImageBrush;<br/> oGi02GradShaderEffect.gi1GradArray = oGi1GradImageBrush;<br/> oImage.Effect = oGi02GradShaderEffect;<br/> oWriteableBitmap.Render(oImage, null);//here<br/> oWriteableBitmap.Invalidate(); <br/> this.oGi02GradImageBrush = new ImageBrush();<br/> this.oGi02GradImageBrush.ImageSource = oWriteableBitmap;<br/> } I've found some similar topics however Image object is not the same and most of its methods aren't available. Here I'm rendering a writablebitmap with a given Image object, but in wpf we need an array. oWriteableBitmap.Render(oImage, null); Any idea? Thanks. Joseph.  

How to make GIF image transparent on windows form app


I got transparent image saved in GIF format, and I want to put this image on other image. The problem is that this gif image is not transparet anymore when I use picturebox or pannel. I also set BackColor to transparent, but it not works :S ... here example:


That white background needs to be transparent .. how can I do that?

I'm using Microsoft Visual C# 2010 Express

Setting Screen Resolution



  I am developing a website in asp.net.How can i make my web pages view same in different screen resolutions.I am using 1024*768 resolution

Timers: Implement a Continuously Updating, High-Resolution Time Provider for Windows


The timestamps that you can obtain from Windows NT are limited to a maximum resolution of 10 or 15 milliseconds, depending on the underlying hardware. At times, such as when you need to timetag frequent events, it is desirable to achieve a higher resolution. For example, what if you want to be able to contact a thread or perform some other task at intervals more frequent than 10 milliseconds? Suggested ways of achieving better resolution include using performance counters in conjunction with the sytem time to calculate smaller time increments. But using performance counters is a technique that presents its own problems. This article shows one possible way of overcoming limitations inherent in this approach.

Johan Nilsson

MSDN Magazine March 2004

Insert image into Infopath form and save to SharePoint as PDF file


I have an InfoPath web-enabled form in MOSS 2007, that is integrated with a K2 blackpoint process for an approval workflow.

Once the form (a Purchase Order request form) has been approved in the K2 workflow process, I switch the form view to a "print-friendly" view for the requestor to view from the browser.  However, now I need to go one step further with this scenario:

1) I need to somehow insert/embed an image with the scanned-in signature of the approver (likely stored in a SP doc library) at the signature line section of my form.  Also, what are the security requirements for storing such images, but not granting all users access to these (e.g. only services accounts that need to access this for embedding into the form, etc.)?

2) Then I need to convert this final "print-friendly" view of the form (with the signature image) to a PDF document so that I can store it in SharePoint (and email it to the requestor using K2's email event capabilities).

Can anyone help me with a solution to both of these requirement, or point me to some resources for this (even 3rd party components are open-game).



Screen Resolution.



I am developing a web site which is targeted for 1280x800 screen resolution.

Right now i developing the site in 1024x768 resolution.

I am using percentages only with respect to width & height.

Please help me in achieving this for 1280x800 resolution.

Thanks is advance.


Windows authentication login form issue


Hi guys,

I have an application that requires windows authentication to login, the problem is that every time an user logs in under IE and win XP, the username is pre filled with the IP address of the server as instance and the username. I need to replace the server ip with  XXXX instance name instead of doing this manually.

Could anyone pleas help me out with this one?

Thanks in advance,


Open a windows application form names in another

Hi, Now i am in a horrible situation. I want to create an application for open another application(exe) and display all the form names in newly opened application in a compobox.If we selected a compobox item,ie;a form name in new application opened,i want to display all the control names in that form... is it possible? we can do it in same application.but how can i do it in another application? thanks in advance   Anoop

Possible to truly "scale" a Windows Form?

Hi all! I'm trying to think of a way to truly "scale" a Windows Form. I don't just mean resize the form and rearrange the controls accordingly; I mean really "Honey I shrunk the form!" type of shrink, including all text and graphics, as if they had been drawn on a Graphics object with a scale transform less than 1. Aero does this when it shows a shrunken window preview icon... that's exactly what I want, except I want it to happen to the window itself as the user resizes it. I know WPF can do this, but I need a way that'll work on a standard Windows Form without rewriting or massively re-engineering the UI. Any creative ideas? Thanks in advance! :-D

Transfering Data from Windows form application to a website

Hello Friends I have a windows form application and i have to transfer the data from my forms that have been retrieved from SQL server database to a website. So that i can automate the data entry on the website. Can anybody please tell how should i go about doing this. Thanks & Regards, Syed

Unexplained Crash on .NET Windows Form, Potentially a Common Crash?

Hi, I have a continuous problem with a .NET Framework 3.5 Windows Form application crashing with the "...this application has performed an illegal error..." error message.  No errors are being caught through a Try-Catch (using a generic Exception, so to my knowledge it should catch any exception?) block throughout the application, so it appears to be something external.  At first we thought it may have been the users computer, but even after a replacement computer the same error continues.   I was just wondering if there are any common crashes which have any hotfixes etc. for .NET Framework 3.5? Or if anyone else has experienced anything similar?   Thanks

how do i create a windows form application login for to validate username and password from sql serv

 I would like to know how I can create a login form for my windows form application. The login form must be linked to a SQL server 2005 express edition database (in which the username and passwords are stored). The login form must validate the user using the database and allow them to access the program. 
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