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Resource Leaks: Detecting, Locating, and Repairing Your Leaky GDI Code

Posted By:      Posted Date: August 21, 2010    Points: 0   Category :ASP.Net
 

Leaks are possible, even in robust Windows-based applications. As bugs go, leaks are some of the most difficult to find, especially when they occur in graphics device interface (GDI) objects and menus. While free and third-party tools exist to detect such leaks, it is usually difficult to make the connection between the numeric handle value returned by the tool, and a bitmap or menu in your program. This can limit the usefulness of these tools. Custom tools can be built that detect, track down, and eradicate GDI and menu leaks. Here, three such tools are built using well-known and documented APIs.

Christophe Nasarre

MSDN Magazine March 2001




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Debug Leaky Apps: Identify And Prevent Memory Leaks In Managed Code

  

When is the .NET Garbage Collector unable to reclaim memory? The answer might surprise you. Stay tuned.

James Kovacs

MSDN Magazine January 2007


Debug: Detect and Plug GDI Leaks in Your Code with Two Powerful Tools for Windows XP

  

In a previous article, the author devised a simple method to detect Graphical Device Interface (GDI) objects that are not properly released by Win32-based applications on Windows 9x platforms. Because some newer versions of Windows require a slightly different approach to GDI leaks, the author has updated his techniques for those operating systems. He builds and explains two tools designed to detect and eradicate GDI leaks in applications running on Windows XP, Windows 2000, and Windows NT.

Christophe Nasarre

MSDN Magazine January 2003


Showing Designer error for Silverlight App when trying to access resource which contains code e.Resu

  
Environment is: Silverlight 4, VS Studio 2010. Designer is showing error in a Silverlight App when trying to access a resource as below. And there are no build or runtime errors. Extensive research found that, in the "InvestorsProvider" class I am using wcf services, which has a callback method. In the call back method I am using this statement "this.MyProperty = e.Result" where e.Result is ObservableCollection. If I remove the e.Result it is not showing any designer problem. <UserControl.Resources> <local:InvestorsProvider x:Name="investorsProvider"></local:InvestorsProvider> </UserControl.Resources> Here is the error System.Reflection.TargetInvocationException [Async_ExceptionOccurred]Arguments: Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. See http://go.microsoft.com/fwlink/?linkid=106663&Version=4.0.50401.0&File=System.dll&Key=Async_ExceptionOccurred at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary() at SilverlightApplication9.ServiceReference1.GetInvestorsCompletedEventArgs.get_Result() in C:\Documents and Settings\mennis\my documents\visual studio 2010\Projects\SilverlightApplication9\SilverlightApplication9\Service References\ServiceReference1\Reference.cs:line 115 at SilverlightApplication9.Inves

How to Bind to an Object Resource Added From Code Behind?

  

So if I do something like this in the code behind:

MyObject newObj = new MyObject;

newObj.Description = "This is a test";

this.Resources.Add("resource1",newObj);

How could I bind to this resource or at least access its indivudal properties? So in XAML I might have a textbox which I want to bind to the newObj's "Description" property. I found if instead of setting the resource to the entire object but just the string I could do the following:

<TextBox Text="{DynamicResource ResourceKey=resource1}" 

 But I would rather set the resource to the entire object and then use "Path=/Description" for the textbox. Could someone give me an example of how this would be done? Basically, I just need to know what to do in XAML to access individual property of my resource I added.

IIS web site server code: detecting if client browser supports TLS https encrption mode

  

Hi,

Due to security restrictions, we must run our web site under the TLS variant of https (SSL is disabled on the server...only TLS is enabled on the server).

The problem we have is that some customers have TLS disabled in their Internet Explorer  Tools/Internet Options/Advanced settings...and they get a "page cannot be displayed" error.

I need a way to tell those users to "go enable TLS on your browser" (like display a page for this saying this).

Can you tell me how I can determine if (with the server having only TLS...not SSL...enabled) if the browser can support the https?


Some more details on the issue:

I've watched the conversation between the browser client and the server, and it appears that the conversation flow is as follows:

1.) Browser broadcasts to the server which https protocols it supports (and has enabled) (i.e. SSL 1.0, SSL 2.0, TLS 1.0, etc.)

2.) Server checks its configuration (which https protocols are setup to be allowed on the server) and returns back on one of the browser client matching protocols.

 

What I need to determine is how to detect if TLS is enabled on the browser that makes a request (determine it in the ASP.NET server code), so I can generate a page (in the case TLS is not supported on the IE browser) to inform the user.


Code Optimized Web Development Profile (VS 2010 and .NET 4.0 Series)

  
When you first run VS 2010 it prompts you to select an IDE profile to use. The profile you select will configure how tool windows are displayed/docked in the IDE by default and set the default keyboard shortcuts. You can then customize any of these settings by using the Tools->Options menu within the IDE and then override/change them. You can also later reset your profile and pick a different one by choosing the Tools->Import and Export Settings menu command.

Free Code Snippets - ASP.NET

  
You Can Find Useful ASP.NET Related Posts on the above link.

Free Code Snippets - C#

  
Free C# Code Snippets

call JavaScript - jQuery code from ASP.NET Server-Side

  
jQuery got so close to me lately that I can see myself adding the scripts to my project almost unconsciously. The thing is, jQuery is very useful for me, in almost all situations and it has been a do or die enhancement for all my project since I first put my hands on it.

Of course while using it, you encounter few situations which need a bit of research to solve, mostly when you are trying to combine it with some other technologies like: UpdatePanels and ASP.NET Ajax. For instance there are many situations when I would like to run some jQuery magic based on some decision that I make on the server side.

call JavaScript - jQuery code from ASP.NET Server-Side

  
jQuery got so close to me lately that I can see myself adding the scripts to my project almost unconsciously. The thing is, jQuery is very useful for me, in almost all situations and it has been a do or die enhancement for all my project since I first put my hands on it.

Of course while using it, you encounter few situations which need a bit of research to solve, mostly when you are trying to combine it with some other technologies like: UpdatePanels and ASP.NET Ajax. For instance there are many situations when I would like to run some jQuery magic based on some decision that I make on the server side

Microsoft StyleCop: Source Code Analyzer for C#

  
StyleCop is similar in many ways to Microsoft Code Analysis (specifically FxCop), but there are some important distinctions. FxCop performs its analysis on compiled binaries, while StyleCop analyzes the source code directly. For this reason, FxCop focuses more on the design of the code, while StyleCop focuses on layout, readability and documentation. Most of that information is stripped away during the compilation process, and thus cannot be analyzed by FxCop.

How to detect and avoid memory and resources leaks in .NET application

  
Despite what a lot of people believe, it's easy to introduce memory and resources leaks in .NET applications. The Garbage Collector, or GC for close friends, is not a magician who would completely relieve you from taking care of your memory and resources consumption.

I'll explain in this article why memory leaks exist in .NET and how to avoid them. Don't worry, I won't focus here on the inner workings of the garbage collector and other advanced characteristics of memory and resources management in .NET.

Code spelling checker extension for visual studio 2010

  
Building a spelling checker for source code as an extension for visual studio 2010.

C# and XML Source Code Documentation

  
Through many years of enterprise level software development and consulting, I became critically aware of the importance of good source code documentation, and several years ago when I began working with the first release of Visual Studio .NET beta 1 and found C# provided built-in support for inline XML code documentation, I was thrilled.

Bar Code Scanners with the .NET Compact Framework

  
Summary: Learn how to make your applications use bar code scanners in a generic way-ndependent of the specific bar code scanners that are used on different devices. Using the design patterns Façade and Factory, the implementation not only supports multiple bar code scanners, but it also makes it easy to add support for other bar code scanners. After a brief discussion about bar code scanners and the bar code scanner pattern, a download code sample, written in C#, demonstrates the use of the pattern and technologies.

PrinterCE for .NetCF - Code Samples

  
1)Example:Hello World
2)Example:Form Test
3)Example:DrawTextFlow
4)Example:TextColumns
5)Example: Bar Code Test
6)Example:Text Wheel
7)Example:Image Rotation
8)Example:Line Fun

.net code converter

  
For coverting your programming langugae to another languge the below site is very help full

http://www.developerfusion.com/tools/convert/vb-to-csharp/
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