Our software, which installs to the GAC, is dependent on third party software which can be installed separately. To alleviate some of the coupling between our version and the third party version, we're looking at using configuration or policy files to redirect between versions known to work wit...more >>

I'm working on a project that integrates with Office and the Windows shell. Right now we have add-ins for Excel, PowerPoint, Word and Outlook, and a couple of shell extensions for Windows Explorer, all written in C++. We're at a point where we want to overhaul some of this stuff, so we're c...more >>

Hi, I'm having trouble running untrusted code inside a sandboxed AppDomain, and I was hoping that someone could help me! The code is user-supplied, and so I want my Winform application to run the code in a seperate AppDomain without any more permissions than given in the Internet permiss...more >>

Hi all I have some trouble. I hava configurable date format, for ex. like this 'yyyyMMdd' and I try to convert strings to date time, and .net give me an error 'string is not recognized as a valid DateTime', my code is: DateTimeFormatInfo df = new DateTimeFormatInfo(); df.DateSeparator = str...more >>

I notice the following strange behavior of the applications running under ..NET Framework. Let say I have application MyApp.exe which reference assembly MyAssembly.dll. The MyAssembly.dll is strong named assembly, which is installed in the GAC. I notice that if MyAssembly.dll is not installe...more >>

Hi, My console application needs to do some shutdown processing even when a CTRL-C is pressed. So I installed ProcessExit event handler and was surprised to find this did not get invoked when a CTRL-C occurs. I then set about using the Win32 API to install a console ctrl handler t...more >>

Hi, I am using Web Matrix Project as .NET programming environment. Can you show me detailed steps how to import the .ocx library into the Web Matrix Project. I can't seem to be able to import other assembly than .dll, .exe or ..mcl . I am pretty new to the .NET programming environment, and ma...more >>

For example : class A { int a; } class B : A { int b; } There are a lot of instance of A in a system(this means there are a lot of reference to A), and I want to replace all A with B at runtime and make all references originally point to A now point to B. These problem ca...more >>

Sometimes there are several keys map to the same object in the hashtable. How to find them quickly given the object? ...more >>

Hi folks, I was under the impression that once you had loaded an assembly into the GAC, that you didn't have to make specific reference calls to the assembly in another assembly. I was under the impression that this was the way you extended the .net framework. I've just done a little ...more >>

Hi, Introduction ***************** I am writing a file system scanner ( similar to unvisus apps ), this require me to 'check' each file on the file system, hence, I have to know the type of executable being scanned regardless of it's extention. The Problem: ***************** Managed an...more >>

Hi group, If you take the following code, the result is not, as one would expect, an exception, but rather the string "01/12/0500" DateTime dt = DateTime.Parse("£12,500", new CultureInfo("en-GB")); Console.WriteLine(dt.ToString("dd/MM/yyyy")); This also happens with a range of different...more >>

Hello, is it possible to hook into a .NET program and get the Stackframe of the currently executed method? I know I can use the Process Class to enumerate the threads of an application. But can I go any deeper than that? Greetings, Henning Krause [MVP] ========================== Visit ...more >>

Dear all : Please check this: http://msdn2.microsoft.com/library/system.enum.aspx It said : "Class Enum is derived from class ValueType; that is, Enum is itself a reference type, not a value type." Does that mean , because System.Enum is derived from System.ValueType , so the System.Enu...more >>

hello how can i get the parameter "param" from the url http://localhost/myapp/webform1.aspx?param=p1 in the serverside c# code? thank you ...more >>

Does anyone know of an (unmanaged) function to print a signature given the sigblob or do I need to decode the sigblob myself? Thanks, Mike...more >>

Greetings. I have a few questions concerning the version compatiblity of assemblies. Let me first depict the scenario: I am a component designer, my customers are mainly people who design and sell end-user applications. I am using design-time licenses and my components are strongly named. Now ...more >>

The following code in C# results in decimalPlaces = 6. private static long frequency; QueryPerformanceFrequency(out frequency); decimalPlaces = (int)Math.Log10(frequency); The code rewritten in VB.NET however results in decimalPlaces = 7: Private Shared frequency As Long Call QueryPe...more >>

I have an app that references a specific version of a dll in the GAC. If I update that dll in the GAC, and only change the last number of the version, the app doesn't seem to get the new version. Since my app references a specific version, will I need a publisher policy file to redirect the ...more >>

Dear All, I have a few questions regarding CLR Hosting...I have read a few sites that explain them...but I still have some unanswered questions...like... 1. Every process (.net app) loads its own CLR. Is this right? 2. I have a Windows Service that is installed on the my Clients S...more >>

I am so close to getting my manual COM interop classes to load correctly! I have very slowly tracked down the problem to missing .override directives on the classes in the IL generated from my assembly compared to that of TlbImp. I don't really understand why the directives exist in the first ...more >>

I am involved in a port of an engineering application to .NET. While testing some of the math (using doubles), I was surprised to find that in cases where you have an overflow or divide by zero etc..., the result is set to a double.NAN or double.Infinity etc... rather then throwing an Arith...more >>

Hi, I am writing some kind of a file scanner, at certain time all of the files under a certain directory will be scanned, this scan require de-compression of common files formats such as ZIP and MSI, the ZIP file format is well known so there is no problem of decompressing it manually, howe...more >>

I found this problem when I reference gotdotnet user sample Win32Security assembly in some of my VB.NET projects. The Win32Security projects are written in C#. For example, in Win32Security project, AccessType is a enum that is defined as: [Flags] public enum AccessType : uint And in...more >>

I was reading in the .Net Book of the MS Press, and they said that the system namespace is the root of all namespaces and classes in the .Net class library. However I noticed the existence of the Microsoft namespace which is not part of the System namespace. So is the System namespace still...more >>

Hi all, I have a C# user control (a little app I made to display video). In this code I am using a third party .dll, which is written in C++ (un-managed). I am tring to put this control on a web page and somehow the managed code is working OK but when it arrives the part of the code where it is...more >>

I'm trying to get the IL bytes for a specific method using the ISymWrapper assembly. To do so, I get the ISymBolMethod for the method I want and then access the ISymBolMethod.RootScope property and get the start and end offset When I do so, I get the right number of bytes but not the right byte...more >>

I've read in the ECMA standard for CLI that the "ldelem" instructions can throw an "ArrayTypeMismatchException" "if array doesn't hold elements of the required type". This is only for "ldelem.ref". The same exception type can be thrown also by "stelem". I don't really see how this exceptio...more >>

I have a web service that uses an assembly and a Windows service that also uses an assembly. If I ngen the assembly will both the web service and the Windows service use the ngen'd image? If the web service is running behind a clustering of web servers. I use ngen to establish an image on e...more >>

I have a web service that I suspect is having some JIT issues. I have not proved it yet (and suggestions as to how to do so are welcome) but I suspect that the delay (as long as 8-9 seconds) on the first invocation is due to time spent in JIT. I was under the impression that once a method was ...more >>

Hi, I am writing an Obfuscator to Obfuscate managed .NET assemblies, the obfuscator works with most of the assemblies I have tried, how ever, some assemblies ( such as nunit-gui.exe ) generate the following exception ( Only with the obfuscated assemblies ) : “Request for the permission o...more >>

Over a year ago, Bill Menees asked the questoin, "Is there any way to completely disable the download cache?" - answer was "no, but you can just delete everything in it". Is there any new info on disabling the download cache at all? Like Bill, I'm running in to huge problems with debugging...more >>

Ok, here is the situation: We have a windows service A and a windows foms application B, both written in C#, compiled with .net framework 1.1 A starts autmatically at PC startup. For various reasons, we want to launch B when the PC shuts down, without any possibility for end users to interf...more >>

I'm having a problems getting parameter types from the method signature when the CorElementType I get is ELEMENT_TYPE_CLASS or ELEMENT_TYPE_VALUETYPE. For example, the type tokenid I'm suppose to be getting is 0x02000006 but I always end up getting 6 Here is a code snippet of my code. Sig...more >>

Hi, Introduction: ****************************** I am trying to extend an existing section of a PE, in addition to updating the ‘DataDirectory’ies and section RVAs I have to update the resources RVAs and the import and IAT/INT tables RVAs, as for what was just mentioned everything wor...more >>

Hi, I am using ‘CorBindToRuntimeEx’ To create a runtime host and execute an assembly: hr = CorBindToRuntimeEx(. . .) hr = spICorRuntimeHost->CurrentDomain(&spUnk); spIAppDomain = spUnk; spIAssembly = spIAppDomain->Load_3(saRawPEImage); .. . . spIAssembly->EntryPoint->Invoke_3(vtMissin...more >>

Could anybody provide me some tips regarding the performance of weak references vs. strong references? Thanks ...more >>

My app binds to an assembly (version 1.0.0.0) which has a bug. I release a new version (1.0.0.1) where the bug has been resolved. My app should bind to the new version by default without me having to defining a binding policy. It is not. Any ideas why? As far as I know, if the build or the rev...more >>

I'm looking for a way to jump to a arbitrary opcode within a method. The branch functions don't allow for indirection. I'm looking at the calli and ldfn opcodes but I haven't found any examples. Thanks. ...more >>

Hi, It is possible to hook on the UnhandledException event in the Default app domain, and that way get notifications about unhandled exceptions in all of the threads in the win32 process, i.e. all of the App Domains. Is there a way to know in which AppDomain the exception occured? ...more >>

The following snippet is from CurrentTimeZone in Rotor. // // Converts the specified datatime to the Universal time base on the current timezone // /// <include file='doc\TimeZone.uex' path='docs/doc[@for="TimeZone.ToUniversalTime"]/*' /> public virtual Date...more >>

My problem is related to the user-filters used in CLR. They are executed in the 1st pass of the exception handling mechanism (it is a 2-pass mechanism!). But their execution can involve calling other methods, right? How would then look the CPU stack of call frames? More concrete, suppose t...more >>

Hi, Im designing a module that is made of some sub modules (obviously... :) ), each performing other task. One of the sub modules should be very stable, and I dont want it to crash over problems the other sub modules might have. It looks as if using different AppDomains is ideal for my case...more >>