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• C# DDD Populate Immutable Objects

  - by Russel

  Hi I have a immutable Customer class in my domain assembly. It contains the following GET properties : id, firstname and lastname. I have a CustomerRepository class in my persistence assembly. In turn, this CustomerRepository class should populate and return a Customer object using a remote web-serivce. My Customer class contains no setter properties and it contains a private constructor. The reason - I dont want the UI developer to get the wrong idea - He should not be able to create or change a Customer object. My question: How do I get my CustomerRepository to populate my Customer object. Reflection? Or should I sacrifice my design and enable a public constructor for constructing the customer object?

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• Running ASP.NET MVC 1.0 application

  - by Jack Daniels

  Hello I'm trying to build an app with ASP.NET MVC 1.0. I already have installed MVC 1.0 but after running the application It trows an exception: Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: CS1705: Assembly 'MVC_CustomControls, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' uses 'System.Web.Routing, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' which has a higher version than referenced assembly 'System.Web.Routing, Version=0.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' Any help is greatly appreciated.

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• Dynamically Loading a DLL

  - by TooFat

  I am trying to simply load a dll written in C# at run time and create an instance of a class in that dll. Assembly a = Assembly.LoadFrom(@"C:\Development\DaDll.dll"); Type type = a.GetType("FileReleaseHandler", true); TestInterface.INeeedHelp handler = Activator.CreateInstance(type) as TestInterface.INeeedHelp; No errors are thrown, and if I step through the code I can walk though the FileReleaseHandler Class as it executes the constructor but the value of handler is always null. What am I missing here? or even is there a better way I should be going about this?

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• What is the "Entity" reffering to in fluent Nhibernate Mapping Configuration?

  - by percent20

  I am trying to learn fluent nhibernate better so am doing a basic sample application from scratch, instead of using someone elses framework. However, I am finding I really don't understand what is going on in assigning mapping files. I have seen a lot of code examples which are all showing the same code, but nothing that spells it out. No description of how it works just that it works. Here is a code example that I see often. return Fluently.Configure() .Database(config) .Mappings(m => m.FluentMappings.AddFromAssemblyOf<Entity>()) .BuildSessionFactory(); So in the code example what is Entity? and how does that piece of code work? Part of me thinks it is the name of the assembly, but seeing as how the namespace I am using is usually the name of the assembly the compiler complains that I am using a namespace as a type. I feel this is important and am rather flustered by the fact I can't figure it out. Thanks

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• How can I consume A web-service reference like a dll

  - by Sergiu

  I have a small question: Can we consume a web-service reference like a sample dll? I mean something like following: 1. Add reference to assembly in the references 2. add namespace to using (using mywebservice) 3. use it in code like: var service = new mywebservice.Service1(); var result = service.GetSomething()? Why I'm asking? It's because of I tried but I get a "strange" error: Cannot load assembly "MyService.dll version, and so on". Thanks in advance!

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• Somewhat newb question about assy and the heap.

  - by Eric M

  Ultimately I am just trying to figure out how to dynamically allocate heap memory from within assembly. If I call Linux sbrk() from assembly code, can I use the address returned as I would use an address of a statically (ie in the .data section of my program listing) declared chunk of memory? I know Linux uses the hardware MMU if present, so I am not sure if what sbrk returns is a 'raw' pointer to real RAM, or is it a cooked pointer to RAM that may be modified by Linux's VM system? I read this: How are sbrk/brk implemented in Linux?. I suspect I can not use the return value from sbrk() without worry: the MMU fault on access-non-allocated-address must cause the VM to alter the real location in RAM being addressed. Thus assy, not linked against libc or what-have-you, would not know the address has changed. Does this make sense, or am I out to lunch?

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• How to retrieve path for a file embedded in Resources (Resource Manager)

  - by curiousone

  I am trying to retrieve file path for a html file that is embedded in resource (resx file) in VS2008 C# project. I want to give path of this file to native webbrowser control (PIEHtml) to be able to navigate (DTM_NAVIGATE) in my application. I know I can pass the string to this control using DTM_ADDTEXTW but since html text size is so big, I dont want to pass string to the control. I need to somehow extract the file path for this html file embedded inside resource manager. I tried using but this does not give the file path of html inside assembly: private ResourceManager resManager = new ResourceManager("AppName.FolderName.FileName", System.Reflection.Assembly.GetExecutingAssembly()); this.lbl.Text = resManager.GetString("StringInResources"); and also read Retrieving Resources in Satellite Assemblies but it did not solve my problem. Can somebody please provide info as to how to achieve this ?

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• How do I extend a WPF application using an addin-like architeture?

  - by Thiado de Arruda

  Lets say I have a WPF application that shows a ListBox with an ArrayList -populated with objects of arbitrary types- as a source, and this application is hosted in an assembly 'A'. By default the ListBox will display the custom object 'ToString' method return value. If a data template for that object type is found, the ListBox will use it for rendering. Imagine that theres another assembly 'B' that references of 'A' and seeks to extend it by providing custom data templates for certain types, to be used in that ListBox. Is there some way to do that without 'A'being aware of B?

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• Deploy SMO application to workstation without SQL Server 2008 installed

  - by Matt

  I am trying to deploy an application that uses SMO on a workstation without SQL Server installed on it. The instance the app is connecting to is SQL Server 2008. The application is failing with: Could not load file or assembly 'Microsoft.SqlServer.Replication, Version 10.0.0.0, Culture=neutral, PublicKeyToken=89845cdc8080cc91' or one of its dependencies. An attempt was made to load a program with an incorrect format. The assembly in question is in the same path as my application as well as system32. I am running this on a Windows 7 64 bit box. I have run SQL Native Client, CLR, and SMO MSIs from the 2008 SMO redist download page. This app worked fine when connecting to SQL Server 2005. What gives?

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• TFS 2010 build template failing to open in designer - how to fix?

  - by Duncan Bayne

  I can open the DefaultTemplate.xaml that was installed as part of our TFS 2010 RC setup. I created a copy of this template called ApplicationTemplate.xaml and modified it slightly, using the workflow designer in Visual Studio. Now, I can no longer open ApplicationTemplate.xaml. When I try, I receive many errors like the following: Error 2 Assembly 'Microsoft.TeamFoundation.Build.Client' was not found. Verify that you are not missing an assembly reference. Also, verify that your project and all referenced assemblies have been built. C:\Projects\tfs\Hydraulics\BuildProcessTemplates\ApplicationTemplate.xaml 1 1828 Miscellaneous Files However, I can still open and edit the DefaultTemplate.xaml file without any issues. Has anyone else come across this problem, & if so, did you manage to resolve it or did you have to recreate the template?

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• Different behavior of reflected generic delegates with and without debugger

  - by Andrew_B

  Hello. We have encountered some strange things while calling reflected generic delegates. In some cases with attatched debuger we can make impossible call, while without debugger we cannot catch any exception and application fastfails. Here is the code: using System; using System.Windows.Forms; using System.Reflection; namespace GenericDelegate { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private delegate Class2 Delegate1(); private void button1_Click(object sender, EventArgs e) { MethodInfo mi = typeof (Class1<>).GetMethod("GetClass", BindingFlags.NonPublic | BindingFlags.Static); if (mi != null) { Delegate1 del = (Delegate1) Delegate.CreateDelegate(typeof (Delegate1), mi); MessageBox.Show("1"); try { del(); } catch (Exception) { MessageBox.Show("No, I can`t catch it"); } MessageBox.Show("2"); mi.Invoke(null, new object[] {});//It's Ok, we'll get exception here MessageBox.Show("3"); } } class Class2 { } class Class1<T> : Class2 { internal static Class2 GetClass() { Type type = typeof(T); MessageBox.Show("Type name " + type.FullName +" Type: " + type + " Assembly " + type.Assembly); return new Class1<T>(); } } } } There are two problems: Behavior differs with debugger and without You cannot catch this error without debugger by clr tricks. It's just not the clr exception. There are memory acces vialation, reading zero pointer inside of internal code. Use case: You develop something like plugins system for your app. You read external assembly, find suitable method in some type, and execute it. And we just forgot about that we need to check up is the type generic or not. Under VS (and .net from 2.0 to 4.0) everything works fine. Called function does not uses static context of generic type and type parameters. But without VS application fails with no sound. We even cannot identify call stack attaching debuger. Tested with .net 4.0 The question is why VS catches but runtime do not?

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• SvcUtil and /dconly generates XSD's for data types NOT marked with the DataContract attribute.

  - by Bellerephon

  Has anyone ever encountered a problem with Svcutil and the /dconly option where it generates metadata for EVERY data type in an Assembly, even if it is NOT marked with with the [DataContract()] attribute? It also appears to be generating metadata for types only referenced in the code, such as XmlDictionaryReaderQuotas even though these are not a part of the physical assembly that I generated metadata on. Some info: Using the .NET 4.0 version of SvcUtil. Does not matter if class is empty or not. No references are specified in the command line for SvcUtil. Command line: "C:\In Progress Work (Prospective)\Prospective Server\Prospective Server\Management\Prospective.Server.Server.NET40.Debug.AnyCPU.dll" /nologo /t:metadata /d:"C:\In Progress Work (Prospective)\Prospective Server\Prospective Server\Management" /dconly

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• Subtract displaced mask using OpenCV

  - by dario_ramos

  I want to do: masked = image - mask But I want to "displace" mask. That is, move it vertically and horizontally (as long as the intersection between it and image is not empty, this would be valid). I have some hand-coded assembly (which uses MMX instructions) which does this, embedded in a C++ program, but it's unstable when doing vertical displacemente, so I thought of using OpenCV instead. Would it be possible to do this calling only one OpenCV function? Performance is critical; using OpenCV, time should be at least in the same order of magnitude as the assembly code.

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• VS2008 project with Entity Framework model results in "always dirty" compile

  - by Jeremy Lew

  In VS 2008, I have a simple .csproj that contains an Entity Framework .edmx (V1) file. Every time I build the project, the output DLL is updated, even though nothing has changed. I have reproduced this in the simplest-possible project (containing one ordinary .cs file and one edmx model). If I remove the edmx model and build repeatedly, the output assembly will not be touched. If I add the edmx model and build repeatedly, the output assembly is modified each time. This is a problem because the real project is a dependency of dozens of other projects and it is wreaking havoc with what times when working in higher layers of the application. Is this a known problem? Any way to fix it? Thanks!

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• How do I properly register the Type Library of A VB.NET COM+ Component?

  - by k_Dank

  I am looking to upgrade legacy VB6 COM+ components to VB.NET components. I have seemingly upgraded one already, called EventPackage, which has one class, IEventListener. Another, TradeOrders, Implements EventPackage.IEventListener. When attempting to build TradeOrders, I get the following Errors/Warnings; Cannot load type library for reference "EventPackage". Library not registered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)) The referenced component 'EventPackage' could not be found. Type 'EventPackage.IEventListener' is not defined. In the .vbproj, I notice this reference <COMReference Include="EventPackage"> <Guid>{0D76C094-21A6-4E04-802B-6E539F7102D7}</Guid> <Lcid>0</Lcid> <VersionMajor>2</VersionMajor> <VersionMinor>0</VersionMinor> <WrapperTool>tlbimp</WrapperTool> </COMReference> When I search the registry for this Guid, I find nothing. When using GUIDs for similar COM+ objects, I find them in HKEY_CLASSES_ROOT\CLSID\{...}\TypeLib ("..." being the GUID of the other component). When I go to the registry key name corresponding to EventPackage.IEventListener, I find that there is no \TypeLib subkey. As you might suspect, searching the reg for "0D76C094-21A6-4E04-802B-6E539F7102D7" yields no results. So I know this must be a registry problem, But I have tried seemingly every google result I have found. I have tried Regasm and regsvcs .exe's to no avail. Many pages just tell me that dragging the dll to the COM+ manager should automatically register the component. So how do I register the Type library? Details on how I made EventPackage COM+ component Ran the VB6-VB.NET wizard Then I added some lines to the assemblyinfo.vb file added Imports System.EnterpriseServices added Imports System.EnterpriseServices Imports System.Data.SqlClient <Assembly: CLSCompliant(True)> <Assembly: AssemblyKeyFileAttribute("...")> for a strong name <Assembly: Guid("...")> (Where "..." is the COM+ CLSID of the old component) I added the following to the class file IEventListener.VB Imports System.EnterpriseServices <ComClass("...")> _ (Where ... is the proper COM+ CLSID, that is the only argument) Inherits ServicedComponent changed the ID made by the Conversion wizard to the proper value (from <System.Runtime.InteropServices.ProgId("IEventListener_NET.IEventListener)> to <System.Runtime.InteropServices.ProgId("EventPackage.IEventListener")> _ Then I dragged the DLL into the COM+ manager in the proper COM+ application (although, the "Path" is not specified and only says mscoree.dll)

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• C++0x optimizing compiler quality

  - by aaa

  hello. I do some heavy numbercrunching and for me floating-point performance is very important. I like performance of Intel compiler very much and quite content with quality of assembly it produces. I am thinking at some point to try C++0x mainly for sugar parts, like auto, initializer list, etc, but also lambdas. at this point I use those features in regular C++ by the means of boost. How good of assembly code do compilers C++0x generate? specifically Intel and gcc compilers. Do they produce SSE code? is performance comparable to C++? are there any benchmarks? My Google search did not reveal much. Thank you.

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• replace _asm with intrinsic equivalent

  - by coolsun20

  How can I replace the following 32-bit driver assembly to intrinsic as I am porting over my driver code to 64-bit: _asm jmp short $+8

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• Millisecond-Accurate Scheduling of Future Events in C++/CLI

  - by A Grad Student at a University

  I need to create a C++/CLI mixed assembly that can schedule future calls into a native DLL with millisecond accuracy. This will, of course, mean setting a timer (what kind?) for a millisecond or three beforehand, then spinning until the moment and calling the native DLL function. Based on what I've read, I would guess that the callback that the timer calls will need to be native to make sure there are no thunks or GC to delay handling the timer callback. Will the entire thread or process need to be native and CLR-free, though, or can this be done just as accurately with #pragma unmanaged or setting one file of the assembly to compile as native? If so, how? If there is indeed no way to do this in mixed-mode C++/CLI, what would be the easiest way to set up an app/thread (ie, DLL or exe?) to handle it and to get the data back and forth between the native and managed threads/apps?

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• Problem with access to file

  - by phenevo

  Hi, I have winforms application and it has reference to library MyLibrary. MyLibrary has method: string[] GiveMeNamesOfAirports() { string[] lines= File.ReadLines("airports.txt"); foreach(string line in lines) ... } And when I run my Winforms application: I get error: file couldn't be find. I was trying other function: string[] lines = File.ReadAllLines(Path.Combine(System.Environment.CurrentDirectory, "airports.txt")); string[] lines = File.ReadAllLines(Path.Combine(Assembly.GetExecutingAssembly().Location, "airports.txt")); string[] lines = File.ReadAllLines(Path.Combine(Assembly.GetAssembly(typeof(Airport)).Location, "airports.txt"));

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• Compare images to find differences

  - by _simon_

  Task: I have a camera mounted on the end of our assembly line, which captures images of produced items. Let's for example say, that we produce tickets (with some text and pictures on them). So every produced ticket is photographed and saved to disk as image. Now I would like to check these saved images for anomalies (i.e. compare them to an image (a template), which is OK). So if there is a problem with a ticket on our assembly line (missing picture, a stain,...), my application should find it (because its image differs too much from my template). Question: What is the easiest way to compare pictures and find differences between them? Do I need to write my own methods, or can I use existing ones? It would be great if I just set a tolerance value (i.e. images can differ for 1%), put both images in a function and get a return value of true or false :) Tools: C# or VB.NET, Emgu.CV (.NET wrapper for OpenCV) or something similar

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• Finding data file location while using Microsoft Test Framework

  - by Nair

  I have been using NUnit and now I am switching to the Microsoft Unit Test frame work. In my test project I have a folder called TestData and I kept all my test input data files there. I want to use that files for my unit testing. In my test code, I am using Application name space and assembly name space but I can not get to the data folder directly until unless I write a code to find and replace some string to point to the data folder. I am sure someone might have run into the same problem, is the solution to change the path through program or is there a API call which will let us get to executing assembly folders? Thanks,

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• Dll permissions....

  - by lopkiju

  Can I somehow set the permissions for assembly to just read, write and delete the file in some particular folder and nothing more?

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• How to hide classes to external namespaces? Something like the package-protected modifier in Java

  - by devoured elysium

  In java is easy to "hide" classes from outside your package(namespace), as you can define them as package-protected. There seems to be no equivalent keyword modifier in C#. Is there any way I could mimic that behaviour in C#? I have a couple of classes that I really wouldn't like the rest of the assembly to know of. It is ok for classes in the same namespace to know of, but I'd like them to be hidden from the rest of the library/application. I know of the internal keyword, but that only hiddes classes if you try to access them from outside your assembly. That is not really my case, as I'd like to keep everything glued in just one .DLL/.EXE. Thanks

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• When would I need to call base() in C#?

  - by user310291

  My BaseClass Constructor is called whereas I have a constructor in derived class so when would I need to call base() ? class BaseClass { public BaseClass() { Debug.Print("BaseClass"); } } class InheritedClass : BaseClass { public InheritedClass() { Debug.Print("InheritedClass"); } } private void Form1_Load(object sender, EventArgs e) { InheritedClass inheritedClass = new InheritedClass(); } Output 'Inheritance.vshost.exe' (Managed (v4.0.30319)): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\Accessibility\v4.0_4.0.0.0__b03f5f7f11d50a3a\Accessibility.dll' 'Inheritance.vshost.exe' (Managed (v4.0.30319)): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled. BaseClass InheritedClass The thread 'vshost.RunParkingWindow' (0x12b4) has exited with code 0 (0x0). The thread '<No Name>' (0x85c) has exited with code 0 (0x0). The program '[4368] Inheritance.vshost.exe: Program Trace' has exited with code 0 (0x0). The program '[4368] Inheritance.vshost.exe: Managed (v4.0.30319)' has exited with code 0 (0x0).

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• Persistent Logins

  - by Trido

  I am following this article on creating persistent login cookies with my ASP.NET site: http://msdn.microsoft.com/en-us/library/system.web.security.formsauthentication.encrypt.aspx The issue is that when I navigate to the page, I get the following compiler error: Compiler Error Message: CS1061: 'ASP.administration_login_aspx' does not contain a definition for 'Login_Click' and no extension method 'Login_Click' accepting a first argument of type 'ASP.administration_login_aspx' could be found (are you missing a using directive or an assembly reference?) Can anyone tell me why this is. The error message doesn't really say much and I don't believe I am missing a directive or assembly reference. The code builds without any problems. EDIT: I did not include code because I said I was following that link which includes code. I copy/pasted from the example.

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