.net-4.0

问题 I've built a generic config system for an HttpModule that allows pluggable HTTP header inspectors. For reference, here is the basic layout of the code -- this should be enough to get a feel for what I'm doing: public interface IHttpHeaderInspectingAuthenticatorFactory<T> where T: HttpHeaderInspectingAuthenticatorConfigurationElement { IHttpHeaderInspectingAuthenticator<T> Construct(T config); } public class BasicAuthenticationInspectingAuthenticatorFactory : IHttpHeaderInspectingAuthenticator

问题 Aha, this question is all over stack overflow so I've already proceeded to add CallingConvention = CallingConvention.Cdecl which has worked just fine for other libraries I've had to import but in this case, nothing changes and it still fails with the same error message. The original code for this came out of a .net 3.5 project and works perfectly fine: [DllImport("Compiled DSP.dll")] private static extern int fnGetConfigParam(int nID, ref stParamInt pstParam); [DllImport("Compiled DSP.dll")]

问题 I am hosting WCF services in IIS. I have multiple hostname bindings set up in IIS for the site. However, when making requests to any of the non-default bindings, the correct url doesn't get reported by the OperationContext.IncomingMessageProperties.Via property. The URL that gets reported uses the default binding's hostname as the base, with same path and querystring. For example, assuming the following bindings: http://subfoo.services.myapp.com (first/default entry) http://subbar.services

问题 What is the fastest way to convert anonymous type to DataTable? Update: I want to get and populate DataTable from anonymous type. If reflection is neccesary, how can I to do it using reflection? 回答1: Found here: var result = from p in dataSource group p by p.City into cities select new { Property1 = cities.Key, Property 2= cities.Average(p => p.Age) }; dt.Columns.Add("Property1"); dt.Columns.Add("Property2"); foreach (var item in result) { dt.Rows.Add(item.Property1,item.Property2); } See

问题 Are there any caveats or short comings to using the new Task API in System.Threading.Task in ASP.NET hosted under IIS? I know prior to .NET 4.0 working with any of the ThreadPool actions inside of IIS was always recommended to be avoided. 回答1: Any caveats to using ThreadPool with IIS would still be valid using System.Threading.Task , as the Task API is just an additional layer of abstraction over System.Threading . For long-running tasks in the background, I use a ThreadPool inside a Windows

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: How to prevent ReflectionTypeLoadException when calling Assembly.GetTypes() I would like to get all the types in an assembly. However, I get the following error: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. The problem is the assembly I am getting the types from is referencing another assembly that is only available in the production environment, and not

问题 Following the sample for compression by Microsoft. I have added the encoder, encoder factory, and binding element to my solution. The difference from their sample is that we do not register our endpoints via the config file (requirement), but instead use a custom Service Host Factory. Service Host: protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses) { ServiceHost host = base.CreateServiceHost(serviceType, baseAddresses); if (host.Description.Endpoints.Count

问题 This is my first question after having used this place as my "go to" for a general opinion on what works/doesn't/why and the such. So let's try this out... With my limited experience I've been trying to get my head round the better ways of creating fixed data fields that I can refer back to throughout my program - things like end-user-viewable strings that I show repeatedly and other parameters that I'd like to keep constant and safe from change. I've kept my reused data in separate static

问题 I have a loop which, once simplified, looks like this: Dictionary<Tuple<A,G>,Decimal> results = new Dictionary<Tuple<A,G>,Decimal>(); foreach( A a in collectionA ) foreach( B b in collectionB ) results [Tuple.Create(a, (G)b.groupBy)] += (Decimal) Func(a, b); Is there a way I can replicate this result using a Linq query (with GroupBy , Sum and ToDictionary for example)? (as suggested in this answer to a previous question: Concise way to do a plus equals operation on a Dictionary element that

问题 Our current environment is .NET 3.5 SP1 but we're in the process of migrating to .NET4 and Visual Studio 2010. I would like to stick to using .NET 3.5 for the deployment/production environment however use Visual Studio and TFS 2010 for development, until the production environment is cleared for upgrade to .NET4. Is this possible (I assume yes :B), and how? What I have tried is changing the TargetFrameworkVersion in the project settings to "v3.5". However, I get a build failure due to the