You can’t do this. sum is being shared across you parallel threads. You need to make sure that the sum variable is only being accessed by one thread at a time: // DON’T DO THIS! Parallel.For(0, data.Count, i => { Interlocked.Add(ref sum, data[i]); }); BUT… This is an anti-pattern because you’ve effectively serialised the loop … Read more
If you only need to do that, you should look at ExpandoObject. If you need to do that and still use DynamicObject, you will need to write code to remember property values, basically… which you could potentially do with an embedded ExpandoObject. It’s not clear to me what you want to do with this object … Read more
I found the answer here: http://forums.silverlight.net/forums/p/149264/377212.aspx MVC recognizes the MetaDataType attribute, but other projects do not. Before validating, you need to manually register the metadata class: TypeDescriptor.AddProviderTransparent( new AssociatedMetadataTypeTypeDescriptionProvider(typeof(Persona), typeof(Persona_Validation)), typeof(Persona)); ValidationContext context = new ValidationContext(p, null, null); List<ValidationResult> results = new List<ValidationResult>(); bool valid = Validator.TryValidateObject(p, context, results, true);
Got this from Bing. Seems Microsoft has removed some features from the core framework and added it to a separate optional(?) framework component. To quote from MSDN (http://msdn.microsoft.com/en-us/library/cc656912.aspx) The .NET Framework 4 Client Profile does not include the following features. You must install the .NET Framework 4 to use these features in your application: * … Read more
The problem is that you’re specifying both the HttpGet and HttpPost attributes. If you leave both of them off, the action accepts both POST and GET requests. My guess is that the HttpGet and HttpPost attributes don’t signal to MVC to allow the corresponding request type, but to deny the opposite type. So by including … Read more
Actually there’s 2 main reasons that the default project type for WPF applications is x86. Intellitrace debugging only works with x86 and that would look pretty bad if the default project templates didn’t work with one of their star features. Many developers were still not aware of the fact that their AnyCPU exe’s would run … Read more
I would personally prefer to use List<string>: No need to remember one specific type just for strings It implements the generic IEnumerable<T> rather than just IEnumerable, and thus supports LINQ It’s supported in SilverLight It’s more idiomatic for most developers (IMO) I would be really surprised to find StringCollection to be significantly faster than List<string> … Read more
The best would probably be to recompile your class library for .NET 4.0 in Visual Studio 2010 (ie. opening up the project, converting it, and changing the target framework.) If you can’t, or won’t, do that, then you can try adding the following to your app.config file for your .NET 4.0 application: <startup useLegacyV2RuntimeActivationPolicy=”true”> <supportedRuntime … Read more
In IIS, enable .NET 4. Here is image:
I know this is an old question, but if anyone else lands here using EF Code First as I am, my issue was in the fluent mappings: protected override void OnModelCreating(DbModelBuilder modelBuilder) { base.OnModelCreating(modelBuilder); modelBuilder.Entity<Parent>() .HasOptional(a => a.Child) /* LEFT OUTER JOIN */ .WithMany() .HasForeignKey(a => a.ChildId); } is translated as a LEFT OUTER JOIN … Read more