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Error :Request header field Content-Type is not allowed by Access-Control-Allow-Headers

...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
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ASP.NET MVC Performance

I found some wild remarks that ASP.NET MVC is 30x faster than ASP.NET WebForms. What real performance difference is there, has this been measured and what are the performance benefits. ...
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Warning: Found conflicts between different versions of the same dependent assembly

I am currently developing a .NET application, which consists of 20 projects. Some of those projects are compiled using .NET 3.5, some others are still .NET 2.0 projects (so far no problem). ...
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Where does Console.WriteLine go in ASP.NET?

... If you look at the Console class in .NET Reflector, you'll find that if a process doesn't have an associated console, Console.Out and Console.Error are backed by Stream.Null (wrapped inside a TextWriter), which is a dummy implementation of Stream that basically ...
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Read and parse a Json File in C#

... How about making all the things easier with Json.NET? public void LoadJson() { using (StreamReader r = new StreamReader("file.json")) { string json = r.ReadToEnd(); List<Item> items = JsonConvert.DeserializeObject<List<Item>>(json)...
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Will Dart support the use of existing JavaScript libraries?

... use existing JavaScript code with your Dart app. Learn more here: https://www.dartlang.org/articles/js-dart-interop/ share | improve this answer | follow | ...
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XmlSerializer giving FileNotFoundException at constructor

...e type will just use the already generated DLL. UPDATE: Starting from .NET 4.5, XmlSerializer no longer performs code generation nor does it perform compilation with the C# compiler in order to create a serializer assembly at runtime, unless explicitly forced to by setting a configuration file s...
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What are the benefits of using C# vs F# or F# vs C#? [closed]

..., imperative algorithms) than a functional programming language, that the .NET-Framework it uses is designed imperatively and that it's more widespread. Furthermore you can have F# and C# together in one solution, so you can combine the benefits of both languages and use them where they're needed. ...
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System.BadImageFormatException: Could not load file or assembly [duplicate]

...ation. Look for the 32-bit version of the tool here: C:\Windows\Microsoft.NET\Framework\v4.0.30319 and it should install your 32-bit application just fine. share | improve this answer | ...
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What is boxing and unboxing and what are the trade offs?

...generic collections can't contain unboxed values. Generic collections in .NET can hold unboxed values with no penalties. Where Java's generics are only used for compile-time type checking, .NET will generate specific classes for each generic type instantiated at run time. Java and Haskell have un...