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  1. Add Mixin support

    Composition is always a pain when we have to bind all method from interface to object that really implement it

    The code often looks like messy and complex for nothing.

    Maybe this Jon Skeet's idea could solve this:
    http://stackoverflow.com/a/255621

    8 votes
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      0 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
    • C# Feature Request: "Key" Fields in Anonymous Types

      In VB.NET I'm used to doing things like this when creating anonymous types:

      Dim prod1 = New With {
      Key .Name = "paperclips",
      Key .Price = 1.29,
      .OnHand = 423
      }

      It would be useful for this feature to exist in C#.

      8 votes
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        0 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
      • Add a Feature to Code Editor to provide live hints for better coding..

        Add a live Code Intellisence feature for better coding.
        rewriting the syntax and find un used variables with color highlighting
        syntax replaces and exceptions..

        7 votes
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          0 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
        • Add c++ const/mutable equivalent like in C++ into .NET

          1)
          When develop common libraries it is hard to protect data from 3rd side modifications.
          It is require deep copy what sometimes not acceptable (due to performance or memory issues),
          In native C++ was really cool thing: const/mutable modifiers for classes, functions and function parameters.
          It should be really nice if it will be added into one of next version of C#.

          2)
          Sometimes it is cool to mark some variable as final (to notice that it shall not be modified in rest of a function.
          In C++ was great thing const for variables in methods.
          It is also highly…

          7 votes
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            0 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
          • C#/VB.NET/F# should support Logic Programming

            C# should implement Logic Programming, similar to P# (Prolog for .NET).

            This programming paradigm will allow implicit knowledge representation and problem solving by logical induction.

            A simple example is programming a sudoku game, where the logic is represented by constraints (constraints).
            Other uses are machine learning (inductive logic) and mathematical frameworks (functional logic).

            http://en.wikipedia.org/wiki/Logic_programming

            7 votes
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              2 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
            • Add a new "View" option to ListView.

              VerticalList

              ListBox lacks functionality and ListView is the next best thing. The only problem is the fact that if I want a vertical list, I have to put it in details mode, add a column and then set HeaderStyle to none.

              Wouldn't it be better to just have a vertical list option?

              7 votes
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                0 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
              • Value arrays with constant length

                Now you only can create an array with an extra indirection, because arrays are objects, and you access it through that reference. An array that is **** out in memory like in C++ would be pleased, it would mean much in performance in some cases. (Not just because of the lack of the extra indirection but it could be **** in memory right next to its related datas.)

                now: int[] playerPoints=new int[4];
                desired sg. like: int[4] playerPoints; // where "playerPoints" is not of a reference type, but a value type

                7 votes
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                  2 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                • Add const keyword to method/parameter signatures in C# (Similar to C++?)

                  Add support for a const keyword that can be applied to method parameters,

                  e.g. public void MyMethod(const MyClassA myInstance);

                  It would prevent any state changes to MyClassA and any instances referenced by MyClassA for the life time of the method invocation.

                  This would inform clients at compile time whether a method is likely to be corrupted or changed.

                  I believe this is similar to how the const keyword behaves in C++?

                  7 votes
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                    0 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                  • Add a programming model for Regions

                    Regionizer is an open source Visual Studio 2010 package (will be converted soon to 2012) that formats code into regions;

                    I have been told that Regions do not have direct object model in the DTE, that the values are stored in the .suo file for each user.

                    Please allow a programmable way to collapse all regions.

                    7 votes
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                      1 comment  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                    • Allow exclusion of some namespaces from remove and sort unused usings

                      Allow exclusion of some namespaces from remove and sort unused usings. I like to keep my usings / imports minimal but would prefer to always have System and System.Linq for example. Giving me an exclusion list would give me this functionality. Also the ability to set remove and sort unused using to happen on file save would be useful.

                      7 votes
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                        1 comment  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                      • C#, official access to private members...

                        Official access to private members to avoid Reflection calls and Expression compilations in real world C# applications.
                        Please check the attachment.
                        Regards from Germany
                        Christian Ohle

                        7 votes
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                          1 comment  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                        • Improvement to c# to add the ability to implement a new interface for any non-sealed class

                          Add the ability to implement a new interface for any non-sealed class; in addition to extension methods have extension interfaces. The google Go language already has that. For instance if I could add the IComparable<> and IComparable interfaces to Regex Match I could add Match instances to a Sop.Collections.Generic.BTree.BTreeDictionary

                          7 votes
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                            0 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                          • Allow intellisense in C# Preprocessor Directives

                            When working with preprocessor directives, you don't have intellisense in some conditional directive parts.
                            ( http://msdn.microsoft.com/en-us/library/ed8yd1ha.aspx )

                            When working in Debug mode:

                            #if debug
                            // intellisense works here
                            #else
                            // no intellisense here when typing
                            #endif

                            It would be great if we could have intellisense here.

                            7 votes
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                              0 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                            • Add a warning when promoting the result of integer division to a real

                              (Also applies to C++)

                              I find a very common source of annoying and sometimes difficult bugs is forgetting that integer division truncates the fractional component even when the result is being promoted to a real. As a simplistic example:

                              int a = 5;
                              double b = a / 2;

                              Mathematically one expects b=2.5 but in fact this will result in b=2.0. Of course, one can correct this by instead simply using:

                              double b = a / 2.0;

                              However, I wish I had a dollar for every time I forgot to do this.

                              It would be really nice if this general…

                              7 votes
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                                1 comment  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                              • Support #pragma mark

                                Support the use of the #pragma mark directive to display labels and separators in function pop-up menus. This is particularly useful in external editors that scan for this.

                                7 votes
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                                  2 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                                • Generic nullable constraint

                                  Allow constraining generic type parameter to be nullable (class or Nullable), eg.:

                                  class Foo<T> where T : null {}

                                  new Foo<string>(); // compiles
                                  new Foo<int?>(); // compiles
                                  new Foo<int>(); // should not compile

                                  7 votes
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                                    0 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                                  • Dynamic generic calls and type conversions

                                    Let C# do:
                                    1. dynamic generic calls.
                                    2. dynamic type conversions.

                                    Example:

                                    public void Method(object a)
                                    {
                                    int r = ExternalGenericFunc < a.GetType() > ( // dynamic generic call.
                                    (a.GetType())a // dynamic type conversion.
                                    );
                                    }

                                    // In another DLL, in a non modifiable code:
                                    public int ExternalGenericFunc<T>(T data)
                                    {
                                    return ...; // do something on data.
                                    }

                                    7 votes
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                                      1 comment  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                                    • inline anonymous enum

                                      I would to use inline anonymous enums with C#
                                      For example instead writing:

                                      public class PutPaySheetRequest
                                      {
                                      public PutPaySheetMode Mode { get; set; }
                                      public enum PutPaySheetMode { Live, Test };
                                      }

                                      I would write:

                                      public class PutPaySheetRequest
                                      {
                                      public enum {Live,Test} Mode { get; set; }
                                      }

                                      7 votes
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                                        2 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                                      • Anonymous type definition

                                        Allow c# to define types in inline way. For example I have a web api action that returns a Dto. I have to define action as:

                                        public class Dto
                                        {
                                        public int Key {get; set;}
                                        public Group Value {get; set;}
                                        }

                                        action:
                                        public Dto GetDto()
                                        {
                                        ...
                                        }

                                        I suggest to write action method as:

                                        public {int Key; Group Value;} GetDto()
                                        {
                                        ...
                                        return new {Key = key, Value = group};
                                        }

                                        Also C# can defer type from action method. So this code can be valid:

                                        public anonymous GetDto()
                                        {
                                        ...
                                        return new {Key = key, Value = group};
                                        }

                                        7 votes
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                                          0 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Provide a keyword to restrict accessing a member function if the calling class does not implements specific interface in .Net (C#)

                                          Provide a keyword to restrict accessing a member function if the calling class does not implements specific interface in .Net (C#)

                                          For example:
                                          The class which implements IProfessor only can access IStudent.SetGrade method. If other class try to access, then Compiler should show error.

                                          7 votes
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                                            0 comments  ·  Languages - C#  ·  Flag idea as inappropriate…  ·  Admin →
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