reference

问题 I just had to downgrade my ASP.Net 4.5.2 application to ASP.Net 4.0. Of course this brings problems with it, like references that are not installed correct. I solved some of them already, but I can't get my head around an error: CS106 'RouteCollection' does not contain a definition for 'MapMvcAttributeRoutes' and no extension method 'MapMvcAttributeRoutes' accepting a first argument of type 'RouteCollection' could be found public class RouteConfig { public static void RegisterRoutes

问题 I am working on a project that revolves around EF. I have the core layers of my project separated into different projects. Unfortunately I constantly get errors that are happening because I am missing a reference to EntityFramework.SqlServer.dll in my project. Adding the .dll file to my build folder fixes this issue, but I want to solve it by a "using" statement in my code, however I cannot do that as I am missing a reference to Entity Framework in my project. I was wondering how do I add one

问题 I am not quiet sure about the concept of "passing by value" and "passing by reference" in c#. I think Passing by value mean : int i = 9; we pass int i into a method like: method(i) Passing by reference means exactly passing its location like : Class.method.variable and it will give out the value. Can anybody help me out?? 回答1: In simple terms... "Passing by value" means that you pass the actual value of the variable into the function. So, in your example, it would pass the value 9. "Passing

问题 It is possible to pass uninitialized object to a parent class like in the following example class C { public: C(int i): m_i(i) {}; int m_i; } class T { public: T(C & c): m_c(c) { }; C & m_c; }; class ST : public T { public: ST(): T(m_ci), m_ci(999) { }; C m_ci; }; In class T constructor, c is a reference to uninitialized object. If class T were using c object during construction, this would possibly lead to an error. But since it's not, this compiles and works fine. My question is - does it

问题 I have a VS2008 Reporting Services project (database: SQL Server 2008 RC2). This project has been updated from VS2005/SQL2005. I need to update the Report Viewer control to version 10.0.0.0. But when I install the Redistributable (http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=a941c6b2-64dd-4d03-9ca7-4017a0d164fd), it isn't added to the .NET-tab in the 'Add reference...' dialog! I can see the Microsoft.ReportViewer 8.0.0.0 and Microsoft.ReportViewer 9.0.0.0 in the

问题 I found an unusual sample in FCL code. This is method in System.IO.BinaryReader: protected virtual void Dispose(bool disposing) { if (disposing) { Stream copyOfStream = m_stream; m_stream = null; if (copyOfStream != null && !m_leaveOpen) copyOfStream.Close(); } m_stream = null; m_buffer = null; m_decoder = null; m_charBytes = null; m_singleChar = null; m_charBuffer = null; } What impact on the execution logic has 'copyOfStream'? 回答1: It's done so that m_stream will be set to null even if

问题 This question already has answers here : Is there any way to return a reference to a variable created in a function? (3 answers) Closed 2 years ago . As an exercise to learn Rust I decided to implement a Bit Vector library, with inspiration from std::vec::Vec for which methods to provide. I have the following code: extern crate num; use std::cmp::Eq; use std::ops::{BitAnd,BitOrAssign,Index,Shl}; use num::{One,Zero,Unsigned,NumCast}; pub trait BitStorage: Sized + BitAnd<Self, Output = Self> +

问题 I want to pass an array to an object and store a reference to this array. I want to be able to modify this array within this object and make sure that it's modified everywhere else. Here is what I am trying to accomplish (how the code doesn't work) class Foo { var foo : Array<Int> init(foo: Array<Int>) { self.foo = foo } func modify() { foo.append(5) } } var a = [1,2,3,4] let bar = Foo(a) bar.modify() print(a) // My goal is that it will print 1,2,3,4,5 My findings so far A) The array (by

问题 In C++ a pointer is a pointer to an address of memory where another variable is stored and in C# a reference is some how same. What is the difference between these two? 回答1: In C# the reference type will be automatically garbage collected when no longer needed. 回答2: For me, the concept is the same , or at least intended to be the same, but the actual use given, is not . When we talk about pointers or reference we are talking about a concept. This variable "points to" or its a "reference" to

问题 I need help on how to correctly add assembly in C# code. I start a blank project and trying to run the simple code below. but has referencing errors. I know by default system.dll is included under the references folder. so why is it still complain that "'System.Configuration is not been referenced"? Am I missing some manual steps? If so how do I do it? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Net