class-library

I am developing a simple class library project, which will give me a dll. I wanted a particular value to be read from a config file. So I have added an App.config file to my project. <?xml version="1.0" encoding="utf-8" ?> <configuration> <appSettings> <add key="serviceUrl" value="test value" /> </appSettings> </configuration> Above is my App.config file, and now I am trying to read it as following string strVal = System.Configuration.ConfigurationManager.AppSettings["serviceUrl"]; But I am not getting any value in my string variable. I had done this for a web application in a similar way and

The problem: Consider the following floats[]: d[i] = 1.7 -0.3 2.1 0.5 What I want is an array of int[] that represents the order of the original array with indices. s[i] = 1 3 0 2 d[s[i]] = -0.3 0.5 1.7 2.1 Of course it could be done with a custom comparator, a sorted set of custom objects, or by simply sorting the array and then searching for the indices in the original array (shudder). What I am in fact looking for is the equivalent for the second return argument of Matlab's sort function . Is there an easy way to do that (<5 LOC)? May there be a solution that does not need to allocate a new

While disassembling the .Net Source Code using Reflector, I came upon the Equals implementation in the Object Class and it refers to bool InternalEquals(object objA, object objB); Which again refers to internal static extern bool InternalEquals(object objA, object objB); I am now confused regarding where to find the implementation of this InternalEquals(object objA, object objB) function and how is it using this function and in which .Net assembly is this function defined and also if each and everything is written from scratch for the .Net Source Code, then why am I unable to find this

I am currently moving code from my app_code folder to a class library. I have tagged several methods with [System.Web.Script.Serialization.ScriptIgnore] attributes. My class library cannot see this namespace. My add references dialog cannot see this namespace. How do I properly use this tag from a class library? Here is the error: The type or namespace name 'ScriptIgnoreAttribute' could not be found (are you missing a using directive or an assembly reference?) M4N The ScriptIgnoreAttribute class is in the System.Web.Extensions.dll assembly (Located under Assemblies > Framework in the VS

I want to make a Class Library (.NET Standard) and I'm using System.Drawing, but I get the error: CS0246 C# The type or namespace name 'Bitmap' could not be found (are you missing a using directive or an assembly reference?) I'm using .NET Standard 2.0. Update As of last month (May 2018), Microsoft have a production release (previously it was preview/RC) of System.Drawing.Common , a NuGet package which supersedes both versions of the CoreCompat.System.Drawing package. This should be used going forwards. For now you can use the CoreCompat.System.Drawing nuget package. We've been using it in

I hear the whole day the terms class library, base class library, Framework, ... What highlights a framework and what a base class library? The distinguishing feature between a class library and a software framework is that in a framework, the flow of control is not determined by the user´s code, but by the framework. This is also known as Hollywood principle (don´t call us, we call you). By the way, there is also a nice Wikipedia article on this topic. You use a class library in writing your code, but you code within a framework. The term "framework" is meant to invoke a sense of "being