How do I generate a constructor from class fields using Visual Studio (and/or ReSharper)?

Question

I\'ve gotten accustomed to many of the Java IDEs (Eclipse, NetBeans, and IntelliJ IDEA) providing you with a command to generate a default constructor for a class based on t

Answer 1

C# added a new feature in Visual Studio 2010 called generate from usage. The intent is to generate the standard code from a usage pattern. One of the features is generating a constructor based off an initialization pattern.

The feature is accessible via the smart tag that will appear when the pattern is detected.

For example, let’s say I have the following class

class MyType { 

}

And I write the following in my application

var v1 = new MyType(42);

A constructor taking an int does not exist so a smart tag will show up and one of the options will be "Generate constructor stub". Selecting that will modify the code for MyType to be the following.

class MyType {
    private int p;
    public MyType(int p) {
        // TODO: Complete member initialization
        this.p = p;
    }
}