How Can I Best Initialize C# Auto-Properties?

C# automatic attribute initialization: Explore the best method

When using C# automatic attributes, it is often necessary to allocate the initial value of various scenarios. In the past, developers must use the constructor or the old attribute syntax to achieve this.

Use the constructor

This method involves creating a constructor in a class and initialized automatic properties in it. For example:

class Person
{
    public Person()
    {
        Name = "初始名称";
    }
    public string Name { get; set; }
}

Use traditional attribute grammar

Another method is to use traditional attribute grammar, which involves explicitly declare a private field and define the Getter and Setter method for attributes. The initial value can be allocated in the setter method, as shown below:

private string name = "初始名称";
public string Name
{
    get
    {
        return name;
    }
    set
    {
        name = value;
    }
}

Simplified method: C# 6.0 and higher versions

However, with the introduction of C# 6.0, a more convenient and more concise initialization automatic attribute appears. Starting from C# 6.0 and higher versions, the initial value can be set directly in the attribute declaration. The grammar of this method is as follows: <法>

This method provides a direct and elegant method for the initial value of the automatic attribute allocation, making it the preferred method in modern C# development.

public int X { get; set; } = x; // C# 6 或更高版本

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