C# Constructor: How to Call and Use

1 year ago
Olivia Parker
1 minute

In C#, a constructor is a special method that is automatically called when creating an instance of a class. It is used to initialize the state of the object when a new object is created.

To invoke a constructor, you just need to use the new keyword to instantiate an object and pass the necessary parameters to the constructor. For example:

public class MyClass
{
    private int myValue;

    // 构造函数
    public MyClass(int value)
    {
        myValue = value;
    }

    public int GetMyValue()
    {
        return myValue;
    }
}

class Program
{
    static void Main()
    {
        // 调用构造函数来实例化对象
        MyClass obj = new MyClass(10);

        // 调用对象的方法
        int value = obj.GetMyValue();
        Console.WriteLine(value); // 输出：10
    }
}

In the example above, we use new MyClass(10) to call the constructor and instantiate a MyClass object, then call the GetMyValue() method to retrieve the object’s property value.

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