在.Net 4.0中从.Net 4.5绑定的延迟属性

public class MyClass
{
    private string _myProperty;

    public string MyProperty
    {
        get
        {
            if (_myProperty == null)
            {
                _myProperty = LoadMyProperty();
            }
            return _myProperty;
        }
    }

    private string LoadMyProperty()
    {
        // 在这里加载属性值
    }
}

public class MyClass
{
    private Lazy<string> _myProperty = new Lazy<string>(LoadMyProperty);

    public string MyProperty
    {
        get
        {
            return _myProperty.Value;
        }
    }

    private string LoadMyProperty()
    {
        // 在这里加载属性值
    }
}