public Currency(Guid? vcurrencyUI = null)
    : base(vcurrencyUI)
{ }

我想使用new()约束这个类,但我得到这个错误：

‘Currency’ must be a non-abstract type with a public parameterless constructor in order to use it as parameter ‘T’ in the generic type or method …

如果我拆分构造函数一切正常：

public Currency(Guid? vcurrencyUI)
    : base(vcurrencyUI)
{ }
 
public Currency()
    : base()
{ }

为什么我需要拆分构造函数？