2021-10-06 WPF上位机 59-MvvmLight框架命令绑定和消息机制

Posted 2021-10-24 微软MVP Eleven

MvvmLight框架对象RelayCommand

1、依赖命令主要功能介绍
RelayCommand
RelayCommand:只能转换引用类型，值类型慎用

private ICommand _testCommand;

public ICommand TestCommand
{
   
    get
    {
   
        if (_testCommand == null)
            _testCommand = new RelayCommand(