wpf-mvvm的绑定、命令

以prism为例 mvvmlight类似
一、无参

public ICommand RefreshCommand { set; get; }
RefreshCommand = new DelegateCommand(this.Refresh);
<Button Command="{Binding RefreshCommand}">

二、有参
这种复杂点 我是用在datagrid控件中的button 参数是从CommandParameter中取

public ICommand EditCommand { set; get; }
EditCommand = new DelegateCommand<object>(t => Edit(t));

<Button Content="编辑" Width="25" Height="25" Background="Yellow" Foreground="White"
                                        CommandParameter="{Binding ID}"
                                        Command="{Binding DataContext.EditCommand,
                                                  RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=DataGrid}}"
                                            />

总结： ICommend定义 用DelegateCommand实例化 把方法作为Action 如果需要代参
就需要CommandParameter和RelativeSource