Command 传参的几种方式

Command可以根据CommandParameter传参

关键代码

public ICommand SubmitCommand => _submitCommand;
private RelayCommand _submitCommand = new RelayCommand(new Action<object>(ShowMessage));
private static void ShowMessage(object obj)
{
    MessageBox.Show(obj.ToString());
}

<TextBox Name="textBox1"></TextBox>
<Button Command="{Binding SubmitCommand}" CommandParameter="{Binding ElementName=textBox1,Path=Text}" Content="提交参数"></Button>

也可以这样绑定

<Label Grid.Row="0">姓名：</Label>
<TextBox Name="name" Grid.Row="0" Grid.Column="1" Text="{Binding Person.Name}"></TextBox>
<Label Grid.Row="1">年龄：</Label>
<TextBox Name="age" Grid.Row="1" Grid.Column="1" Text="{Binding Person.Age}"></TextBox>
<Button Grid.Row="2" Grid.Column="0" Grid.ColumnSpan="2" Command="{Binding SubmitCommand}" CommandParameter="{Binding Person}" Content="提交参数"></Button>

示例代码

https://github.com/zLulus/NotePractice/tree/dev3/WPF/WpfDemo/Command

Command与Click的关系

Command用于后台操作，click用于前台展示、交互，可以共存