WPF CommandParameter的使用
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window5" Height="300" Width="300">
<Window.CommandBindings>
<CommandBinding Command="New" Executed="New_Execute" CanExecute="New_CanExecute"></CommandBinding>
</Window.CommandBindings>
<Grid>
<StackPanel>
<TextBox Name="txt"></TextBox>
<Button Name="newTeacher" Command="New" CommandParameter="Teacher">NewTeacher</Button>
<Button Name="newStudent" Command="New" CommandParameter="Student">NewStudent</Button>
<TextBlock Name="msg"></TextBlock>
</StackPanel>
</Grid>
</Window>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
namespace Wpf180706
{
/// <summary>
/// Interaction logic for Window5.xaml
/// </summary>
public partial class Window5 : Window
{
public Window5()
{
InitializeComponent();
}
private void New_Execute(object sender, ExecutedRoutedEventArgs e)
{
msg.Text = e.Parameter.ToString();
}
private void New_CanExecute(object sender, CanExecuteRoutedEventArgs e)
{
if (string.IsNullOrEmpty(txt.Text))
{
e.CanExecute = false;
}
else
{
e.CanExecute = true;
}
}
}
}