将参数添加到按钮单击事件

Question

我有一个像这样的wpf按钮:

<Button Click="button1_Click" Height="23" Margin="0,0,5,0" Name="button1" Width="75">Initiate</Button>

我想将pass {Binding Code}作为参数传递给button1_click处理程序.
我该怎么做？

免责声明:WPF真的很新

Answer 1

简单方案:

<Button Tag="{Binding Code}" ...>

在您的处理程序中,将sender对象强制转换Button并访问该Tag属性:

var myValue = ((Button)sender).Tag;

更优雅的解决方案是使用WPF的命令模式:为希望按钮执行的功能创建命令,将Command绑定到Button的Command属性并绑定CommandParameter到您的值.

Answer 2

我也许并不是'Tag'的粉丝

<Button Click="button1_Click" myParam="parameter1" Height="23" Margin="0,0,5,0" Name="button1" Width="75">Initiate</Button>

然后通过属性访问.

 void button1_Click(object sender, RoutedEventArgs e)
 {
    var button = sender as Button;
    var theValue = button.Attributes["myParam"].ToString()
 }

Answer 3

那么有两种方法可以做到这一点:

转换DataContext

 void button1_Click(object sender, RoutedEventArgs e)
 {
    var button = sender as Button;
    var code = ((Coupon)button.DataContext).Code;
 }

或者使用Tag属性,它是一个通用的属性

 <Button Click="button1_Click" Height="23" Margin="0,0,5,0" Name="button1" Tag="{Binding Code}" />

然后

void button1_Click(object sender, RoutedEventArgs e)
{
    var button = sender as Button;
    var code = button.Tag;
}