wpf自定义路由事件,要求当收到数据后,计数加1
时间: 2023-11-26 08:05:10 浏览: 28
您好!针对您的问题,我可以提供以下代码示例来实现您所需的功能:
首先在自定义路由事件的源控件(比如说一个Button)中定义一个静态的计数器变量:
```csharp
public static int Counter = 0;
```
接着在该控件中定义自定义路由事件:
```csharp
public static readonly RoutedEvent CustomEvent = EventManager.RegisterRoutedEvent(
"CustomEvent",
RoutingStrategy.Bubble,
typeof(RoutedEventHandler),
typeof(YourSourceControl));
public event RoutedEventHandler CustomEvent
{
add { AddHandler(CustomEvent, value); }
remove { RemoveHandler(CustomEvent, value); }
}
```
在接收到数据的时候,触发自定义路由事件并对计数器进行加1的操作:
```csharp
private void OnDataReceived()
{
Counter++;
RoutedEventArgs args = new RoutedEventArgs(CustomEvent);
RaiseEvent(args);
}
```
最后,在事件处理程序中可以通过访问源控件的静态计数器变量来获取计数值:
```csharp
private void OnCustomEvent(object sender, RoutedEventArgs e)
{
int count = YourSourceControl.Counter;
// do something with the count value
}
```
这样,当您的控件接收到数据并触发自定义路由事件时,计数器的值就会自动加1。希望这些代码可以对您有所帮助!