C# WPF 路由命令

下面是一个简单的投影转换小工具

通过路由命令实现在所有参数都正确输入的情况下，"确定" 按钮可用

// 定义与绑定路由命令 OkButton对象就是确定按钮
RoutedCommand OkButtonCommand = new RoutedCommand("ReprojectRaster", typeof(MainWindow));
OkButton.Command = OkButtonCommand;
CommandBinding commandBinding = new CommandBinding();
commandBinding.Command = OkButtonCommand;
commandBinding.CanExecute += OkButtonCommandBinding_CanExecute;
commandBinding.Executed += OkButtonCommandBinding_Executed; ;
this.CommandBindings.Add(commandBinding);

// 监听OkButton状态
private void OkButtonCommandBinding_CanExecute(object sender, CanExecuteRoutedEventArgs e)
{
    // 添加一系列条件代码
    if ........
    else if ........
 
    e.CanExecute = false; // OkButton显示为不可用转态
    e.CanExecute = true; // OkButton显示为可用转态
}

// 执行OkButton点击的功能
private void OkButtonCommandBinding_Executed(object sender, ExecutedRoutedEventArgs e)
{
   // 一系列数据处理代码
   ....
   e.Handled = true;
}