MenuItem上的WPF ComamndBinding帮助
WPF的新用户......正在阅读这个带有Bindings per-Tab的WPF路由命令，并且接近它正在运行。
MenuItem被禁用，直到我的RuleTab（tabitem）被选中，而不是弹出我的查找对话框，它在菜单上显示System.Windows.Input.CommandBinding。我究竟做错了什么？
XAML：
<MenuItem Header="_Find..." IsEnabled="{Binding ElementName=RuleTab, Path=IsSelected}" >
<CommandBinding Command="Find" Executed="ExecuteFind" CanExecute="Find_CanExecute" ></CommandBinding>
</MenuItem>
private void ExecuteFind(object sender, ExecutedRoutedEventArgs e)
{
// Initiate FindDialog
FindDialog dlg = new FindDialog(this.RuleText);
// Configure the dialog box
dlg.Owner = this;
dlg.TextFound += new TextFoundEventHandler(dlg_TextFound);
// Open the dialog box modally
dlg.Show();
}
void dlg_TextFound(object sender, EventArgs e)
{
// Get the find dialog box that raised the event
FindDialog dlg = (FindDialog)sender;
// Get find results and select found text
this.RuleText.Select(dlg.Index, dlg.Length);
this.RuleText.Focus();
}
private void Find_CanExecute(object sender, CanExecuteRoutedEventArgs e)
{
e.CanExecute = RuleTab.IsSelected;
}
<Window.CommandBindings>
<CommandBinding Command="Find" Executed="ExecuteFind" CanExecute="Find_CanExecute" ></CommandBinding>
</Window.CommandBindings>
没有找到相关结果
已邀请:
1 个回复
冲汉
属性，可能还有一个和（指向我期望的TabItem）。 例如，我在ContextMenu中有一个MenuItem，我想要在ContextMenu的上下文（放置目标）上触发命令：<MenuItem Header="View" ToolTip="Open the Member Central view for this member" Command="{x:Static local:Commands.CustomerViewed}" CommandParameter="{Binding Path=PlacementTarget.DataContext, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ContextMenu}}}" CommandTarget="{Binding Path=PlacementTarget, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ContextMenu}}}" />