質問編集履歴
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コードの追加
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@@ -15,4 +15,92 @@
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② 明細以外の箇所をクリックすると、SelectedIndex = -1 とする
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できるのであれば、①のように解決したいと思っていますが、実装可能でしょうか？
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できるのであれば、①のように解決したいと思っていますが、実装可能でしょうか？
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--追記---
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これまでは、以下のようなビヘイビア（？）を使用して、ダブルクリックを検知してVMのコマンドを実行していました。
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```C#
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public class MouseDoubleClick
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{
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#region 依存関係プロパティ
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public static DependencyProperty CommandProperty =
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DependencyProperty.RegisterAttached("Command",
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typeof(ICommand),
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typeof(MouseDoubleClick),
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new UIPropertyMetadata(CommandChanged));
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public static DependencyProperty CommandParameterProperty =
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DependencyProperty.RegisterAttached("CommandParameter",
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typeof(object),
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typeof(MouseDoubleClick),
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new UIPropertyMetadata(null));
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#endregion
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#region イベントハンドラ
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/// <summary>
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///
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private static void OnMouseLeftDoubleClick(object sender, MouseButtonEventArgs e)
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{
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if (e.ChangedButton != MouseButton.Left) return;
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var control = sender as Control;
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var command = (ICommand)control.GetValue(CommandProperty);
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var commandParameter = control.GetValue(CommandParameterProperty);
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command.Execute(commandParameter);
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}
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#endregion
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#region メソッド
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/// <summary>
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///
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/// </summary>
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/// <param name="target"></param>
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/// <param name="value"></param>
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public static void SetCommand(DependencyObject target, ICommand value)
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{
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target.SetValue(CommandProperty, value);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="target"></param>
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/// <param name="value"></param>
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public static void SetCommandParameter(DependencyObject target, object value)
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{
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target.SetValue(CommandParameterProperty, value);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="target"></param>
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/// <returns></returns>
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public static object GetCommandParameter(DependencyObject target)
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{
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return target.GetValue(CommandParameterProperty);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="target"></param>
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/// <param name="e"></param>
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private static void CommandChanged(DependencyObject target, DependencyPropertyChangedEventArgs e)
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{
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var control = target as Control;
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if (control != null)
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{
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if ((e.NewValue != null) && (e.OldValue == null))
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{
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control.MouseDoubleClick += OnMouseLeftDoubleClick;
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}
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else if ((e.NewValue == null) && (e.OldValue != null))
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{
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control.MouseDoubleClick -= OnMouseLeftDoubleClick;
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}
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}
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}
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#endregion
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}
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```
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