internal partial class Workspace:Base.ViewModelBase
    {

        #region property
        private Modles.FileFolderTree _current;

        //当前树节点(文件夹)
        public Modles.FileFolderTree Current
        {
            set 
            {
                if (value.Self.FC == Modles.FileClass.Folder)
                {
                    _current = value;
                    this.RaisePropertyChanged("Current");
                    this.InfCurrent = value.Self.FileFolder_Inf;  //显示详细信息
                }

            }
            get { return _current; }
        }#endregion

        #region Command

        public Base.DelegateCommand MarkCommand { set; get; }
        public Base.DelegateCommand OpenFileCommand { set; get; }
        #endregion

        #region Method
        /// <summary>
        /// 文件批注
        /// </summary>
        public void mark(object obj)
        {
            try
            {
                this.MarkFile = this.CurrentFile.Self;
            }
            catch (Exception ex)
            { }
        }

        /// <summary>
        /// 打开文件
        /// </summary>
        public void openfile(object obj)
        {
            try
            {
                this.OpenFile = this.CurrentFile.Self;
            }
            catch (Exception ex)
            { }

            Process pro = new Process();
            pro = Process.Start(@"E:\软件\photoshopcs5\Photoshop.exe",this.OpenFile.Path);
        }

        #endregion

    }

 <Style x:Key="filelistshow_listbox_style" TargetType="ListBox">
        <Setter Property="ItemContainerStyle">
            <Setter.Value>
                <Style TargetType="ListBoxItem">
                    <Setter Property="ContextMenu">
                        <Setter.Value>
                            <ContextMenu>
                                <MenuItem Header="批注" Command="{Binding MarkCommand}"></MenuItem>
                                <MenuItem Header="打开" Command="{Binding OpenFileCommand}"></MenuItem>
                            </ContextMenu>
                        </Setter.Value>
                    </Setter>
                </Style>
            </Setter.Value>
        </Setter>
        <Setter Property="ItemTemplate">
            <Setter.Value>
                <DataTemplate>
                    <Grid Width="100" Height="50" Margin="0 0 10 0">
                        <Grid.RowDefinitions>
                            <RowDefinition></RowDefinition>
                            <RowDefinition></RowDefinition>
                        </Grid.RowDefinitions>
                        <Image Source="{Binding Self.ICO}"></Image>
                        <TextBlock Foreground="#ffffff" HorizontalAlignment="Center" VerticalAlignment="Center"
                                           Text="{Binding Self.Text}" Grid.Row="1"></TextBlock>
                        <TextBlock></TextBlock>
                    </Grid>
                </DataTemplate>
            </Setter.Value>
        </Setter>
    </Style>