WPF

Michael Sync wrote:

Do you think that it's okay for ViewModel have the interface of View

public class MyClass
{
  private List<int> _myList = new List<int>();
  public string AggregateList
  {
    get
    {
      if (_myList != null && _myList.Count > 0)
      {
        StringBuilder myString = new StringBuilder();
        foreach (int value in _myList)
        {
          sb.AppendFormat("{0},", value);
        }
        return sb.ToString().Substring(0, sb.ToString().Length - 2);
      }
      return string.Empty;
    }
    set
    {
      string[] values = value.Split(",");
      _myList.Clear();
      foreach (string item in values)
      {
        int output;
        if (int.TryParse(item, out output))
        {
          _myList.Add(output);
        }
      }
    }
  }
}

<ListBox x:Name="DemoList"> <br />
            <ListBox.ItemsPanel> <br />
                <ItemsPanelTemplate> <br />
                    <StackPanel Orientation="Horizontal" /> <br />
                </ItemsPanelTemplate> <br />
            </ListBox.ItemsPanel>   <br />
<DataTemplate> <br />
	<Grid><br />
<Grid.ColumnDefinitions><br />
<ColumnDefinition><br />
<ColumnDefinition><br />
</Grid.ColumnDefinitions><br />
</Grid><br />
<TextBox grid.column=0 Text1="{Binding integers}"/><br />
<TextBox grid.column=1 Text1=";"/><br />
</DataTemplate><br />
</ListBox>

protected override void OnRender(DrawingContext dc)
{
    dc.PushClip(new RectangleGeometry(new Rect(RenderSize)));
    dc.DrawGeometry(Background, new Pen(BorderBrush, BorderWidth), GetHandleGeometry());
    dc.Pop();
}

public StreamGeometry GetHandleGeometry()
    var result = new StreamGeometry();
    result.FillRule = FillRule.EvenOdd;
    using (StreamGeometryContext ctx = result.Open())
    {
        ctx.BeginFigure(new Point(s.Width, 0), true, false);
        ctx.ArcTo(new Point(s.Width - r, r), CS, 90, false, SweepDirection.Clockwise, true, true);
        ctx.LineTo(new Point(r + w, r), true, true);
        ctx.ArcTo(new Point(w, 2 * r), CS, 90, false, SweepDirection.Counterclockwise, true, true);
        .............
    }
    return result;
}