Question

I have this WPF slider:

<Slider Height="22" HorizontalAlignment="Left" Width="100" TickPlacement="BottomRight" AutoToolTipPlacement="BottomRight" TickFrequency="1" Minimum="10" Maximum="110" Value="{Binding Path=Zoom, Mode=TwoWay}" Ticks="100"/>

and my c# code behind

public object Zoom
{
    get { return _zoom.ToString() }
    set
    {
        try
        {
            string zoom = value.ToString().Replace(",", ".");
            if (zoom.EndsWith(" %"))
            {
                _zoom= System.Convert.ToInt32(System.Convert.ToInt64(zoom));
            }
            OnPropertyChanged("CurrentZoom");
        }
        catch (FormatException ex)
        {
            //TODO: =)
        }
    }
}

how is it possible that only integers can be stored in _zoom? I don’t need a decimal number.

for example:

zoom is “13,99999”

_zoom should be 13 (int)

_zoom= System.Convert.ToInt32(System.Convert.ToInt64(zoom));

so i get this error:

Value was either too large or too small for an Int32.

whats wrong?

Answer 1

_zoom = (int)Math.Round(System.Convert.ToDouble(zoom));