private void UserControl_Loaded(object sender, RoutedEventArgs e)
{
GeoPointItem item = this.GeoPointValue;
this.txtlat.Text = item.Latitude.ToString();
this.txtlon.Text = item.Longitude.ToString();
}
private void txtlon_TextChanged(object sender, TextChangedEventArgs e)
{
GeoPointItem item = this.GeoPointValue;
item.Longitude = Convert.ToDouble(txtlon.Text);
this.GeoPointValue = item;
}
//Actual convertion from string to GeoPointItem
public override object ConvertFrom(System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
if (value is string)
{
try
{
return(GeoPointItem.Parse(value as string));
}
catch (Exception ex)
{
throw new Exception(string.Format("Cannot convert '{0}' ({1}) because {2}", value, value.GetType(), ex.Message), ex);
}
}
return(base.ConvertFrom(context, culture, value));
}
//Actual convertion from GeoPointItem to string
public override object ConvertTo(System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (destinationType == null)
{
throw new ArgumentNullException("destinationType");
}
GeoPointItem gpoint = value as GeoPointItem;
if (gpoint != null)
{
if (this.CanConvertTo(context, destinationType))
{
return(gpoint.ToString());
}
}
return(base.ConvertTo(context, culture, value, destinationType));
}
