using ClientUI.Samples.ViewModels;

namespace ClientUI.Samples.Models
{
    public class PropertyFinder : ModelBase
    {
        public PropertyFinder()
        {

        }

        public bool EnableValidation { get; set; }

        private double _propertySize;

        public double PropertySize
        {
            get
            {
                return _propertySize;
            }
            set
            {
                if (_propertySize != value)
                {
                    _propertySize = value;

                    ClearError("PropertySize");

                    if (EnableValidation && (double.IsNaN(this.PropertySize) || this.PropertySize < 600.0))
                        SetError("PropertySize", "Property size must not be smaller than 600 sq ft.");


                    OnPropertyChanged("PropertySize");
                }
            }
        }
    }
}
            

using ClientUI.Samples.Models;

namespace ClientUI.Samples.ViewModels
{
    public class PropertyFinderViewModel: ValidationViewModelBase
    {
        private PropertyFinder _propertyFinder;

        // Constructor
        public PropertyFinderViewModel()
        {
            this.PropertyFinder = new PropertyFinder { PropertySize = 700 };
            this.PropertyFinder.EnableValidation = true;
        }

        // Views
        public PropertyFinder PropertyFinder
        {
            get { return this._propertyFinder; }
            set
            {
                if (this._propertyFinder != value)
                {
                    this._propertyFinder = value;
                    OnPropertyChanged("PropertyFinder");
                }
            }
        }
    }
}
            

<UserControl x:Class="ClientUI.Samples.Views.PropertyFinder"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:Intersoft="http://intersoft.clientui.com/schemas"
    xmlns:ViewModels="clr-namespace:ClientUI.Samples.ViewModels"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400">

    <UserControl.Resources>
        <ViewModels:PropertyFinderViewModel x:Key="PropertyFinderViewModel"></ViewModels:PropertyFinderViewModel>
    </UserControl.Resources>

    <Grid x:Name="LayoutRoot" Background="White" DataContext="{StaticResource PropertyFinderViewModel}">
        <Intersoft:FieldLabel Header="Select Size (in sq ft.): " HeaderWidth="150" VerticalAlignment="Top">
            <Intersoft:UXSliderBar Width="300" TickPlacement="BottomRight" HandlesVisibility="True" Minimum="500" Maximum="1000" LargeChange="100" SmallChange="10"
                                   Value="{Binding PropertyFinder.PropertySize, Mode=TwoWay, ValidatesOnDataErrors=True, ValidatesOnExceptions=True}"/>
        </Intersoft:FieldLabel>
    </Grid>
</UserControl>