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SZMCToolkit.RevitAddins/WpfAppTest/NullableToVisibilityConverter.cs

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2026-02-23 10:28:26 +08:00
using System.Globalization;
using System.Windows;
using System.Windows.Data;
using System;
namespace WpfAppTest.Converter
{
public class NullableToVisibilityConverter : IValueConverter
{
/// <summary>
/// The visibility value if the argument is null.
/// </summary>
public Visibility NullValue { get; set; }
public Visibility NotNullValue { get; set; }
/// <summary>
/// Creates a new <see cref="NotNullToVisibilityConverter" />.
/// </summary>
public NullableToVisibilityConverter()
{
NullValue = Visibility.Collapsed;
NotNullValue = Visibility.Visible;
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
return value == null ? NullValue : NotNullValue;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
return Binding.DoNothing;
}
}
}