29 lines
870 B
C#
29 lines
870 B
C#
using System;
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using System.Collections;
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using System.Globalization;
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using System.Windows;
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using System.Windows.Data;
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namespace DMS.WPF.Converters
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{
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/// <summary>
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/// 当集合为空时返回Visibility.Visible，否则返回Visibility.Collapsed
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/// </summary>
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public class EmptyCollectionToVisibilityConverter : IValueConverter
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{
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public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
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{
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if (value is ICollection collection)
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{
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return collection.Count == 0 ? Visibility.Visible : Visibility.Collapsed;
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}
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return Visibility.Visible;
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}
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public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
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{
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throw new NotImplementedException();
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}
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}
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} |