16 lines
628 B
C#
16 lines
628 B
C#
using System.Globalization;
|
|
using System.Windows;
|
|
using System.Windows.Data;
|
|
|
|
namespace Store.Management.Framework.Converters;
|
|
|
|
/// <summary>空字符串或 null 显示占位内容，其他值折叠；仅用于单向绑定。</summary>
|
|
public sealed class StringNullOrEmpty2VisibilityConverter : IValueConverter
|
|
{
|
|
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
|
|
=> value is null || value is string { Length: 0 } ? Visibility.Visible : Visibility.Collapsed;
|
|
|
|
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
|
|
=> Binding.DoNothing;
|
|
}
|