using System; using System.Collections.Generic; using System.Globalization; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Data; namespace PDF_Master.DataConvert { public class LoginBordVis : IValueConverter { //用于轻会员输入错误变红显示 public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { if ((string)value == "") return Visibility.Collapsed; else return Visibility.Visible; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } } }