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annotate MetroWpf/MetroWpf.Xaml/Converters/EnumBooleanConverter.cs @ 15:060f02cd4591

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author stevenh7776 stevenhollidge@hotmail.com
date Mon, 12 Mar 2012 23:05:21 +0800
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1 //http://stackoverflow.com/questions/397556/wpf-how-to-bind-radiobuttons-to-an-enum
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2
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3 using System;
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4 using System.Windows;
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5 using System.Windows.Data;
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6
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7 namespace MetroWpf.Xaml.Converters
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8 {
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9 [ValueConversion(typeof(Enum), typeof(Boolean))]
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10 public class EnumBooleanConverter : IValueConverter
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11 {
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12 public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
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13 {
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14 var parameterString = parameter as string;
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15 if (parameterString == null)
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16 return DependencyProperty.UnsetValue;
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17
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18 if (Enum.IsDefined(value.GetType(), value) == false)
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19 return DependencyProperty.UnsetValue;
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20
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21 object parameterValue = Enum.Parse(value.GetType(), parameterString);
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22
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23 return parameterValue.Equals(value);
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24 }
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25
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26 public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
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27 {
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28 var parameterString = parameter as string;
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29 if (parameterString == null)
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30 return DependencyProperty.UnsetValue;
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31
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32 return Enum.Parse(targetType, parameterString);
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33 }
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34 }
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35 }