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annotate MetroWpf/MetroWpf.Xaml/Converters/IsStringNullOrWhitespaceConverter.cs @ 100:9b6855dc165e

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Updated System.Windows into Libs
author stevenhollidge <stevenhollidge@hotmail.com>
date Sat, 05 May 2012 23:04:16 +0100
parents 060f02cd4591
children
rev   line source
15
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1 
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2 namespace MetroWpf.Xaml.Converters
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3 {
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4 using System;
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5 using System.Windows.Data;
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6 using System.Globalization;
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7
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8 public class IsStringNullOrWhitespaceConverter : IValueConverter
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9 {
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10 #region IValueConverter Members
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11
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12 public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
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13 {
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14 var str = (string)value;
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15 bool ret = string.IsNullOrEmpty(str);
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16 if (!ret)
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17 {
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18 str = str.Trim();
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19 ret = string.IsNullOrEmpty(str);
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20 }
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21
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22 if ((string)parameter == "Inverse")
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23 {
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24 ret = !ret;
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25 }
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26
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27 return ret;
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28 }
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29
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30 public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
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31 {
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32 throw new NotSupportedException();
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33 }
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34
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35 #endregion
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36 }
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37 }