first edit

XLIMS.MVVM/Converters/BoolConverter.cs

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+using System;
+using System.Windows.Data;
+using System.Globalization;
+
+namespace XLIMS.MVVM.Converters
+{
+    [ValueConversion(typeof(Boolean), typeof(String))]
+    public class BoolConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            try
+            {
+                Boolean data = (Boolean)value;
+                return data;
+            }
+            catch { return value; }
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            string strValue = value.ToString();
+            Boolean resultData;
+            if (Boolean.TryParse(strValue, out resultData))
+            {
+                return resultData;
+            }
+            return value;
+        }
+    }
+}