Implemented update system

Converters/BoolToVisibilityConverter.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+
+namespace DebtMgr.Converters
+{
+    [ValueConversion(typeof(bool), typeof(Visibility))]
+    public class BoolToVisibilityConverter : IValueConverter
+    {
+        public Visibility TrueValue { get; set; }
+        public Visibility FalseValue { get; set; }
+
+        public BoolToVisibilityConverter()
+        {
+            // set defaults
+            FalseValue = Visibility.Hidden;
+            TrueValue = Visibility.Visible;
+        }
+
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return (bool)value ? TrueValue : FalseValue;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}