support for .NET framework 3.5

Still have bugs
2019-01-21 00:43:10 +08:00
1 parent 5878039e21
commit 7d6b491f25
@@ -0,0 +1,52 @@
+using System;
+using System.Globalization;
+using System.Windows.Data;
+
+namespace HandyControl.Tools.Converter
+{
+    public class Long2FileSizeConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value == null) return Properties.Langs.Lang.UnknownSize;
+            if (value is long intValue)
+            {
+                if (intValue < 0)
+                {
+                    return Properties.Langs.Lang.UnknownSize;
+                }
+                if (intValue < 1024)
+                {
+                    return $"{intValue} B";
+                }
+                if (intValue < 1048576)
+                {
+                    return $"{intValue / 1024.0:0.00} KB";
+                }
+                if (intValue < 1073741824)
+                {
+                    return $"{intValue / 1048576.0:0.00} MB";
+                }
+                if (intValue < 1099511627776)
+                {
+                    return $"{intValue / 1073741824.0:0.00} GB";
+                }
+                if (intValue < 1125899906842624)
+                {
+                    return $"{intValue / 1099511627776.0:0.00} TB";
+                }
+                if (intValue < 1152921504606847000)
+                {
+                    return $"{intValue / 1125899906842624.0:0.00} PB";
+                }
+                return Properties.Langs.Lang.TooLarge;
+            }
+            return Properties.Langs.Lang.Unknown;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}