From d447950255e39a00a16466d7fe6e6d42a7c91eea Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 11 Aug 2020 17:59:44 +0800
Subject: Post list modified since now consider username change. And make all
 datetime utc.

---
 Timeline/Models/Converters/MyDateTimeConverter.cs | 51 +++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Timeline/Models/Converters/MyDateTimeConverter.cs

(limited to 'Timeline/Models/Converters/MyDateTimeConverter.cs')

diff --git a/Timeline/Models/Converters/MyDateTimeConverter.cs b/Timeline/Models/Converters/MyDateTimeConverter.cs
new file mode 100644
index 00000000..f125cd5c
--- /dev/null
+++ b/Timeline/Models/Converters/MyDateTimeConverter.cs
@@ -0,0 +1,51 @@
+using System;
+using System.ComponentModel;
+using System.Globalization;
+
+namespace Timeline.Models.Converters
+{
+    public class MyDateTimeConverter : TypeConverter
+    {
+        public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
+        {
+            return sourceType == typeof(string) || base.CanConvertFrom(context, sourceType);
+        }
+
+        public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
+        {
+            return base.CanConvertTo(context, destinationType);
+        }
+
+        public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
+        {
+            if (value is string text)
+            {
+                text = text.Trim();
+                if (text.Length == 0)
+                {
+                    return DateTime.SpecifyKind(DateTime.MinValue, DateTimeKind.Utc);
+                }
+
+                return DateTime.Parse(text, CultureInfo.InvariantCulture, DateTimeStyles.AdjustToUniversal | DateTimeStyles.AssumeUniversal);
+            }
+
+            return base.ConvertFrom(context, culture, value);
+        }
+
+        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
+        {
+            if (destinationType == typeof(string) && value is DateTime)
+            {
+                DateTime dt = (DateTime)value;
+                if (dt == DateTime.MinValue)
+                {
+                    return string.Empty;
+                }
+
+                return dt.ToString("s", CultureInfo.InvariantCulture) + "Z";
+            }
+
+            return base.ConvertTo(context, culture, value, destinationType);
+        }
+    }
+}
-- 
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