将以往的代码复制到代码库

Future.Contract/Markups/LengthConvert.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Markup;
+
+namespace Future.Contract
+{
+    /// <summary>
+    /// 实现Int向GridLength的转化
+    /// </summary>
+    public class LengthConverter : MarkupExtension
+    {
+        public override object ProvideValue(IServiceProvider serviceProvider)
+        {
+            return 0;
+        }
+    }
+}