Update demo

Src/Asp.NetCore2/SqlSeverTest/UserTestCases/UnitTest/UValidate.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest
+{
+    public class UValidate
+    {
+        public static void Check(object a, object b, object name)
+        {
+            if (a?.ToString()?.Trim() != b?.ToString()?.Trim())
+            {
+                throw new Exception(name + " error");
+            }
+        }
+    }
+}