Update Demo

SqlSugar/ExpressionsToSql/Common/SugarParameter.cs

@@ -150,6 +150,10 @@ namespace SqlSugar
             get; set;
         }
 
+        /// <summary>
+        /// 如果类库是.NET 4.5请删除该属性
+        /// If the SqlSugar library is.NET 4.5, delete the property
+        /// </summary>
         public override DataRowVersion SourceVersion
         {
             get; set;