Optimized SqlServer Date format

Src/Asp.Net/SqlServerTest/Demo/Demo1_Queryable.cs

@@ -176,6 +176,7 @@ namespace OrmTest
             var test21 = db.Queryable<Order>().Where(it=>it.Id.ToString()==1.ToString()).Select(it => it.CreateTime.ToString("24")).First();
             var test22 = db.Queryable<Order>().Where(it => it.Id.ToString() == 1.ToString()).Select(it => SqlFunc.AggregateDistinctCount(it.CreateTime)).First();
             var test23 = db.Queryable<Order>().Where(it =>true).Select(it => new { x1 = it.CreateTime.ToString("yyyy-MM") ,it.CreateTime}).ToList();
+            var test24 = db.Queryable<Order>().Where(it => true).Select(it => new { x1 = it.CreateTime.ToString("yyyy-MM-dd _ HH _ mm _ ss "), it.CreateTime }).ToList();
             Console.WriteLine("#### Examples End ####");
         }
 

Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs

@@ -1006,6 +1006,10 @@ namespace SqlSugar
             {
                 return string.Format("CONVERT(varchar(100),convert(datetime,{0}), {1})", value, formatString);
             }
+            else if (IsSqlServer())
+            {
+                return string.Format("FORMAT({0},'{1}','en-US')", value, formatString);
+            }
             var parameter = new MethodCallExpressionArgs() { IsMember = true, MemberValue = DateType.Year };
             var parameter2 = new MethodCallExpressionArgs() { IsMember = true, MemberName = value };
             var parameters = new MethodCallExpressionModel() { Args = new List<MethodCallExpressionArgs>() { parameter2, parameter } };