Add user case test

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

@@ -32,6 +32,7 @@ namespace OrmTest
         }
         public static void Init()
         {
+            UnitGridSave2.Init();
             Unitdfafa11.Init();
             UnitSelectN.Init();
             UnitSubqueryN.Init();

Src/Asp.NetCore2/SqlSeverTest/UserTestCases/UnitTest/UnitGridSave2.cs

@@ -0,0 +1,81 @@
+using SqlSugar; 
+using System; 
+using System.Collections.Generic; 
+using System.Linq; 
+using System.Text; 
+using System.Threading.Tasks; 
+
+namespace OrmTest
+{
+    internal class UnitGridSave2
+    {
+        public static void Init()
+        {
+            // Get a new database connection
+            // 获取一个新的数据库连接
+            SqlSugarClient db = NewUnitTest.Db;
+
+            // Initialize tables using CodeFirst
+            // 使用 CodeFirst 初始化表
+            db.CodeFirst.InitTables<Student>();
+
+            // Clear table data
+            // 清空表数据
+            db.DbMaintenance.TruncateTable<Student>();
+
+            // Insert two student records
+            // 插入两条学生记录
+            db.Insertable(new List<Student>() {
+               new Student() {Name= "jack",CreateTime=DateTime.Now},
+               new Student() {Name= "tom",CreateTime=DateTime.Now}
+            }).ExecuteReturnIdentity();
+
+            // Query all student records
+            // 查询所有学生记录
+            List<Student> getAll = db.Queryable<Student>().ToList();
+
+
+             
+            // Enable entity tracking for the list 'getAll'
+            // 启用对列表 'getAll' 的实体跟踪
+            db.Tracking(getAll); 
+
+
+
+
+            // Remove the first record
+            // 移除第一条记录
+            getAll.RemoveAt(0);
+
+            // Modify the name of the last record
+            // 修改最后一条记录的姓名
+            getAll[getAll.Count - 1].Name += "_Update";
+
+            // Add a new record
+            // 添加新记录
+            getAll.Add(new Student { Name = "NewRecord" });
+            // Add a new record
+            // 添加新记录
+            getAll.Add(new Student { Name = "NewRecord" });
+
+             
+            // Execute GridSave operation
+            // 执行 GridSave 操作
+            db.GridSave(getAll).ExecuteCommand();
+
+            // Query all students again
+            // 再次查询所有学生
+            var list = db.Queryable<Student>().ToList();
+        }
+
+        // Define the entity class 定义实体类
+        [SugarTable("UnitSaveTablea5")]
+        public class Student
+        {
+            [SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+            public int Id { get; set; }
+            public string Name { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+    }
+}