Add demo

Src/Asp.Net/SqlServerTest/a2_Sql.cs

@@ -1,16 +1,74 @@
-using System;
+using SqlSugar;
+using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace OrmTest
 {
     internal class _a2_Sql
     {
+        /// <summary>
+        /// 初始化 SQL 操作的示例方法。
+        /// Initializes example methods for SQL operations.
+        /// </summary>
         internal static void Init()
         {
-           
+            // 获取新的数据库连接对象
+            // Get a new database connection object
+            var db = DbHelper.GetNewDb();
+
+            // CodeFirst 初始化 ClassA 表
+            // CodeFirst initializes the ClassA table
+            db.CodeFirst.InitTables<ClassA>();
+            db.Insertable(new ClassA() { Name = Guid.NewGuid().ToString("N") }).ExecuteCommand();
+
+            // 1. 无参数查询 DataTable
+            // 1. Query DataTable without parameters
+            var dt1 = db.Ado.GetDataTable("SELECT * FROM Table_a2");
+
+            // 2. 带参数查询 DataTable（简化用法）
+            // 2. Query DataTable with parameters (simplified usage)
+            var dt2 = db.Ado.GetDataTable("SELECT * FROM Table_a2 WHERE id=@id AND name LIKE @name",
+                new { id = 1, name = "%Jack%" });
+
+            // 3. 带参数查询 DataTable（复杂用法）
+            // 3. Query DataTable with parameters (complex usage)
+            var parameters = new List<SugarParameter>
+            {
+                new SugarParameter("@id", 1),
+                new SugarParameter("@name", "%Jack%",System.Data.DbType.AnsiString)//DbType
+            };
+            var dt3 = db.Ado.GetDataTable("SELECT * FROM Table_a2 WHERE id=@id AND name LIKE @name", parameters);
+
+            // 4. 带参数查询 DataTable（结合用法）
+            // 4. Query DataTable with parameters (combined usage)
+            var dynamicParameters = db.Ado.GetParameters(new { p = 1, p2 = "A" });
+            var dt4 = db.Ado.GetDataTable("SELECT * FROM Table_a2 WHERE id=@p AND name=@p2", dynamicParameters);
+
+            // 原生 SQL 使用实体进行查询
+            // Native SQL query using an entity
+            List<ClassA> entities = db.Ado.SqlQuery<ClassA>("SELECT * FROM Table_a2");
+            List<ClassA> entities2 = db.Ado.SqlQuery<ClassA>("SELECT * FROM Table_a2 WHERE ID>@ID",new { ID=1});
+
+            // 原生 SQL 使用匿名对象进行查询
+            // Native SQL query using an anonymous object
+            List<dynamic> anonymousObjects = db.Ado.SqlQuery<dynamic>("SELECT * FROM Table_a2");
+
+            // 执行 SQL 命令（插入、更新、删除操作）
+            // Execute SQL commands (insert, update, delete operations)
+            db.Ado.ExecuteCommand("INSERT INTO Table_a2 (name) VALUES ( 'New Record')"); 
+        }
+
+        /// <summary>
+        /// 示例实体类。
+        /// Example entity class.
+        /// </summary>
+        [SugarTable("Table_a2")]
+        public class ClassA
+        {
+            [SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+            public int Id { get; set; }
+
+            public string Name { get; set; }
         }
     }
-}
+}