简单删除，返回成功/失败

new DBHelper<DTStudentModel>()
.Delete()
.Where(p => p.IdentityID == p.IdentityID)
.Execute(new { IdentityID = 1 });
-- 对应 SQL
delete from T_Student where ([T_Student].[IdentityID] = @IdentityID)
    

简单插入，返回影响行数

new DBHelper<DTStudentModel>()
.Delete()
.Where(p => p.IdentityID == p.IdentityID)
.AffectedRows(new { IdentityID = 1 });
-- 对应 SQL
delete from T_Student where ([T_Student].[IdentityID] = @IdentityID)