kenny的技术博客

摘要： LINQ: There is already an open DataReader associated with this Command which must be closed first 在Linq to SQL和Entity Framework，使用Linq查询数据的时候会出现错误：There is already an open DataReader associated with this Command which must be closed first 。解决方案：在数据库连接串上添加MultipleActiveResultSets=true。 阅读全文

摘要： 把图片作为按钮的背景来提交 阅读全文

摘要： 参考资料：http://sunxitao88.blog.163.com/blog/static/68314439200842882112105/这里主要介绍web项目中的用法1.修改AssemblyInfo.cs文件（Properties文件夹下面）加入以下代码[assembly: log4net.Config.DOMConfigurator(ConfigFile = "web.config", Watch = true)]2.新建log.txt文件（放在根目录下面）3.修改web.config文件，添加以下代码 4.运行代码usin... 阅读全文

摘要： 1.配置文件Employee.xml delete from Employee WHERE ID = #Id# insert into Employee (EMPLOYEE_NUMBER, FIRST_NAME,LAST_NAME,TITLE) values (?,?,?,?) update Employee set EMPLOYEE_NUMBER = #EmployeeNumber#,FIRST_NAME = #FirstName#, LAST_NAME = #LastName#,TITLE = #Title# w... 阅读全文

摘要： 参考资料 http://www.cnblogs.com/anderslly/archive/2007/09/07/ibatisinactionpreface.html1.实体类using System;using System.Collections.Generic;using System.Linq;using System.Web;namespace NIbatis.Entity{ public class Employee { #region private fields private int id; private int employeeNumber; private string 阅读全文

摘要： 1.数据定义using System;using System.Collections.Generic;using System.Web;using System.Linq;using System.Data.Linq;using System.Data.Linq.Mapping;namespace QuickStart{ [Table] public class Cat { private int catId; private string name; private char sex; private float weight; public Cat() { } [Column(IsDb. 阅读全文

摘要： 1、数据定义Book表using System;using System.Data.Objects;using System.Data.Objects.DataClasses;using System.Data.EntityClient;using System.ComponentModel;using System.Data.Entity;using System.ComponentModel.DataAnnotations;namespace EFTest.Models.Part2{ [Table("Book")] public class Book { [Key] p 阅读全文