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C# 使用数据库列别名的例子
C# 使用数据库列别名的例子。查询数据库信息,定义了一个方法返回DataTable对象:
private DataTable GetMessage()
{
string P_Str_ConnectionStr = string.Format(//创建数据库连接字符串
@"server=WIN-GI7E47AND9RLS;database=db_TomeTwo;uid=sa;pwd=");
string P_Str_SqlStr = string.Format(//创建SQL查询字符串
@"SELECT 学生姓名 as 姓名,年龄 as 学生年龄,性别 as 学生性别 from tb_Student");
SqlDataAdapter P_SqlDataAdapter = new SqlDataAdapter(//创建数据适配器
P_Str_SqlStr, P_Str_ConnectionStr);
DataTable P_dt = new DataTable();//创建数据表
P_SqlDataAdapter.Fill(P_dt);//填充数据表
return P_dt;//返回数据表
}
- 2022-07-22 20:05:58下载
- 积分:1
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新三国多开代码 易语言的 提供给大家参考学习
新三国多开代码 易语言的 提供给大家参考学习-blive me
- 2022-01-25 21:41:54下载
- 积分:1
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Desktop
雅克比迭代法就是众多迭代法中比较早且较简单的一种,其命名也是为纪念普鲁士著名数学家雅可比。雅克比迭代法的计算公式简单,每迭代一次只需计算一次矩阵和向量的乘法,且计算过程中原始矩阵A始终不变,比较容易并行计算。(The jacobian iteration method is one of the earlier and simpler iteration methods, which is also named in honor of the famous Prussian mathematician jacoby. The calculation formula of jacobian iterative method is simple. Every iteration only needs to calculate the matrix and vector multiplication once, and the original matrix A is always the same in the calculation process, which is easier to calculate in parallel.)
- 2018-07-23 21:53:18下载
- 积分:1
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game
用matlab实现的一个打地鼠的游戏,建议大家下载后学习一下,可以学到关于图像移动,鼠标捕捉,figure等方面的实际操作(Using matlab to achieve a fight to control the game, we recommend that you download to learn about, you can learn about the image moves, mouse capture, figure and other aspects of the actual operation)
- 2013-05-22 19:52:12下载
- 积分:1
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多Agent技术在电力系统中的应用研究 多Agent技术在电力系统中的应用研究...
多Agent技术在电力系统中的应用研究 多Agent技术在电力系统中的应用研究-Multi-Agent Technology in Power System Agent technology in many power system studies many Agent Technology in Electric Power System
- 2022-03-23 22:16:48下载
- 积分:1
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智能温控器
利用温度变送器模拟量输入,控制电动阀的开度,从而调节水泵流量。(Using the analog input of temperature transmitter, the opening of the electric valve is controlled to regulate the flow rate of the pump)
- 2020-06-23 16:00:02下载
- 积分:1
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Visual C# 使用键盘控制窗体的移动
Visual C#使用键盘控制窗体的移动,创建窗体对象,设置窗体接收按键事件,定义一个标识窗体的变量,判断按键类型,判断后关闭本窗体。
private void Form1_Load(object sender, EventArgs e)
{
Frm_Main form1 = new Frm_Main();//创建窗体对象
form1.KeyPreview = true;//设置窗体接收按键事件
}
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
Point point = this.Location;//定义一个标识窗体的变量
switch (e.KeyData)//判断按键类型
{
case Keys.Up://当按键为上方向键时
point.Y -= 2;
break;
case Keys.Down://当按键为下方向键时
point.Y += 2;
break;
case Keys.Right://当按键为右方向键时
point.X += 2;
break;
case Keys.Left://当按键为左方向键时
point.X -= 2;
break;
case Keys.Escape://当按键为Esc键时
this.Close();//关闭本窗体
break;
default: break;
}
this.Location = point;
}
- 2022-03-13 23:48:13下载
- 积分:1
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cats-vs-dogs
机器学习中经典的猫狗大战比赛程序实现,基于vgg16网络训练完成(The implementation of the classical cat-dog contest program in machine learning based on vgg16 network training)
- 2019-03-20 11:27:25下载
- 积分:1
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国外的人才求职招聘最新版,找了很久的,还在调试中,旧版本说明如下PHP写的一个人力资源管理系统的源码:系统采用模块话的设计,此文件解压到php的环境下,直接访问
国外的人才求职招聘最新版,找了很久的,还在调试中,旧版本说明如下PHP写的一个人力资源管理系统的源码:系统采用模块话的设计,此文件解压到php的环境下,直接访问就可以,需要建立一个mysql数据库数据库名为orangeHRM,并建立一个用户。然后直接访问http://localhost/orangehrm就ok!-PHP write a human resources management system of Source : System is modular case design, This document to extract php environment, we can directly access, need to establish a database mysql database called orangeHRM, and the establishment of a user. Then directly on the visit http://localhost/orangehrm ok! -Job recruiting talent from abroad the latest version, look for a long time, and still debugging, the older versions of PHP are described below to write a human resources management system source code: if the system uses a modular design, unzip this file to the php environment , direct access could need to create a database named mysql database orangeHRM, and the establishment of a user. And then directly access http://localhost/orangehrm on ok!-PHP write a human resources management system of Source: System is modular case desi
- 2022-05-31 08:28:40下载
- 积分:1
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ENVI SARscape入门教程201709
insar图像理解书籍,基本原理,数据处理算法,基本应用适合初学者(Insar Image Understanding Books, Basic Principles, Data Processing Algorithms, Basic Applications for Beginners)
- 2020-06-21 05:40:02下载
- 积分:1