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Abstract factory example. A simple description of the abstract factory C# Code
抽象工厂的示例。一个简单的描述抽象工厂的C#代码-Abstract factory example. A simple description of the abstract factory C# Code
- 2022-03-10 20:28:42下载
- 积分:1
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c8051f340 testpanel c code
c8051f340 控制面版编程
学习单片机
很有帮助
- 2023-01-22 02:25:03下载
- 积分:1
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C# 通过SqlReader HasRows判断指定表中是否有数据
本例主要是判断指定的数据库数据表中是否有数据,这里使用了通过判断HasRows的返回值来判断,若返回值为真,则有数据,反之则无数据,最后用MessageBox.Show显示判断结果,完整的过程:
//实例化SqlConnection变量conn
SqlConnection conn = new SqlConnection("server=.;database=db_14;uid=sa;pwd=");
conn.Open();//打开连接
//创建一个SqlCommand对象
SqlCommand cmd = new SqlCommand("select * from " + textBox1.Text.Trim(), conn);
//使用ExecuteReade方法创建SqlDataReader对象
SqlDataReader sdr = cmd.ExecuteReader();
sdr.Read();//调用Read方法读取SqlDataReade
if (sdr.HasRows)//使用HasRows属性判断结果中是否有数据
{
MessageBox.Show("数据表中有值");//弹出提示信息
}
else
{
MessageBox.Show("数据表中没有任何数据");
}
- 2022-02-07 01:03:03下载
- 积分:1
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2D-MUSIC
L型阵下基于2D-MUSIC的二维DOA估计算法(Under the L-type array estimation algorithm based on 2D-MUSIC-dimensional DOA)
- 2020-11-21 22:19:35下载
- 积分:1
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URLProtocol
safari调用第三方APP demo 可以直接调试成功 供新手参考 (safari called third-party APP demo success can be directly debug reference for the novice)
- 2013-12-10 15:36:35下载
- 积分:1
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vx5.5
说明: vxworks 5.5源码,开源,很实用的,希望对大家有帮助。(/*
modification history
--------------------
01m,17oct94,rhp doc: remove obsolete reference to intALib (SPR#3712).
01l,20sep94,rhp doc: do not mention exceptions in intLib man page (SPR#1494).
01k,21jan93,jdi documentation cleanup for 5.1.
01j,07jul92,yao moved from arch/mips. moved intConnect(), areWeNested)
- 2020-06-20 09:00:01下载
- 积分:1
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ftp配置
说明: 手把手配置ftp,根据实际操作所需完成实际配置,基本不会有任何难度,完全展示步骤(Handle configuration FTP, according to the actual operation needs to complete the actual configuration, basically without any difficulty, fully demonstrate the steps)
- 2019-12-15 20:11:06下载
- 积分:1
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rsa
整体思路
用createkey.java 文件来产生秘钥,用jiami.java 文件来实
现加密,用jiemi.java 文件来实现解密,用BigInteger.java 来实现
大数的表示及运算,用rsa.java 来实现前端图形界面显示。有关函
数见五个文件里的具体实现。
(The overall outlook createkey.java document used to generate secret keys, used to achieve jiami.java file encryption, used to achieve jiemi.java documents declassified by BigInteger.java to achieve expression of large numbers and calculations, using rsa.java to achieve front-end graphical interface display. Related functions, see the five concrete realization of the document.)
- 2008-01-17 03:50:25下载
- 积分:1
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MT4PEA-reference
MT4+EA编程中级篇。EA编程人员学习宝典。(MT4+EA Reference)
- 2020-07-25 00:18:43下载
- 积分:1
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WPF控件库HandyControl
【实例简介】界面非常漂亮,效果棒棒的
用法
Step 1: Add a reference to HandyControl or search for HandyControl on the nuget;
Install-Package HandyControl
Step 2: Add code in App.xaml as follows:
Step 3: Add NameSpace: xmlns:hc="https://handyorg.github.io/handycontrol"
Step 4: Enjoy coding
- 2021-05-29 00:31:18下载
- 积分:1