C# ListBox拒绝添加重复信息

一个DES加解密程序，有兴趣的可以下来看看。(A program about DES)

信息加密——基于BMP位图的信息隐藏算法源代码,包含一个主要头文件和c source文件InfoHidden.h和InfoHidden.c主要是提供一种思路，如果从未接触，建议先看看算法

非常适合刚接触C#的同学学习，内容包含了C#基础，SQL(这部分很详细),ADO.NET， Socket网络编程，HTML入门，WinForm基础，里面的知识点很详细，例子较多，对于 复习C#和MSsql很有帮助！(Very suitable for students new to learn C#, contains the C#-based, SQL (this part is very detailed), ADO.NET, Socket network programming, HTML entry, WinForm base, which is very detailed knowledge points, more examples for C# and MSsql review helpful!)

ID卡识别实例

winsocket 示例代码，windows下的socket，简单易用，适合新手入门

四阶龙格库塔法解一阶二元微分方程 应用于数值计算(Fourth-order Runge-Kutta method for solving a class of binary differential equations for numerical calculation)

电力系统配电网树状网的潮流计算，附有有PDF的程序源码文档说明 (Power system with grid power flow calculation of the tree network, attached to the PDF program source code documentation)

基于STC89c52RC的红外遥控车程序，四个电机，红外遥控38Khz载波(Infrared remote control vehicle program based on STC89c52RC, four motors, infrared remote control 38Khz carrier)

说明：  对stm32f407xx使用的烟雾传感器模块MQ2的例程，使用的亦为模拟引脚读取功能(For the routine of the smoke sensor module MQ2 used in stm32f407xx, the analog pin reading function is also used.)

在进行图像处理相关DSP编程时，需要移植opencv到CCS平台。作者提供了将Opencv（1.0版本）的cxcore函数库移植到CCS的静态链接库cxcore.lib，以及其生成工程，该例程经作者编译听通过（ccs3.3版本）。由于工程中产生的obj文件和lib文件太大，在工程中已经将其删除，读者在使用时，只需要对工程重新编译即可。最后将生成的cxcore.lib添加到CCS的工程中即可（不要忘了添加相应的头文件），由于cxcore.lib一般和cv.lib配套使用，读者在下载cxcore.lib时也一并将cv.lib下载。作者也提供了将cv.lib与cxcore.lib添加到工程中的实验例程，并且该例程编译通过。也希望读者在该论坛找到该例程将其一并下载，配合使用。(During image processing DSP programming related, it is necessary to transplant opencv CCS platform. The authors provide the Opencv (1.0 version) of cxcore CCS library ported to the static link library cxcore.lib, as well as its generation project, the routine is compiled by the author to listen through (ccs3.3 version). As the project has generated obj files and lib file is too large, the project has been to remove it, the reader is in use, only need to recompile the project. Finally, the resulting cxcore.lib added to the CCS project can (do not forget to add the appropriate header files), as cxcore.lib general and cv.lib supporting the use of the reader and download cxcore.lib when a cv . lib download. The author also provides a cv.lib cxcore.lib added to the project with the experimental routine, and the routine compile. I hope readers find in this forum and download one of the routine, with the use.)