C++

1. Open the database by specifying the connection properties parameterPublic Ipropertyset Connectsdesql (string saddress, String sdbname, String suser, String spassword){Ipropertyset Propset = new Propertysetclass ();Propset.setproperty ("Server",

A class is a template for creating objects, a class can create multiple objects, each object is a variable of a class type, and the process of creating an object is also called an instantiation of the class. Each object is a concrete instance of the

Original link: http://www.cnblogs.com/eye-like/p/4155943.htmlC # Traversal in two ways for and foreachFor: You need to specify the first data, the end data, the data length, the value of the data can be changed in the FOR traversal statement, the

About C + + reads variable amounts of input data#define _crt_secure_no_warnings 1#include int main () {int sum = 0, value = 0;//reads data until the end of the file, computes the sum of all read-in values and WHI Le (std::cin >> value) sum + = value;

Excerpt from the networkStatic voidMain (string[] args) { //The probability of each item is stored in the array . float[] area =New float[4]{ 0.5f, 0.5f, 0, 0

from:http://m.blog.csdn.net/article/details?id=51075023 The advantage of creating a C # project in VS2015 and then creating a dynamic library DLL project to write is that the entire solution's programming environment is C # mode, so that there are

PortalMiss Basic features of it C + + object-oriented programmingFirst: AbstractAbstract in object-oriented approach refers to the process of summarizing specific problems (objects), extracting the public properties of a class of objects and

Recursive implementation, in order to find the extension of XML as an example, here is used dictionary, you can also use the list (all need to declare variables in advance) Public voidGetAll (DirectoryInfo dir)//Search for files in a

Using system;using system.collections.generic;using system.componentmodel;using system.data;using System.Drawing; Using system.text;using system.windows.forms; namespace getdeskdirectory{    public Partial class Form1:form    {        public Form1 ()

1. Comparing StringsThe String class provides a series of methods for string comparisons, such as the CompareTo and equals methods.　　①compareto:Returns 0 if the value of the argument is equal to this instance, or 1 if this instance is greater than

using System; namespace consoleapplicationcshape{ class program { staticvoid Main (string[] args) { Console.WriteLine ("Hello Wrox. " ); Console.ReadLine (); return ; } }}Variable

C # quickly clears the contents of all text boxesHow do I clear all the text box contents in a form? In two cases: (1) When all text boxes are top-level controls, that is, they are located directly in this. Controls (or Groupbox.controls), this is

The use of fonts generally we are using the system font, so it is more convenient, direct font font=new font ("Microsoft Ya Black", 16f,fontstyle.bold);But when we use a font library that the system does not have, this method is not good, so we can

I'm using vs2013.1. Add reference to Project, Add Reference, Project,COM Select Microsoft Speech Object Library 2. Call the code where you want to use speech synthesis:New= Voice. Getvoices (stringstring. Empty). Item (0); voice. Speak (this.

1.task.run ();static void Main (string[] args){Long A = 9876545678, B = 987654567892;Task task = Task.run (() = ={Add (A, b);});Console.ReadLine ();}static void Add (long A,long B){Console.WriteLine ("This is the Add method!");Console.WriteLine ("{0}

The WindowsIdentity class can get the identity information of the current performer[CSharp]View PlainCopy Recursive search File method Search directory Search filename Public void Getdir (string path,string name) {

C # Recursion So the department shows to the TreeView1. The first is the design of the database tableCreate a new Department table: TestUser table1.ID self-increment int primary key 2.deptname:nchar (3.deptcode:nchar) 4:parentid:nchar (10)2. The

Title Description:There is a sequence that gives the number of 22 gcd in the sequence, and disrupts the order to find the original sequence.Problem Solving Ideas:First, the number in the original sequence will definitely appear in the new sequence,

Title Link: Http://codeforces.com/problemset/problem/660/CRuler extraction1#include 2 using namespacestd;3 intMain ()4 {5 Static intnum[int(3e5 +5)];6 intN, K;7scanf"%d%d", &n, &k);8 for(inti =1; I i) {9scanf"%d", Num +i);Ten } One

HDU 1237 simple calculator stack, hdu1237 Calculator Well, the question is in Chinese, so I don't need to say = I can understand it all. Write a string to store the formula of this line first, but you cannot store one to calculate one, because