C # Forms read Excel into SQL database

A textbox1,2 button is placed on a Windows Form button1 and button2~ Press button1 select Excel file ~ Press Button2 for related processingCode Snippetprivate void Button1_Click (Object Sendeer,eventargs e){OpenFileDialog openfiledialog1=new

Linux C Get system time

#include main () {time_t timep;time (&TIMEP);p rintf ("%s", Asctime (Gmtime (&TIMEP)));}#include main () {time_t timep;time (&TIMEP);p rintf ("%s", CTime (&TIMEP));}#include #include main () {struct Timeval tv;struct timezone tz;gettimeofday (&TV ,

Binary sort tree Implementation (C + + encapsulation)

Design ideasDesign a class, the root node can only be read, with the construction of two fork tree, insert nodes, delete nodes, find, find the maximum value, find the minimum, find the first and successor of the specified node and other functional

[C++]no matching function for call to ' sort (...) ......

"Problem"In doing leetcode merge intervals use C + + 's sort function, has been out of this error, is very depressed. Finally found the problem."Code"#include #include #include using namespace std;struct Interval { int start; int end;

Auto_ptr of C + + smart pointers

1. Auto_ptrAuto_ptr is the class template provided by the C + + standard library, which is the owner of this memory, and the Auto_ptr object is initialized to the dynamic memory created by new, and a piece of memory cannot be assigned to two owners

"C + + program" for average results

#define NUM //pre-defined to modify the number of girls #includeusing namespace Std;int main () {int girl[num];int total= 0,i;float average;cout>girl[i];total+=girl[i];} Average= (float) total/num;//cast cout"C + + program" for average results

Relive the C language--file manipulation

#include #include int main () {char buf[64]= "Hello word!"; /read to open file read file information output/*file *fp=fopen ("./file1", "R"), if (!FP) {perror ("File Open exception!"); Exit (-1);} Char buf[64]={"};size_t num=fread (BUF,1,63,FP);p

Application of "C + + program" abstract class

#include using namespace Std;class shape{public:virtual double area () =0;//pure virtual function};class Trigon:public Shape {Public:trigon (double h,double W) {h=h;w=w;} Double area () {return H*W/2;} Protected:double h,w;}; Class Square:public

C # Get the path to "all user desktops"

Want to get the path to the all Users Desktop (public\desktop) in C #.Originally thought very simple, howeverEnvironment.getfolderpath (Environment.SpecialFolder.Desktop)Only the current user's desktop path can be obtained. In the end, there is no

About C # Read XML small example

1. First this is an XML fileCodeCorpOrderIDActorActDateHow to get to all the CorporderidusingSystem.Xml.Linq;//引用这个命名空间XElement xml = XElement.Load(@"D:\Test\user.xml");//加载这个xmlvarquery = xml.Descendants("Data");//获取Data节点foreach(varitem inquery){  

11.3.5 to implement delay values for C #

11.3.5 to implement delay values for C #In section 11.3.3, we use functions to represent deferred computations in C #. We have just discussed the lazy type in F #, which adds caching functionality to the computed value. Starting with Visual Studio 20

C # for Arcengine Development 2

Arcengine Spatial Analysis:What I know at the moment is:1, geoprocessor use the relevant tools in the ESRI.ARCGIS.AnalysisTools for clip,interset,identity operation:Take clip for example as follows:String Ioutpath = Mlstr + xzshpstr;Geoprocessor g =

C # Windows Services

Windows services are applications that can be opened automatically when the operating system starts. Windows services can run without an interactive user logging on to the system. You can configure the Windows service to run from a specially

C # delegates and events

Has been a kind of fear of delegates and events, just beginning to get started in C #, very afraid to touch it, now some understand, write down as a learning process notes, to prevent forgettingA delegate is the passing of a method as a parameter.

C # Baidu Map Development (II) Convert JSON data to the corresponding class

in the "C # Baidu Map Development (a) launch HTTP request " in the article we provide Baidu API URL request, and get the results returned, the result is a string of JSON data, we first put this JSON data, Use online work to format. { "status": 0,

Hdu 2059 Tortoise and rabbit race (DP)

Hdu 2059 Tortoise and rabbit race (DP)   It is not clear that the remaining power of electric vehicles cannot be used, and each time it is full.   Question Analysis: For dynamic planning problems, you can perform DP on the site, plus a total of n + 2

HDU 1016 Prime Ring Problem

HDU 1016 Prime Ring Problem I use DFS. Read the code and comments. #include #include #include#include #include using namespace std; // Because n

Insert and delete binary tree and binary tree

Insert and delete binary tree and binary tree Insert a binary sorting tree First, check whether the data to be inserted already exists. If yes, do not insert the data. If no, insert the element to the left and right children of the node where the

C ++ Study Notes-dynamic memory and smart pointer Analysis and Study Notes Analysis

C ++ Study Notes-dynamic memory and smart pointer Analysis and Study Notes Analysis Our program uses the following memory:  In c ++, after a common object leaves its scope, its destructor will be automatically called to destroy the object and

Hdu 1066 Last non-zero Digit in N! (Number Theory -- n! The last non-0 digit in)

Hdu 1066 Last non-zero Digit in N! (Number Theory -- n! The last non-0 digit in) Last non-zero Digit in N! Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission (s): 6432 Accepted Submission (s):

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