C#

Public class CoverExcellToImage{Private static string SAVEEXCELJPG = @ "c:/temp/10902.16.jpg ";Private static readonly string [] ArrRang = new string [] {"A", "B", "C", "D", "E", "F ", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P ", "Q", "R", "S",

// Intercept stringPublic static string getStr (string s, int l){String temp = s;If (Regex. Replace (temp, "[\ u4e00-\ u9fa5]", "zz", RegexOptions. IgnoreCase). Length {Return temp;}For (int I = temp. Length; I> = 0; I --){Temp = temp. Substring (0,

After the program is opened, the form is gradually displayed from transparent to opaque.Implementation Method:1. Add a Timer control (named fadeTimer in this example), and then add the relevant code in FadeTimer_Tick to its Tick event. That's

I recently developed a small program that needs to use FFT, but there is no reliable FFT code in C #, and the speed is not satisfactory. I found that MIT has done a good C ++ class library (http://www.fftw.org/) can better solve the problem of FFT

In this example, create the C # application HelloWorld !, Create a notepad file and enter the code.Using System;Namespace HelloWorld{Class Hello{Static void Main (){Console. WriteLine ("Hello World! ");Console. WriteLine ("Press any key to exit

Implicit conversion and display conversion are available in every language, and C # is no exception. Generally, when writing an arithmetic expression, you must ensure that the overall data type is consistent and the calculation is accurate. For

The parameterized method is used to update the access database today. No error is returned, but the data is not updated. Later, we found that when access is parameterized, the parameter location must be in the same order as the value assignment.

Implementation ideas:At the beginning of the Main () method, traverse all processes and obtain the Assembly GUID and PID of each process. If a process with the same GUID and different PID is found, log out of the process.Note:1. GUID is used to

Using System;Using System. Collections. Generic;Using System. Linq;Using System. Text;Using System. IO; Namespace file stream{Class Program{Static void Main (string [] args){// C # stream Write File, default Append FileMode. AppendString msg = "OK ";

1. What are the structural features? Implementation code?The structure is defined by the struct keyword, which is similar to the class but essentially different from the class. The structure is actually a value type and does not need to be allocated.

These two days are being written. NET final project. If you want to do an artist, you will use the IrisSkin control to start loading the skin. If you replace several models, you will be able to run it correctly. This has been a game for N times, but

Synchronization means that in a multi-threaded program, in order to allocate critical resources between two or more threads, how can we allocate critical resources so that other threads cannot use them when they are used by a thread, which can

Generation of structural class values• A structural class variable exists in the stackThe dimensions field is not pre-assigned.The values field can be read only after being assigned a value.The vertex operator is used to access members.The following

Method 1:Static void Main (){ System. Threading. Mutex mutex; Bool isNew; Mutex = new System. Threading. Mutex (true, "myproject", out isNew ); If (isNew) { Application. EnableVisualStyles (); Application. SetCompatibleTextRenderingDefault (false );

First, create a stored procedure. The SQL statement is as follows: [SQL]USE [YCYFFJKXT]GO/***** Object: StoredProcedure [dbo]. [Login_UserCount] script Date: 07/17/2012 14:53:18 ******/SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOCreate proc [dbo]. [

Case implementation: Click the blank area of the window with the left mouse button, and hold down the mouse to drag the window. This case is easy to implement and can be applied in some custom windows (for example, the window does not display the

Let's take a look at the text message interface of the iPhone.    I just saw this interface and the saliva couldn't stop. Dry your saliva and quickly imitate it.   Initial Practice: Based on UserControl, you can create a user control that contains

Today, I want to talk to you about the performance optimization of C #. Of course, I will not talk about the basic principles here. It is assumed that you are very proficient, this article is about programs that require several milliseconds. For

Delegate is used to pass a method as a parameter to other methods. The following is an example of entrusting an application: Using System;Using System. Collections. Generic;Using System. Linq;Using System. Text; Namespace DelegateApp{Public class

: This (...)• One constructor can call another constructor.Struct ColouredPoint{Public ColouredPoint (int x, int y): This (x, y, Colour. Red){} Public ColouredPoint (int x, int y, Colour c){...}...Private int x, y; www.2cto.comPrivate Colour