C++

1. Convert arrarlist to string []: Arraylist list = new arraylist (); List. Add ("AAA "); List. Add ("BBB "); // Convert to an array String [] arrstring = (string []) List. toarray (typeof (string )); 2. Convert string [] to arrarlist:

You can use the following method to set the timeout detection for receiving or sending a socket.   Static void configuretcpsocket (socket tcpsocket) { // don't allow another socket to bind to this port. tcpsocket. exclusiveaddressuse = true; //

First, forgive me for being unfamiliar with C #, I encountered a problem today. I want to use C # to parse data from XML, and then ...... I am too weak to make all kinds of details, So I wrote a class and gave it to myself.   Using system;

Take building a pyramid as an example. In C #, you can use the following Code : If (Ds. buildoverviews (ARGs [ 1 ], Levels, New Gdal. gdalprogressfuncdelegate (progressfunc ), " Sample Data " )! = ( Int ) Cplerr. ce_none ){ MessageBox. Show

Below isSource code, Create a consoleProgram, And thenCodeCopy it in ~~   Using system; using system. collections; using system. data; using system. net; using system. net. sockets; namespace pping { /// // summary description for class.

/// /// Create an empty shapefile with the specified name in the specified path /// /// specify the path /// file name Public void createshapefile (string strshapefolder, string strshapename){// Open the WorkspaceConst string

String sconnectionstring = "provider = Microsoft. Jet. oledb.4.0;" + "Data Source =" + @ "C:/pp.xls;" + "extended properties = Excel 8.0 ;";   // Create connection object by using the preceding connection string. Oledbconnection objconn = new

Two open-source controls are used to read the content of an Excel file. You do not need to install Excel or office. The development environment may require vs2008 (2005 has not been tested) Npoi, read the xls file (excel2003 and earlier versions)

Using system; Using system. Collections. Generic; Using system. componentmodel; Using system. Data; Using system. drawing; Using system. text; Using system. Windows. forms; Using system. runtime. interopservices; Using system. Drawing.

 Private bool findnode (treenode node) ...{ /** // * Int id1 = convert. toint16 (node. Tag. tostring ()); String sqlstr = "delete from DP where id1 =" + id1; Return dbclass. db_executenonquery (sqlstr ); */ // What you want to do MessageBox (node.

If the code is device. drawprimitives (primitivetype. linestrip,), the execution result is: it draws the vertex as a line. At least two vertices are required. If the code is device. drawprimitives (primitivetype. pointlist,), the result is that the

Private void savexml (xmltextwriter TW, control objs) // save by yanleigis Email: landgis@126.com { If (objs. Controls. Count Foreach (Object OBJ in objs. Controls) { Textbox myextbox; If (obj is textbox) { Myextbox = (textbox) OBJ; Tw.

Managed DirectX + C # Development (Getting Started) Chapter 4 Procedure 1. Create a deviceThe example described in this section is an example provided by the DirectX SDK. Here, I will explain it. This example does nothing but shows a blank form. Now

Chapter 2 vector operations (2) 7: maximum and minimum values of VectorsThe maximum value is obtained from the two vectors x, y, and z respectively to form a new vector. The minimum value is obtained from the two vectors x, y, and z respectively to

Chapter 2 vector operations (1) 1: equal VectorsIn geometry, there are two vectors of the same direction and length equal. In mathematics, we say that vectors with the same dimension and component are equal. For example, if UX = VX, Uy = Vy, and uz =

Chapter 7 vertex Buffering I. Index BufferingTriangles in 3D objects often share many vertices. If two triangles are combined into a rectangle and two vertices are used repeatedly, the number of repeated vertices increases when a more refined and

MessageBox. Show (convert. tostring (12345, 2); // convert 10 to 2. MessageBox. Show (convert. tostring (12345, 8); // convert 10 to 8. MessageBox. Show (convert. tostring (12345, 16); // converts hexadecimal to hexadecimal.   MessageBox. Show (

Sendkeys. Send ("{break }");--------------------------------------------------Below isSendkeys.Key codeBackspace {backspace}, {BS}, or {bksp}Break {break}Caps Lock {capslock}Del or delete {Delete} or {del}Down Arrow (Down ArrowKey) {down}End

Debugging programs always use a log file to record the debugging process. This code automatically creates a text file and adds new content to the end of the line. The possible problem is that if the log has been opened by a user, other users may not

  Thread operations mainly use the Thread class, which is defined under system. Threading. dll. This reference must be added for use. This class provides four overloaded Constructors (the following is derived from msdn ). Thread