Regular Expression to verify whether the input is all Chinese C #

  In some cases, for example, when a user needs to enter a Chinese name, it is necessary to verify whether all the user input is in Chinese. In this case, using regular expressions is an ideal choice. The following shows the implementation method:

C # implementation of alternative requirements and normal requirements for getting version numbers

Version: 0.0001.0002.00003     1. Normal requirements: The obtained version number is 0.1.2.3. Assembly. getexecutingassembly (). getname (). version. tostring (); ========================================================== ================ 2.

C # code for outputting a string continuously (two methods)

String S = "test text, just write some text"; foreach (char C in S) { textbox1.appendtext (C. tostring (); int tick = environment. tickcount; // interval. As per your preferences, I will write 100 milliseconds while (environment. tickcount-tick }

C # traverse all files and folders in a folder

Using system. IO;   Private void button#click (Object sender, eventargs e) { string strxmlfilepath = "D: // job // test // code // convertor "; directoryinfo di = new directoryinfo (strxmlfilepath); fileinfo [] f = di. getfiles ("*. * "); //

. Net C # self-taught diary Class Object attribute method package concurrency multi-thread Polymorphism

Ah ~ Speechless I know a lot of things apart, and I don't know them together. Take notes honestly and accumulate learning. Today, I have my own ideas. These simple things are designed to make yourself a habit.   Class, not to mention the

C # extract a graph from a large image

# Region image capturing // // generate a new image from the captured part of the image /// /// original image /// generate a new image /// width /// screenshot height // X coordinate // screenshot y coordinate Public St

C # create a system service program quickly [12 steps in total]

1. New Project-ServiceProgram 2. Gray window, attribute window servecename, and name your service. 3,CodeMode, onstart, add the following code:   Filestream FS = new filestream (@ "D:/mcwindowsservice.txt", filemode. openorcreate, fileaccess.

C # obtain the System user folder and create a subfolder

// ***** ToolsPublic static string getapplocaldir (){String appdatadir = environment. getfolderpath (environment. specialfolder. localapplicationdata ); String sonydir = appdatadir + "// ace ";Checkandcreatedir (sonydir ); String fx01dir =

Use the C # external ping command to obtain network connection information)

When I was playing Windows 98 ComputerWhen the connection starts, the network connection test is normal, and the command "ping.exe" is often used. It feels quite practical.   Now the dig command is used to detect the network. Net is helpful for

C # examples of common APIs [updated]

// *********** The following code uses sendKey to open the notepad and write information, save, close the example ***************** private void button8_click (Object sender, eventargs E) { process TXT = process. start (@ "notepad.exe", @

C # example of using DLL and API to read and write and delete ini. txt files

Using system; using system. io; using system. text; using system. runtime. interopservices; class inifilehandler { [dllimport ("kernel32.dll")] Public static extern uint getprivateprofilestring (string lpappname, string lpkeyname, string

Use C # To implement the simple Ping function, which is used to test whether the network is connected

Use C # To implement the simple Ping function, which is used to test whether the network is connected 1. Obtain the host name based on the IP address /// /// Obtain the host name based on the IP address/// /// Host IP address /// host name Public

C # start a program at startup [by modifying the registry]

Private void button#click (Object sender, eventargs e) { runwhenstart (false, "mystarton", @ "C: /program files/ultraedit/uedit32.exe "); } // // start item // /// whether to start // name /// path of the Startup Program ///

C # The form supports code implementation by dragging multiple files

// Set alowdrop to true in form attributesPrivate void form1_dragenter (Object sender, drageventargs E){If (E. Data. getdata (dataformats. filedrop )! = NULL){E. effect = dragdropeffects. copy;} // The following code does not support the selected

C # Merge Sorting

/// /// Merge and sort/// /// /// Private int [] mergersotr (INT [] myarray){Int Len = 1;While (LEN {Merge (myarray, Len );Len * = 2;} Return myarray;}/// /// Merge operations/// /// /// Private void merge (INT [] myarray, int Len){Int m = 0;Int

C # Quick sorting

The quick sorting mainly uses a temporary bucket to store a fulcrum, and uses the Fulcrum as the comparison standard. The two sequences of size are divided on both sides of the Fulcrum. Then, recursive the two sequences. /// /// Quick sorting/// ///

C # Move a keyboard control Control

How to enable the keyboard to control picturebox. 1. Select form and view attributes: Set keypreview to true;2. Select form and view the event (lightning symbol next to the property): double-click the keydown event to edit the code. Private void

C # winform calls the EXE file in other languages and obtains the return value

Normally, winform cannot obtain the returned value of exe. In this case, I use the method to write the value in EXE to the CSV file, and then winform reads the CSV file.   Private void btngoodsselect_click (Object sender, eventargs

C # The control in winform is disabled, but remains unchanged.

 [System.Runtime.InteropServices.DllImport("user32.dll ")]          public  static  extern  int  SetWindowLong(IntPtr hWnd,  int  nIndex,  int  wndproc);          [System.Runtime.InteropServices.DllImport( "user32.dll " )]          public  static  ex

C # obtain information from the clipboard

Private void button#click (Object sender, eventargs E){/*** The form must include:* Button: Click* A text box control: loads text content* A pic box file: the copied Image Content**/Idataobject idata = clipboard. getdataobject ();If (idata.

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