catch system

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Some common methods for database operations (2)

# Region execute simple SQL statements /// /// Execute the SQL statement and return the number of affected records/// ///SQL statement/// Number of affected records Public static int executesql (string sqlstring){Using (sqlconnection

Chinese character Pinyin and Pinyin Code Acquisition

Chinese character Pinyin and Pinyin Code Acquisition Public class classime_spell_code{Public classime_spell_code (){} # Region Chinese pinyin code/// /// Chinese pinyin code/// Public static string getime_spell (string strimechar){String strresult =

3DES, AES, MD5 encryption and decryption Methods

---------- Des 8-bit key ---/// /// String Encryption/// /// string to be encrypted /// key /// returns the encrypted string Public static string desencrypt (string strtext, string strencrkey){Byte [] bykey = NULL;Byte [] IV = {0x12, 0x34, 0x56, 0

Sqldmo backup to restore the sqlserver2000 Database

Private void btnBackUp_Click (object sender, System. EventArgs e) { If (rtbBack. Text. Trim () = string. Empty) { MessageBox. Show ("Remarks required", "prompt", MessageBoxButtons. OK, MessageBoxIcon. Asterisk ); } Else { This. Cursor = Cursors.

Data transmission using SQL through VS. NET protocol

Method1: Directly ask the Server String packageName = "Z_Test1 ";Object pVarPersistStgOfHost = null; DTS. PackageClass package = new DTS. PackageClass ();Package. LoadFromSQLServer ("YourServerName", "UserName", "Password", DTS.

XML Common Operations

 Using system; Using system. IO; Using system. Data; Using system. xml; Using system. xml. XPath; Namespace executexml ...{ Public class xmlcontrol ...{ Protected string strxmlfile; Protected xmldocument objxmldoc = new xmldocument (); Public

Use a transaction to process multiple SQL statements at a time

When performing an operation, you must modify the data in multiple tables at the same time, and each data entry must be successfully operated. To prevent some data operations from being successful, we need to use transactions for data disorder. The

Perform transactions on Asp. Net data operations at three levels

Many database operations require transactions. There are roughly three levels of transactions under Asp.net: (1) transactions at the stored procedure level (2) Ado. Net transactions (3) Asp. Net page-level transactions The following are

Use the Named Pipe in. NET to complete inter-process communication from the Network)

Have you ever had to exchange data between two. NET applications on the same machine? For example, a Web site and a Windows service ?. NET Framework provides several good options to complete inter-process communication (IPC): Web Service, Remoting.

. Net C # Check whether the remote URL exists

Three methods are used to check whether a remote URL exists.   Private void page_load (Object sender, system. eventargs E) { String url1 = "http://www.ximenyifan.com /"; String url2 =" Response. Write (" Method 1 :"); Response. Write

Asp.net (C #)] XML operation class

Asp.net (C #)] XML operation class (1) Public class xmlcontrol { Protected string strxmlfile; Protected xmldocument objxmldoc = new xmldocument (); Public xmlcontrol (string xmlfile) { // // Todo: add the structure-based program here // Try {

Multi-thread programming in Visual C #

Multi-threaded programming C # in Visual C # is a common development tool on the. NET platform. It can be used to build all. NET applications. In. net, all threads run in the application. Program In the domain (appdomain), this may remind you of

Use of dotnetspeech. dll

Voice is the most natural way for humans to interact with each other and the highest goal of software user interface development at present. Microsoft has been actively promoting the development of speech technology, and released the speech

Three methods for detecting the existence of remote URLs

Private void page_load (Object sender, system. eventargs E){ String url1 = "http://dotnet.aspx.cc /";String url2 = "http://dotnet.aspx.cc/Images/logo.gif ";Response. Write (" Method 1 :");Response. Write (url1 + ":" + urlexistsusinghttpwebrequest (

An invalid length for a base-64 char array error occurred in the encrypted URL.

The class is transferred from: http://forums.asp.net/t/1222829.aspx. However, I have some questions. Now I want to share the answer, which is very simple. Using System; Using System. IO; Using System. xml; Using System. text;

Common method set

Stmp email sendingGenerate random numberAddition and subtraction of Serv-U6.0.0.2AlgorithmImage ScalingBase64 encoding and decoding // Response. Write (Sendmail ("theme", "admin@admin.com", "test@test.com", "body! "); // Call Public

Asp.net sharpziplib compression and decompression Problems

I use sharpziplib. DLL is generated after sharpziplib compression *. the rarfile can be decompressed normally, but if the file is compressed by right-clicking *. the rarfile contains the following error information: Wrong local header Signature: 0x21

C # Use ado.net to dynamically create excle and display corresponding data changes

Button1 is the dynamic creation of excle, button2 is the addition of data, button3 is the real data Using system;Using system. Collections. Generic;Using system. componentmodel;Using system. Data;Using system. drawing;Using system. LINQ;Using system.

Handling errors exceptionally well in C ++ catch unexpected errors in C ++

Handling errors exceptionally well in C ++ Capture unexpected errors in C ++ From: http://www.cprogramming.com/tutorial/exceptions.htmlAuthor: UnknownTranslation: Fan chenpengOne benefit of C ++ over C is its exception handling system. an exception

) Use the Named Pipe in. Net to complete inter-process communication.

Original article: Ivan lattner: inter-process communication in. Net Using Named Pipes, Part 1 http://www.codeproject.com/KB/threads/dotnetnamedpipespart1.aspx Use a named pipe in. Net to complete inter-process communication Have you ever had to

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