c# sqlite example

Tags: des style blog http io ar color OS sp5. Implementing File Replication1 intCopyFile (Char*sourcefile,Char*NewFile)2 {3Ifstreaminch;4Ofstream out;5 inch. open (Sourcefile,ios::binary);//Open source File6 if(inch. Fail ())//failed to open source file7 {8cout"Error 1:fail to open the source file."Endl;9 inch. Close ();Ten out. Close (); One return 0; A } - out. open (Newfile,ios::binary);//Create a target file - if( out. Fail ())//failed to cre

in C #,Sqlitehelper is a public class library that accesses SQLite, as described in my C # SQLite help class.3. Get the current sequence value[Sqlitefunction (Name ="GetCurrentValue", Arguments =1, Functype =functiontype.scalar)] Public classgetcurrentvalue:sqlitefunction { Public Override ObjectInvoke (Object[] args)

Tags: cin alc sql blob gen font Body object cell SQLite Data Types C # Data types BIGINT Int64 Biguint UInt64 BINARY Binary BIT Boolean Preferred Blob Binary Preferred BOOL Boolean

Label:When you use the SQLite database in C #, you find that when you delete a data table or a large amount of data, the database does not become smaller. This is because when a large amount of data is deleted in the database, the original data space (the free data page) is left, and the database does not automatically release the space by default. You can free up space by using the VACUUM command. Two met

private Sqliteconnection Connection;Private Sqlitecommand command;Private sqlitetransaction transaction;String sqconnectionstring = "Zg.db";public void Excutequery (){Connection = new Sqliteconnection ("Data Source =" + sqconnectionstring);Connection. Open ();Set up a database and connectCommand = connection. CreateCommand ();Transaction = connection. BeginTransaction ();Open transaction////Command.commandtext = string. Format ("INSERT into Cinfo VALUES (' 0 ', ' 1 ', ' 2 ', ' 3 ', ' 4 ')");Comm

Programmer --- C language details 26 (boolean type, continue details in C language, sizeof example, strlen example)Main Content: boolean type, continue details in C language, sizeof example, strlen exampleI. boolean type Many peop

C pointer example, C pointer example In computer science, Pointer is an object in programming languages. With an address, its value directly points to the value in another place in computer memory. Because the address can find the required variable unit, it can be said that the address points to the variable unit. Ther

Programmer --- C language details 26 (Boolean Type in C language, continue details, sizeof example, strlen example), --- cstrlenMain Content: boolean type, continue details in C language, sizeof example, strlen exampleI. boolean t

C language example 03-above, C language example 03- Sorry, I have to do some work for my family these two days. In addition, the internal capacity and operation volume are also greatly increased. Therefore, writing is slow. But starting from today. Many of the things I wrote have never been learned before. So the speed

Main contents: Boolean type, continue detail, sizeof example, strlen example in C languageOne, Boolean typeMaybe a lot of people don't know that now C has a Boolean type: Starting with the C99 standard, the type name is "_bool"Before the C99 standard we used to imitate the definition of Boolean type, common in the foll

The c language uses the libcurl and json-c methods (code example), libcurljson-cC language uses libcurl and json-c method (code example) # Include # Include # Include # Include # Include # Include Struct curl_return