如何随机得到Access数据库记录
由于Access 数据库 记录 集缓存的原因,从代码里 得到 Access 数据库 随机 记录 是得不到,需要用 随机 SQL语句的办法来消除缓存。 下面就是例子: voidPage_Load(Objectsrc,EventArgse) { if(!IsPostBack) { stringMyConnString=Provider=Microsoft.Jet.Ole
下面就是例子:
voidPage_Load(Objectsrc,EventArgse)
{
if(!IsPostBack)
{
stringMyConnString=“Provider=Microsoft.Jet.OleDB.4.0;DataSource=”
+Server.MapPath(”aspxWeb.mdb.ascx”);
RandomR=newRandom();
intintRandomNumber=R.Next(1,1000);
stringsql=“selecttop10idAs序号,TitleAs标题fromDocumentOrderByRnd(”
+(-1*intRandomNumber).ToString()+“*id)”;
OleDbConnectionMyConnection=newOleDbConnection(MyConnString);
MyConnection.Open();
OleDbCommandcmd=newOleDbCommand(sql,MyConnection);
OleDbDataReaderdr=cmd.ExecuteReader();
DataGrid1.DataSource=dr;
DataGrid1.DataBind();
cmd.Dispose();
MyConnection.Close();
MyConnection.Dispose();
MyConnection=null;
}
}
Width=”600px”runat=”server”Font-Size=”9pt”>

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



1. Open settings in Windows 11. You can use Win+I shortcut or any other method. 2. Go to the Apps section and click Apps & Features. 3. Find the application you want to prevent from running in the background. Click the three-dot button and select Advanced Options. 4. Find the [Background Application Permissions] section and select the desired value. By default, Windows 11 sets power optimization mode. It allows Windows to manage how applications work in the background. For example, once you enable battery saver mode to preserve battery, the system will automatically close all apps. 5. Select [Never] to prevent the application from running in the background. Please note that if you notice that the program is not sending you notifications, failing to update data, etc., you can

DeepSeek cannot convert files directly to PDF. Depending on the file type, you can use different methods: Common documents (Word, Excel, PowerPoint): Use Microsoft Office, LibreOffice and other software to export as PDF. Image: Save as PDF using image viewer or image processing software. Web pages: Use the browser's "Print into PDF" function or the dedicated web page to PDF tool. Uncommon formats: Find the right converter and convert it to PDF. It is crucial to choose the right tools and develop a plan based on the actual situation.

Oracle can read dbf files through the following steps: create an external table and reference the dbf file; query the external table to retrieve data; import the data into the Oracle table.

Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps

How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())

To handle database connection errors in PHP, you can use the following steps: Use mysqli_connect_errno() to obtain the error code. Use mysqli_connect_error() to get the error message. By capturing and logging these error messages, database connection issues can be easily identified and resolved, ensuring the smooth running of your application.

Yesterday, BotanixLabs announced that it has completed a total of US$11.5 million in financing, with participation from Polychain Capital, Placeholder Capital and others. Financing will be used to build the decentralized EVM equivalent of BTCL2Botanix. Spiderchain combines the ease of use of EVM with the security of Bitcoin. Since the testnet went live in November 2023, there have been more than 200,000 active addresses. Odaily will analyze Botanix’s characteristic mechanism and testnet interaction process in this article. Botanix According to the official definition, Botanix is a decentralized Turing-complete L2EVM built on Bitcoin and consists of two core components: Ethereum Virtual Machine

Using the database callback function in Golang can achieve: executing custom code after the specified database operation is completed. Add custom behavior through separate functions without writing additional code. Callback functions are available for insert, update, delete, and query operations. You must use the sql.Exec, sql.QueryRow, or sql.Query function to use the callback function.
