柳州阿里云代理商：asp.net连接access数据库代码

luotuoemo • 2024年1月31日 10:59 • 阿里云 • 75 views

以下是一个简单的ASP.NET连接Access数据库的代码示例：

using System;
using System.Data.OleDb;

public partial class Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=YourAccessDatabasePath";
        using (OleDbConnection connection = new OleDbConnection(connectionString))
        {
            connection.Open();
            string query = "SELECT * FROM YourTableName";
            using (OleDbCommand command = new OleDbCommand(query, connection))
            {
                using (OleDbDataReader reader = command.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        string data = reader["YourColumnName"].ToString();
                        // Do something with the data
                    }
                }
            }
        }
    }
}

请注意将”YourAccessDatabasePath”替换为您实际的Access数据库文件路径，将”YourTableName”替换为您要操作的表名，将”YourColumnName”替换为您要获取数据的列名。

该示例使用System.Data.OleDb命名空间中的类进行数据库连接和查询操作。连接字符串使用”Provider=Microsoft.ACE.OLEDB.12.0″表示使用Microsoft Access数据库引擎12.0提供程序。

您可以根据需要自行修改和扩展代码。

以下是使用ASP.NET连接Access数据库的代码示例：

using System;
using System.Data;
using System.Data.OleDb;

namespace AccessDatabaseExample
{
    public class AccessDBHelper
    {
        private string connectionString;

        public AccessDBHelper(string dbFilePath)
        {
            // 设置Access数据库连接字符串
            connectionString = $"Provider=Microsoft.Jet.OLEDB.4.0;Data Source={dbFilePath};Persist Security Info=False;";
        }

        public DataTable ExecuteQuery(string sqlQuery)
        {
            DataTable dataTable = new DataTable();

            try
            {
                using (OleDbConnection connection = new OleDbConnection(connectionString))
                {
                    using (OleDbCommand command = new OleDbCommand(sqlQuery, connection))
                    {
                        connection.Open();
                        OleDbDataAdapter adapter = new OleDbDataAdapter(command);
                        adapter.Fill(dataTable);
                    }
                }
            }
            catch (Exception ex)
            {
                // 处理异常
                Console.WriteLine(ex.Message);
            }

            return dataTable;
        }

        public int ExecuteNonQuery(string sqlQuery)
        {
            int affectedRows = 0;

            try
            {
                using (OleDbConnection connection = new OleDbConnection(connectionString))
                {
                    using (OleDbCommand command = new OleDbCommand(sqlQuery, connection))
                    {
                        connection.Open();
                        affectedRows = command.ExecuteNonQuery();
                    }
                }
            }
            catch (Exception ex)
            {
                // 处理异常
                Console.WriteLine(ex.Message);
            }

            return affectedRows;
        }
    }

    public class Program
    {
        static void Main(string[] args)
        {
            AccessDBHelper dbHelper = new AccessDBHelper("C:pathtoyourdatabase.mdb");

            // 执行查询
            DataTable dataTable = dbHelper.ExecuteQuery("SELECT * FROM YourTable");

            // 遍历查询结果
            foreach (DataRow row in dataTable.Rows)
            {
                string column1 = row["Column1"].ToString();
                string column2 = row["Column2"].ToString();
                // 其他列...
                Console.WriteLine($"Column1: {column1}, Column2: {column2}");
            }

            // 执行插入、更新或删除操作
            int affectedRows = dbHelper.ExecuteNonQuery("INSERT INTO YourTable (Column1, Column2) VALUES ('value1', 'value2')");

            Console.WriteLine($"Affected Rows: {affectedRows}");
        }
    }
}

请替换以下内容以适应您的实际情况：