c# oledbconnection 的數(shù)據(jù)備份和恢復如何操作

在C#中使用OleDbConnection進行數(shù)據(jù)備份和恢復操作需要使用SQL語句來實現(xiàn)。以下是一個簡單的示例代碼：

using System;
using System.Data.OleDb;

namespace DataBackupRestore
{
    class Program
    {
        static void Main(string[] args)
        {
            string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\data\\database.mdb";
            
            // 備份數(shù)據(jù)
            using (OleDbConnection connection = new OleDbConnection(connectionString))
            {
                connection.Open();
                string backupPath = "C:\\data\\backup.mdb";
                string backupQuery = $"SELECT * INTO [MS Access;Database={backupPath}].* FROM TableName;";
                using (OleDbCommand command = new OleDbCommand(backupQuery, connection))
                {
                    command.ExecuteNonQuery();
                }
            }
            
            // 恢復數(shù)據(jù)
            using (OleDbConnection connection = new OleDbConnection(connectionString))
            {
                connection.Open();
                string restorePath = "C:\\data\\restore.mdb";
                string restoreQuery = $"SELECT * INTO TableName FROM [MS Access;Database={restorePath}].TableName;";
                using (OleDbCommand command = new OleDbCommand(restoreQuery, connection))
                {
                    command.ExecuteNonQuery();
                }
            }
        }
    }
}

在上面的示例中，首先連接到數(shù)據(jù)庫，然后使用SELECT INTO語句將數(shù)據(jù)備份到指定路徑的數(shù)據(jù)庫文件中。然后再次連接到原始數(shù)據(jù)庫，使用SELECT INTO語句從備份文件中恢復數(shù)據(jù)。請確保替換示例代碼中的數(shù)據(jù)庫路徑和表名為實際需要備份和恢復的數(shù)據(jù)庫和表名。