asp.net连接数据库文件下载

string connectionString = "Server=myServerAddress;Database=myDataBase;User Id=myUsername;Password=myPassword;";
using (SqlConnection connection = new SqlConnection(connectionString))
{
    try
    {
        connection.Open();
        // 连接成功
    }
    catch (SqlException ex)
    {
        // 处理连接异常
        Console.WriteLine(ex.Message);
    }
}

string filePath = Server.MapPath("~/App_Data/MyDatabase.mdf");
if (File.Exists(filePath))
{
    Response.ContentType = "application/octet-stream";
    Response.AppendHeader("Content-Disposition", "attachment; filename=MyDatabase.mdf");
    Response.TransmitFile(filePath);
    Response.End();
}
else
{
    Response.Write("File not found.");
}