从SQL Server数据库中保存的二进制文件中检索C#对象

using System;
using System.Data.SqlClient;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

public class Program
{
    public static void Main()
    {
        string connectionString = "Your SQL Server connection string";
        string query = "SELECT BinaryData FROM YourTable WHERE Id = @Id";

        int recordId = 1; // 你要检索的记录的ID

        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            connection.Open();

            using (SqlCommand command = new SqlCommand(query, connection))
            {
                command.Parameters.AddWithValue("@Id", recordId);

                using (SqlDataReader reader = command.ExecuteReader())
                {
                    if (reader.Read())
                    {
                        byte[] binaryData = (byte[])reader["BinaryData"];

                        // 将二进制数据转换为C#对象
                        YourObjectType obj = DeserializeObject(binaryData);

                        // 在这里使用C#对象
                        Console.WriteLine(obj.ToString());
                    }
                }
            }
        }
    }

    private static YourObjectType DeserializeObject(byte[] binaryData)
    {
        using (MemoryStream stream = new MemoryStream(binaryData))
        {
            BinaryFormatter formatter = new BinaryFormatter();
            return (YourObjectType)formatter.Deserialize(stream);
        }
    }
}

[Serializable]
public class YourObjectType
{
    // 在这里定义你的C#对象的属性和方法
}