在C#中执行SQL Server存储过程时获取空值

using System;
using System.Data;
using System.Data.SqlClient;

public class Program
{
    public static void Main()
    {
        string connectionString = "YourConnectionString"; // 替换为实际的数据库连接字符串

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

            using (SqlCommand command = new SqlCommand("YourStoredProcedureName", connection))
            {
                command.CommandType = CommandType.StoredProcedure;

                // 添加存储过程参数
                command.Parameters.AddWithValue("@Param1", DBNull.Value); // 替换为实际的参数名和值

                // 执行存储过程
                command.ExecuteNonQuery();
            }
        }
    }
}