C# ADO.NET (sql语句连接方式)(增,删,改)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;  //连接数据库所需命名空间
using System.Data;   //连接数据库所需命名空间

namespace CMS.Admin  //文件所在命名空间
{
    public partial class index : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string sql = "insert into [Column] (ColumnTitle, ColumnCode) values (@ColumnTitle, @ColumnCode)"; //带参数的sql语句
            SqlParameter[] p = ]; //实例化参数数组
            p[] = new SqlParameter("@ColumnTitle" , SqlDbType.NVarChar);  //定义参数数组元素类型
            p[] = new SqlParameter("@ColumnCode", SqlDbType.NVarChar);  //定义参数数组元素类型
            p[].Value = "入山栏目";  //给参数赋值
            p[].Value = ";  //给参数赋值
            int i = OperationSql(sql , p);  //调用操作数据库的方法
            Response.Write(i);  //向浏览器输出结果
        }

        /// <summary>
        /// 获取配置的数据库连接字符转
        /// </summary>
        public static string ConnStr
        {
            get
            {
                return System.Configuration.ConfigurationManager.ConnectionStrings["SQLConnectionString"].ConnectionString.ToString();
            }
        }

        /// <summary>
        /// 操作数据库(增,删,改)
        /// </summary>
        /// <param name="sql">带参数或者不带参数的sql语句</param>
        /// <param name="parameter">sql语句中的参数数组</param>
        /// <returns>受影响的行数</returns>
        public static int OperationSql(string sql, SqlParameter[] parm)
        {
            SqlConnection conn = new SqlConnection(ConnStr);  //实例化数据库
            try
            {
                if (conn.State == ConnectionState.Closed)
                {
                    conn.Open();  //判断数据库是否打开并打开
                }
                SqlCommand cmd = new SqlCommand(sql, conn);  //实例化连接命令
                )
                {
                    foreach (SqlParameter p in parm)
                    {
                        cmd.Parameters.Add(p);
                    }
                }
                return cmd.ExecuteNonQuery();  //返回受影响的行数
            }
            catch
            {
                ;  //执行失败返回 0
            }
            finally
            {
               conn.Close();  //关闭数据库连接
            }
        }
    }
}