存储过程

CREATE PROCEDURE [dbo].[GetSum]
    @num1 INT,
    @num2 INT,
	@result INT OUTPUT
AS
BEGIN

  select   @result= @num1+ @num2
END

 C#代码

using Kingdee.BOS;
using Kingdee.BOS.App.Data;
using Kingdee.BOS.Core.Bill.PlugIn;
using Kingdee.BOS.Util;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;


namespace cux.button.test
{
    [Description("测试调用存储过程")]
    [HotUpdate]
    public class CuxTestBosExecuteServicePlugIn : AbstractBillPlugIn
    {
        public override void BarItemClick(Kingdee.BOS.Core.DynamicForm.PlugIn.Args.BarItemClickEventArgs e)
        {
            base.BarItemClick(e);

            if (e.BarItemKey.Equals("PBQO_tbButton"))
            { 
                int result ;
                List<SqlParam> paramList = new List<SqlParam>();
                paramList.Add(new SqlParam("@num1", KDDbType.Int16,15));
                paramList.Add(new SqlParam("@num2", KDDbType.Int16, 25));
                paramList.Add(new SqlParam("@result", KDDbType.Int16,0) { Direction = ParameterDirection.Output });
                List<SqlParam> sp = DBUtils.ExecuteStoreProcedure(this.Context, "GetSum", paramList);
                result = int.Parse(sp[0].Value.ToString());
                this.View.ShowWarnningMessage(String.Format("值={0}", result),"测试调用存储过程",Kingdee.BOS.Core.DynamicForm.MessageBoxOptions.OK,action:null);

            }
        }
    }
}

参考：https://vip.kingdee.com/article/485386929324606464?productLineId=1&lang=zh-CN