如何在VS中調用數據庫存儲過程

一、存儲過程

概述：存儲過程是一種數據庫對象，儲存在數據庫內，可用應用程序通過一個調用執行。允許用戶聲明變量，有條件執行。

調用存儲過程：

首先在數據庫寫好存儲過程

--根據loginId查詢教員信息
if OBJECT_ID('SelectTeacherByLoginId') is not null
drop procedure SelectTeacherByLoginId
go
create procedure SelectTeacherByLoginId
@LoginId varchar(50) --參數
as
select TeacherID, TeacherName,Sex,LoginId,LoginPwd,Birthday,UserState,t.UserStateId
from Teacher t,UserState u where t.UserStateId=u.UserStateId and LoginId=@LoginId
go
--調用
exec SelectTeacherByLoginId 't001'

然后在應用程序管理類調用：

  #region 根據LoginID查詢教員信息
        //根據LoginID查詢教員信息
        public static Teacher SelectTeacherByLoginId(string loginId)
        {
            Teacher tea = null;
            string sql = "SelectTeacherByLoginId";
            SqlDataReader dr = DBHelper.ExecteReader(sql,
               CommandType.StoredProcedure //調用存儲過程
               ,
               new SqlParameter[] {new SqlParameter("@LoginId",loginId)}
               );
            if (dr.Read())
            {
                tea = new Teacher();
                tea.TeacherID = Convert.ToInt32(dr["TeacherID"]);
                tea.LoginId = dr["LoginId"] + "";
                tea.LoginPwd = dr["LoginPwd"] + "";
                tea.TeacherName = dr["TeacherName"] + "";
                tea.Sex = dr["Sex"] + "";
                tea.UserState = dr["UserState"] + "";
                tea.UserStateId = Convert.ToInt32(dr["UserStateId"]);
                tea.Birthday = Convert.ToDateTime(dr["Birthday"]);
            }
            dr.Close();
            DBHelper.CloseCon();
            return tea;
        } 
        #endregion

最后在UI界面調用：