存储过程的创建及在项目中的调用方法总结

  这里总结一下ASP.Net程序中存储过程的使用方法,以及它如何与ADO.NET中的SqlDataAdapter对象,DataSet对象等结合使用.

  一,不带参数查询的存储过程:

　　1,创建存储过程语句:

Create proc [dbo].[sp_SelectUsers]
　　  as
　　  begin
　　  select * from tb_Users;
　　  end

 

　　2,ASP.Net中对存储过程的调用代码:

 public partial class SP_Select : System.Web.UI.Page
   　　 {
       　　 DBClass dbc = new DBClass();
       　　 protected void Page_Load(object sender, EventArgs e)
        　　{
           　　 if (!IsPostBack)
            　　{
               　　 GridView1BindData();
            　　}
        　　}
       　　 public void GridView1BindData()
        　　{
           　　 SqlCommand cmd = dbc.GetCommandProc("sp_SelectUsers");
            　　DataSet ds = dbc.GetDS(cmd);
            　　GridView1.DataSource = ds;
            　　GridView1.DataBind();
        　　}
   　　 }

　　注:DBClass公共类的代码为:

　　

View Code

public class DBClass
    {
        public DBClass()
        { 
            //todo:構造函數.
        }
        #region 創建與數據庫SP的連接
        /// <summary>
        /// 創建與數據庫SP的連接
        /// </summary>
        /// <returns></returns>
        public SqlConnection GetConnection()
        {
            SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["SP"].ConnectionString);
            return con;
        }
        #endregion

        #region 執行存儲過程,返回SqlCommand對象
        /// <summary>
        /// 執行存儲過程,返回SqlCommand對象
        /// </summary>
        /// <param name="strProcName"></param>
        /// <returns></returns>
        public SqlCommand GetCommandProc(string strProcName)
        {
            //DBClass dbc = new DBClass();
            SqlConnection con = GetConnection();
            SqlCommand cmd = new SqlCommand();
            cmd.Connection = con;
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.CommandText = strProcName;
            return cmd;
        }
        #endregion

        #region 執行执行SQL语句命令的SqlCommand对象,用于更新數據庫
        /// <summary>
        /// 執行执行SQL语句命令的SqlCommand对象,用于更新數據庫
        /// </summary>
        /// <param name="cmd"></param>
        public void ExecNonQuery(SqlCommand cmd)
        {
            try
            {
                if (cmd.Connection.State != ConnectionState.Open)
                {
                    cmd.Connection.Open();
                }
                cmd.ExecuteNonQuery();
                //StoredProcedure(); //刷新數據,加這個會報錯.
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message, ex);
            }
            finally
            {
                if (cmd.Connection.State == ConnectionState.Open)
                {
                    cmd.Connection.Close();
                }
            }
        }

        private void StoredProcedure()
        {
            throw new NotImplementedException();
        }
        #endregion

        #region 執行SQL語句的SqlCommand對象,返回DataSet
        /// <summary>
        /// 執行SQL語句的SqlCommand對象,返回DataSet
        /// </summary>
        /// <param name="cmd"></param>
        /// <returns></returns>
        public DataSet GetDS(SqlCommand cmd)
        {
            try
            {
                if (cmd.Connection.State != ConnectionState.Open)
                {
                    cmd.Connection.Open();
                }
                SqlDataAdapter adapter = new SqlDataAdapter(cmd);
                DataSet ds = new DataSet();
                adapter.Fill(ds);
                return ds;
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message, ex);

            }
            finally
            {
                if (cmd.Connection.State == ConnectionState.Open)
                {
                    cmd.Connection.Close();

                }
            }
        }
        #endregion
    }

　　二,带参数查询的存储过程:

　　  1,创建存储过程代码:

Create proc [dbo].[sp_SelectParUsers]
@Id int
as
begin
select * from tb_Users where UserId=@Id;
end

　　  2,项目中存储过程的调用代码:

View Code

public partial class SP_SelectWithPar : System.Web.UI.Page
    {
        DBClass dbc = new DBClass();
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                GridView1BindData(2);
            }
        }
        public void GridView1BindData(int Id)
        {
            SqlCommand cmd = dbc.GetCommandProc("sp_SelectParUsers");
            cmd.Parameters.AddWithValue("@Id",Id);
            DataSet ds = dbc.GetDS(cmd);
            GridView1.DataSource = ds.Tables[0].DefaultView;
            GridView1.DataBind();

        }
    }

　　三,新增的存储过程:

　　  1,创建存储过程的代码:

Create proc [dbo].[sp_InserUsers]
(
@UserName nvarchar(50),
@Pwd varchar(50)
)
as
begin
insert into tb_Users (UserName,pwd) values (@UserName,@Pwd);
end

　　  2,项目中对存储过程的调用代码:

View Code

public partial class SP_InsertUser : System.Web.UI.Page
    {
        DBClass dbc = new DBClass();
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void btnAdd_Click(object sender, EventArgs e)
        {
            AddUser();
        }
        public void AddUser()
        {
            SqlCommand cmd = dbc.GetCommandProc("sp_InserUsers");
            cmd.Parameters.AddWithValue("@UserName", txtUserName.Text.Trim());
            cmd.Parameters.AddWithValue("@Pwd", txtPwd.Text.Trim());
            if (txtUserName.Text.Trim() == "" || txtPwd.Text.Trim() == "")
            {
                Response.Write("<script>alert('用戶名和密碼不能為空!')</script>");
                return;
            }
            //todo:此处省略了对用户名是否存在的检测.
            dbc.ExecNonQuery(cmd);
            Response.Write("<script>alert('增加成功!')</script>");
        }
    }

　　四,删除数据的存储过程

　　  1,创建存储过程的代码:

Create proc [dbo].[sp_DeleteUsers]
(
@Id int
)
as
begin
delete from tb_Users where UserId=@Id;
end

　　  2,项目调用存储过程的代码:

View Code

public partial class SP_DeleteUsers : System.Web.UI.Page
    {
        DBClass dbc = new DBClass();
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void btnDelete_Click(object sender, EventArgs e)
        {
            DeleteUsers();
        }
        public void DeleteUsers()
        {
            SqlCommand cmd = dbc.GetCommandProc("sp_DeleteUsers");
            cmd.Parameters.AddWithValue("@Id",txtId.Text.Trim());
            if (txtId.Text.Trim() == "")
            {
                Response.Write("<script>alert('Id不能為空!')</script>");
                return;
            }
            dbc.ExecNonQuery(cmd);
            Response.Write("<script>alert('刪除成功!')</script>");
        }
    }

　　五,修改数据的存储过程:

　　  1,创建存储过程的代码:

Create proc [dbo].[sp_UpdateUsers]
(
@pwd varchar(50),
@UserId varchar(50)
)
as
begin
update tb_Users set pwd=@pwd where UserId=@UserId;
end

　　 2,项目对存储过程的调用代码:

View Code

public partial class SP_UpdateUsers : System.Web.UI.Page
    {
        DBClass dbc = new DBClass();
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void btnUpdate_Click(object sender, EventArgs e)
        {
            UpdateUsersById();
        }
        public void UpdateUsersById()
        {
            SqlCommand cmd = dbc.GetCommandProc("sp_UpdateUsers");
            cmd.Parameters.AddWithValue("@UserId",txtId.Text.Trim());
            cmd.Parameters.AddWithValue("@pwd", txtPwd.Text.Trim());
            if (txtId.Text.Trim() == "" || txtPwd.Text.Trim() == "")
            {
                Response.Write("<script>alert('Id和密碼不能為空!')</script>");
                return;
            }
            if (CheckUserId()) //檢查UserId是否存在,如果存在才執行修改動作,否則提供Id不存在并退出方法.
            {
                dbc.ExecNonQuery(cmd);
                Response.Write("<script>alert('密碼修改成功!')</script>");
            }
            else
            {
                Response.Write("<script>alert('Id不存在!')</script>");
                return;
            }
        }
        public bool CheckUserId()
        {
            SqlCommand cmd = dbc.GetCommandProc("sp_SelectParUsers");
            cmd.Parameters.AddWithValue("@Id", txtId.Text.Trim());
            DataSet ds = dbc.GetDS(cmd);
            if (ds.Tables[0].Rows.Count < 1)
            {
                return false;
            }
            else
            {
                return true;  
            }
        }
    }

  以上就是常用的存储过程的创建及调用方法了,在这里记录下来,一方面与各位园友分享,欢迎各位园友与我交流,另一方面,记录在这里方便自己以后温习.