1using System;
  2using System.Collections;
  3using System.ComponentModel;
  4using System.Data;
  5using System.Data.SqlClient;
  6using System.Drawing;
  7using System.Web;
  8using System.Web.SessionState;
  9using System.Web.UI;
 10using System.Web.UI.WebControls;
 11using System.Web.UI.HtmlControls;
 12using System.Configuration;
 13
 14namespace STGROUP
 15...{
 16    /**//// <summary>
 17    /// ST_addgrade 的摘要说明。
 18    /// </summary>
 19    public class ST_addgrade : System.Web.UI.Page
 20    ...{
 21        protected System.Web.UI.WebControls.TextBox st_tbx_studentid;
 22        protected System.Web.UI.WebControls.Button st_btn_add;
 23        protected System.Web.UI.WebControls.Label st_lbl_note;
 24        protected System.Web.UI.WebControls.TextBox st_tbx_term;
 25        protected System.Web.UI.WebControls.CustomValidator st_cv_id;
 26        protected System.Web.UI.WebControls.DropDownList st_ddl_course;
 27        protected System.Web.UI.WebControls.TextBox st_tbx_grade;
 28        SqlConnection st_conn;
 29        private void Page_Load(object sender, System.EventArgs e)
 30        ...{
 31            string st_connstr= ConfigurationSettings.AppSettings["st_dbconn"];
 32            // 在此处放置用户代码以初始化页面
 33            st_conn=new SqlConnection(st_connstr);    
 34        }
 35
 36        Web Form Designer generated code#region Web Form Designer generated code
 37        override protected void OnInit(EventArgs e)
 38        ...{
 39            //
 40            // CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。
 41            //
 42            InitializeComponent();
 43            base.OnInit(e);
 44        }
 45        
 46        /**//// <summary>
 47        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
 48        /// 此方法的内容。
 49        /// </summary>
 50        private void InitializeComponent()
 51        ...{    
 52            this.st_tbx_studentid.TextChanged += new System.EventHandler(this.st_tbx_studentid_TextChanged);
 53            this.st_cv_id.ServerValidate += new System.Web.UI.WebControls.ServerValidateEventHandler(this.st_cv_id_ServerValidate);
 54            this.st_btn_add.Click += new System.EventHandler(this.st_btn_add_Click);
 55            this.Load += new System.EventHandler(this.Page_Load);
 56
 57        }
 58        #endregion
 59
 60        private void st_btn_add_Click(object sender, System.EventArgs e)
 61        ...{
 62            string st_sqlstr="update ST_student_course set ST_Student_grade=@Student_grade where ST_Student_id=@Student_id and  ST_Course_id=@Course_id and ST_Course_year=@Course_year";
 63             SqlCommand st_comm=new SqlCommand(st_sqlstr,st_conn);
 64             st_comm.Parameters.Add(new SqlParameter("@Student_id",SqlDbType.VarChar,50));
 65             st_comm.Parameters["@Student_id"].Value=st_tbx_studentid.Text;
 66             st_comm.Parameters.Add(new SqlParameter("@Course_id",SqlDbType.VarChar,50));
 67             st_comm.Parameters["@Course_id"].Value=st_ddl_course.SelectedItem.Value;
 68             st_comm.Parameters.Add(new SqlParameter("@Course_year",SqlDbType.Char,10));
 69             st_comm.Parameters["@Course_year"].Value=st_tbx_term.Text;
 70            st_comm.Parameters.Add(new SqlParameter("@Student_grade",SqlDbType.Int,4));
 71            st_comm.Parameters["@Student_grade"].Value=st_tbx_grade.Text;
 72             st_comm.Connection.Open();
 73            try
 74            ...{
 75                st_comm.ExecuteNonQuery();
 76                Response.Redirect("ST_grade_manage.aspx");
 77                
 78            }
 79            catch(SqlException)
 80            ...{
 81                st_lbl_note.Text="添加失败";
 82                st_lbl_note.Style["color"]="red";
 83            }
 84             st_comm.Connection.Close();            
 85             
 86        }
 87        
 88
 89        private void st_cv_id_ServerValidate(object source, System.Web.UI.WebControls.ServerValidateEventArgs args)
 90        ...{
 91            string st_connstr= ConfigurationSettings.AppSettings["st_dbconn"];
 92            st_conn=new SqlConnection(st_connstr);
 93            st_conn.Open();
 94            string st_sqlstr="select * from ST_student where ST_Student_id='"+st_tbx_studentid.Text+"'";
 95            SqlCommand st_comm=new SqlCommand(st_sqlstr,st_conn);
 96            SqlDataReader st_dr=st_comm.ExecuteReader();
 97            if(st_dr.Read())
 98            ...{
 99                args.IsValid=true;
100            }
101            else
102            ...{
103                args.IsValid=false;
104            }
105            st_conn.Close();
106        
107        }
108
109
110
111        private void st_tbx_studentid_TextChanged(object sender, System.EventArgs e)
112        ...{        
113            //课程名称下拉列表框绑定
114            string st_connstr= ConfigurationSettings.AppSettings["st_dbconn"];
115            SqlConnection st_conn0=new SqlConnection(st_connstr);
116                st_conn0.Open ();
117                string st_sql1="select ST_course.* from ST_student_course,ST_course where ST_student_course.ST_Student_id='"+st_tbx_studentid.Text+"'and ST_student_course.ST_Course_id=ST_course.ST_Course_id";
118                SqlCommand st_comm1=new SqlCommand  (st_sql1,st_conn0);
119                SqlDataReader st_dr1=st_comm1.ExecuteReader ();
120                while(st_dr1.Read ())
121                ...{
122                    st_ddl_course.Items .Add (new ListItem(st_dr1["ST_Course_name"].ToString() ,st_dr1["ST_Course_id"].ToString()) );
123                }
124                st_conn0.Close ();
125            
126        }
127
128        
129    }
130}
131