系统源代码一、登录界面代码using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class login : System.Web.UI.Page{protected void txtid_Click(object sender, EventArgs e){txtid.Text = "";txtpassword.Text = "";}protected void Button1_Click(object sender, EventArgs e){string strconn = ConfigurationManager.AppSettings["connStr"];SqlConnection conn = new SqlConnection(strconn);conn.Open();DataSet ds=new DataSet () ;SqlDataAdapter da = new SqlDataAdapter("select * from users where userid='" + txtid.Text + "' and userpwd='" + txtpassword.Text + "'", conn);da.Fill(ds);if (ds.Tables[0].Rows.Count==0){Label3 .Text ="账号或密码错误，请重新输入！";}else{Session ["userid"]=txtid .Text ;Session["userpwd"] = txtpassword.Text;Session["username"] =ds.Tables[0].Rows[0]["username"].ToString();Session["userpower"] =ds.Tables[0].Rows[0]["userpower"].ToString();if (Session["userpower"].ToString () == "0"){Response.Redirect("admin/index.aspx");}else if (Session["userpower"].ToString() == "1") {Response.Redirect("student/index.aspx");}else{Label3.Text = "对不起，权限验证失败";}}conn.Close();ds.Clear ();}}二、添加课程页面代码using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class addcourse : System.Web.UI.Page{SqlCommand mycmd;SqlConnection conn;protected void Page_Load(object sender, EventArgs e){courseid.Attributes.Add("onblur", "checkcourseid()");string strconn = ConfigurationManager.AppSettings["connStr"]; conn = new SqlConnection(strconn);}protected void Button1_Click(object sender, EventArgs e){if (courseid.Text.ToString() == ""){Label7.Text = "课程号不能为空";}else{string sqlstr = "";sqlstr = "insert intocourse(courseid,coursename,coursetime,fen,type,teacher)values('" + courseid.Text + "','" + coursename.Text + "','" + coursetime.Text + "','" + fen.Text + "','" + type.Text + "','" + teacher.Text + "')";conn.Open();mycmd = new SqlCommand(sqlstr, conn);mycmd.Dispose();try{mycmd.ExecuteNonQuery();Response.Write("<script>javascript:alert('添加成功!!!');</script>");}catch (SqlException){Response.Write("<script>javascript:alert('添加失败!!!');</script>");}finally{conn.Close();sqlstr = "";}}}protected void Button2_Click(object sender, EventArgs e){courseid.Text = "";coursename.Text = "";coursetime.Text = "";fen.Text = "";type.Text = "";}protected void Button3_Click(object sender, EventArgs e) {Response.Redirect("course.aspx");}}三、添加成绩程序代码using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class addscore : System.Web.UI.Page{SqlCommand mycmd;SqlConnection conn;protected void Page_Load(object sender, EventArgs e){string strconn = ConfigurationManager.AppSettings["connStr"];conn = new SqlConnection(strconn);}protected void Button1_Click(object sender, EventArgs e){if (userid.SelectedValue .ToString ()== ""){Label11.Text = "学号不能为空";}else{string sqlstr = "";sqlstr = "insert intoscore(userid,username,courseid,coursename,score,[year])values('" +userid.SelectedValue + "','" + username.Text + "','" +txtcourseid.SelectedValue + "','" + coursename.Text + "','" + score.Text + "','" + txtyear.SelectedValue + "')";conn.Open();mycmd = new SqlCommand(sqlstr, conn);mycmd.Dispose();try{mycmd.ExecuteNonQuery();Response.Write("<script>javascript:alert('添加成功!!!');</script>");}catch (SqlException){Response.Write("<script>javascript:alert('添加失败!!!');</script>");}finally{conn.Close();sqlstr = "";}}}protected void Button2_Click(object sender, EventArgs e){username.Text = "";coursename.Text = "";score.Text = "";txtyear.Text = "";}protected void Button3_Click(object sender, EventArgs e){Response.Redirect("score.aspx");}protected void userid_SelectedIndexChanged(object sender, EventArgs e) {string sqlstr = "";sqlstr = "select username from students where userid='" +userid.SelectedValue + "'";conn.Open();mycmd = new SqlCommand(sqlstr, conn);mycmd.Dispose();SqlDataReader da;da = mycmd.ExecuteReader();while (da.Read()){username.Text = da["username"].ToString();}}protected void txtcourseid_SelectedIndexChanged(object sender, EventArgs e){string sqlstr = "";sqlstr = "select coursename from course where courseid='" + txtcourseid.SelectedValue + "'";conn.Open();mycmd = new SqlCommand(sqlstr, conn);mycmd.Dispose();SqlDataReader da;da = mycmd.ExecuteReader();while (da.Read()){coursename.Text = da["coursename"].ToString();}}}四、添加学生程序代码using System;using System.IO;using System.Text;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class addstudent : System.Web.UI.Page{SqlCommand mycmd;protected void Page_Load(object sender, EventArgs e){userid.Attributes.Add("onblur", "checkuserid()");string strconn = ConfigurationManager.AppSettings["connStr"];SqlConnection conn = new SqlConnection(strconn);}protected void Button1_Click(object sender, EventArgs e){if (userid.Text.ToString() == "")return;string strconn = ConfigurationManager.AppSettings["connStr"];SqlConnection conn = new SqlConnection(strconn);string sqlstr = "";string sql = "";sqlstr = "insert intostudents(userid,username,sex,minzu,birthday,class,comefrom,beizhu,xuey,zhu any,tel,idc,zhengzmm,zhiw,huoj,weij)values('" + userid.Text + "','" + txtusername.Text + "','" + txtsex.SelectedItem.Value + "','" + txtminzu.Text+ "','" + txtbirthday.Text + "','" + txtclass.Text + "','" + txtcomefrom.Text + "','" + txtbeizhu.Text + "','" + txtxuey.SelectedValue + "','" + txtzhuany.SelectedValue + "','" + txttel.Text + "','" + txtidc.Text + "','" + txtzzmm.SelectedValue + "','" + txtzhiw.Text + "','" + txthuoj.Text + "','" + txtweij.Text + "')";conn.Open();mycmd = new SqlCommand(sqlstr, conn);mycmd.Dispose();string name = this.FileUpload1.FileName;//获取上传文件的名称string type = name.Substring(stIndexOf("\\") + 1);//获取上传文件的后缀string ipath = Server.MapPath("images/") +DateTime.Now.ToString("yyyyMMddhhmmss") + name;string wpath = "images\\" + DateTime.Now.ToString("yyyyMMddhhmmss") + name;string query1 = "insert into images(userid,path) values('" + userid.Text + "',path)";FileUpload1.SaveAs(ipath); //服务器保存路径SqlCommand cm = new SqlCommand(query1);cm.Connection = conn;cm.Parameters.Add("path", SqlDbType.VarChar, 50);cm.Parameters["path"].Value = wpath;cm.ExecuteNonQuery();// this.lb_info.Text = "上传成功！";try{mycmd.ExecuteNonQuery();string sqlstr1 = "";sqlstr1 = "insert into users(userid,username)values('" + userid.Text + "','" + txtusername.Text + "') ";SqlCommand mycmd1 = new SqlCommand(sqlstr1, conn); mycmd1.Dispose();try{mycmd1.ExecuteNonQuery();Response.Write("<script>javascript:alert('添加成功!!!');</script>");}catch (SqlException){Response.Write("<script>javascript:alert('添加失败!!!');</script>");}finally{sqlstr1 = "";}}catch (SqlException){Response.Write("<script>javascript:alert('添加失败!!!');</script>");}finally{conn.Close();sqlstr = "";}}protected void Button2_Click(object sender, EventArgs e){userid.Text = "";txtusername.Text = "";txtminzu.Text = "";txtbirthday.Text = "";txtclass.Text = "";txtcomefrom.Text = "";txtbeizhu.Text = "";}protected void Button3_Click(object sender, EventArgs e) {Response.Redirect("student.aspx");}}五、检查课程号唯一性程序代码using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class checkcourseid : System.Web.UI.Page{protected void Page_Load(object sender, EventArgs e){Response.Expires = 0;string strconn = ConfigurationManager.AppSettings["connStr"];SqlConnection conn = new SqlConnection(strconn);string nam = Request.QueryString["name"].ToString();string sql = "select courseid from course where courseid='" + nam + "'";SqlCommand DBHelper;DBHelper = new SqlCommand(sql, conn);conn.Open();SqlDataReader dr = DBHelper.ExecuteReader();if (dr.Read()){Response.Write("<b class='Error'>该课程号已经存在，请换一个</b>");}else{Response.Write("<b class='Right'>该课程号可以使用</b>"); }dr.Close();}}六、检查学号唯一性程序代码using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class checkuser : System.Web.UI.Page{protected void Page_Load(object sender, EventArgs e){Response.Expires = 0;string strconn = ConfigurationManager.AppSettings["connStr"];SqlConnection conn = new SqlConnection(strconn);string nam = Request.QueryString["name"].ToString();string sql = "select userid from students where userid='" + nam + "'";SqlCommand DBHelper;DBHelper = new SqlCommand(sql, conn);conn.Open();SqlDataReader dr = DBHelper.ExecuteReader();if (dr.Read()){Response.Write("<b class='Error'>该学号已经存在，请换一个</b>");}else{Response.Write("<b class='Right'>该学号可以使用</b>"); }dr.Close();}}七、课程信息程序代码using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class course : System.Web.UI.Page{SqlConnection conn;SqlDataReader getdata;protected void Page_Load(object sender, EventArgs e){string strconn = ConfigurationManager.AppSettings["connStr"]; conn = new SqlConnection(strconn);SqlDataReader getdata;SqlCommand mycmd;DataSet ds = new DataSet();string sql = "";sql = "select * from course order by courseid";mycmd = new SqlCommand(sql, conn);conn.Open();getdata = mycmd.ExecuteReader();grdMain.DataSource = getdata;grdMain.DataBind();mycmd.Connection.Close();conn.Close();mycmd.Dispose();}protected void Button1_Click(object sender, EventArgs e){DataSet ds;SqlDataReader da;string strsql = "";SqlCommand cmd;conn.Open();strsql = "select * from course where courseid='" + courseid.Text + "'or coursename like '" + coursename.Text + "'";cmd = new SqlCommand(strsql, conn);da = cmd.ExecuteReader();Datagrid1.DataSource = da;Datagrid1.DataBind();conn.Close();cmd.Dispose();cmd.Connection.Close();}}八、编辑、删除学生信息程序代码using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class images_editstudent : System.Web.UI.Page{SqlCommand cmd;SqlCommand cmd2;protected void Page_Load(object sender, EventArgs e){if (!this.IsPostBack){string sql = "";SqlDataReader reader;string uid = "";uid = Page.Request["id"];string strconn = ConfigurationManager.AppSettings["connStr"]; SqlConnection conn = new SqlConnection(strconn);sql = "select * from students where userid='" + uid + "'";SqlCommand cmd;cmd = new SqlCommand(sql, conn);conn.Open();reader = cmd.ExecuteReader();while (reader.Read()){userid.Text = reader["userId"].ToString();txtusername.Text = reader["username"].ToString();txtsex.SelectedValue = reader["sex"].ToString();txtminzu.Text = reader["minzu"].ToString();txtbirthday.Text = reader["birthday"].ToString();txtclass.Text = reader["class"].ToString();txtcomefrom.Text = reader["comefrom"].ToString();txtxuey.Text = reader["xuey"].ToString();txtzhuany.Text = reader["zhuany"].ToString();txttel.Text = reader["tel"].ToString();txtidc.Text = reader["idc"].ToString();}cmd.Dispose();sql = "";conn.Close();}}protected void Button1_Click(object sender, EventArgs e){string uid="";uid=Page .Request ["id"];string strconn = ConfigurationManager.AppSettings["connStr"];SqlConnection conn = new SqlConnection(strconn);string sql="";sql = "update students set userid='" + userid.Text + "',username='" + txtusername.Text + "',minzu='" + txtminzu.Text + "',sex='" +txtsex.SelectedItem.Value + "',birthday='" + txtbirthday.Text + "',class='" + txtclass.Text + "',comefrom='" + txtcomefrom.Text + "',beizhu='" +txtbeizhu.Text + "',xuey='" + txtxuey.Text + "',zhuany='" + txtzhuany.Text + "',tel='" + txttel.Text + "',idc='" + txtidc.Text + "',zhengzmm='" + txtzzmm.SelectedValue + "'where userid='" + uid + "'";cmd=new SqlCommand (sql,conn );conn.Open();try{cmd.ExecuteNonQuery();Label11.Style["color"] = "blue";Label11.Text = "编辑成功";Response.Write("<script>javascript:alert('编辑成功!!!');</script>");}catch(SqlException ){Label11.Text = "编辑失败";Label11.Style["color"] = "red";}cmd.Dispose();conn.Close();}protected void Button2_Click(object sender, EventArgs e){string sql = "";string uid = "";string sqlall = "";uid = Page.Request["id"];string strconn = ConfigurationManager.AppSettings["connStr"];SqlConnection conn = new SqlConnection(strconn);sql = "delete from students where userid='" + uid + "'";sqlall = "delete from images where userid='" + uid + "'";cmd = new SqlCommand(sql, conn);cmd2 = new SqlCommand(sqlall,conn);conn.Open();try{cmd.ExecuteNonQuery();string sql1 = "";sql1 = "delete from users where userid='" + uid + "'"; SqlCommand cmd1 = new SqlCommand(sql1, conn);cmd1.Dispose();try{cmd1.ExecuteNonQuery();Label11.Style["color"] = "blue";Label11.Text = "删除成功";Response.Write("<script>javascript:alert('删除成功!!!');</script>");}catch (SqlException){Label11.Text = "删除失败";Response.Write("<script>javascript:alert('删除失败!!!');</script>");}finally{sql1 = "";}}catch(SqlException ){Label11.Text = "删除失败";Label11.Style["color"] = "red";}cmd.Dispose();conn.Close();userid.Text = "";txtusername.Text = "";txtminzu.Text = "";txtbirthday.Text = "";txtclass.Text = "";txtcomefrom.Text = "";txtbeizhu.Text = "";txtxuey.Text = "";txtzhuany.Text = "";txttel.Text = "";txtidc.Text = "";}protected void Button3_Click(object sender, EventArgs e) {Response.Redirect("student.aspx");}}九、编辑、删除课程信息程序代码using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class editcourse : System.Web.UI.Page{SqlCommand cmd;protected void Page_Load(object sender, EventArgs e){if (!this.IsPostBack){string sql = "";SqlDataReader reader;string uid = "";uid = Page.Request["id"];string strconn = ConfigurationManager.AppSettings["connStr"]; SqlConnection conn = new SqlConnection(strconn);sql = "select * from course where courseid='" + uid + "'"; SqlCommand cmd;cmd = new SqlCommand(sql, conn);conn.Open();reader = cmd.ExecuteReader();while (reader.Read()){courseid.Text = reader["courseid"].ToString();coursename.Text = reader["coursename"].ToString();coursetime.Text = reader["coursetime"].ToString();fen.Text = reader["fen"].ToString();type.Text = reader["type"].ToString();type.Text = reader["teacher"].ToString();}cmd.Dispose();sql = "";conn.Close();}}protected void Button1_Click(object sender, EventArgs e){string uid = "";uid = Page.Request["id"];string strconn = ConfigurationManager.AppSettings["connStr"];SqlConnection conn = new SqlConnection(strconn);string sql = "";sql = "update course set courseid='" + courseid.Text + "',coursename='" + coursename.Text + "',coursetime='" + coursetime.Text + "',fen='" + fen.Text + "',type='" + type.Text + "',teacher='" + teacher.Text + "' where courseid='" + uid + "'";cmd = new SqlCommand(sql, conn);conn.Open();try{cmd.ExecuteNonQuery();Label7.Text = "编辑成功";Response.Write("<script>javascript:alert('编辑成功!!!');</script>");}catch (SqlException){Label7.Text = "编辑失败";}cmd.Dispose();conn.Close();}protected void Button2_Click(object sender, EventArgs e){string sql = "";string uid = "";uid = Page.Request["id"];string strconn = ConfigurationManager.AppSettings["connStr"]; SqlConnection conn = new SqlConnection(strconn);sql = "delete from course where courseid='" + uid + "'";cmd = new SqlCommand(sql, conn);conn.Open();try{cmd.ExecuteNonQuery();Label7.Text = "删除成功";Response.Write("<script>javascript:alert('删除成功!!!');</script>");}catch (SqlException){Label7.Text = "删除失败";}cmd.Dispose();conn.Close();courseid.Text = "";coursename.Text = "";coursetime.Text = "";fen.Text = "";type.Text = "";}protected void Button3_Click(object sender, EventArgs e) {Response.Redirect("course.aspx");}}十、编辑、删除成绩信息程序代码using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class editscore : System.Web.UI.Page{SqlCommand cmd;SqlConnection conn;protected void Page_Load(object sender, EventArgs e){if (!this.IsPostBack){string sql = "";SqlDataReader reader;string uid = "";uid = Page.Request["id"];string strconn = ConfigurationManager.AppSettings["connStr"]; conn = new SqlConnection(strconn);sql = "select * from score where id='" + uid + "'";SqlCommand cmd;cmd = new SqlCommand(sql, conn);conn.Open();reader = cmd.ExecuteReader();while (reader.Read()){id.Text = reader["id"].ToString();userid.Text = reader["userid"].ToString();username.Text = reader["username"].ToString();txtcourseid.Text = reader["courseid"].ToString();coursename.Text = reader["coursename"].ToString();score.Text = reader["score"].ToString();}cmd.Dispose();sql = "";conn.Close();}}protected void Button1_Click(object sender, EventArgs e){string uid = "";uid = Page.Request["id"];string sql = "";string strconn = ConfigurationManager.AppSettings["connStr"];conn = new SqlConnection(strconn);sql = "update score set userid='" + userid.SelectedValue +"',username='" + username.Text + "',courseid='" + txtcourseid.SelectedValue + "',coursename='" + coursename.Text + "',score='" + score.Text + "',[year]='" + txtyear.SelectedValue + "'where id='" + uid + "'";cmd = new SqlCommand(sql,conn );conn.Open();try{cmd.ExecuteNonQuery();Label11.Text = "编辑成功";Response.Write("<script>javascript:alert('编辑成功!!!');</script>");}catch (SqlException){Label11.Text = "编辑失败";}cmd.Dispose();conn.Close();}protected void Button2_Click(object sender, EventArgs e){string sql = "";string uid = "";uid = Page.Request["id"];string strconn = ConfigurationManager.AppSettings["connStr"];conn = new SqlConnection(strconn);sql = "delete from score where id='" + uid + "'";cmd = new SqlCommand(sql, conn);conn.Open();try{cmd.ExecuteNonQuery();Label11.Text = "删除成功";Response.Write("<script>javascript:alert('删除成功!!!');</script>");}catch (SqlException){Label11.Text = "删除失败";}cmd.Dispose();conn.Close();id.Text = "";username.Text = "";coursename.Text = "";score.Text = "";}protected void Button3_Click(object sender, EventArgs e){Response.Redirect("score.aspx");}protected void userid_SelectedIndexChanged(object sender, EventArgs e){string strconn = ConfigurationManager.AppSettings["connStr"];conn = new SqlConnection(strconn);string sqlstr = "";sqlstr = "select username from students where userid='" +userid.SelectedValue + "'";conn.Open();cmd = new SqlCommand(sqlstr, conn);cmd.Dispose();SqlDataReader da;da = cmd.ExecuteReader();while (da.Read()){username.Text = da["username"].ToString();}}protected void txtcourseid_SelectedIndexChanged(object sender, EventArgs e){string strconn = ConfigurationManager.AppSettings["connStr"];conn = new SqlConnection(strconn);string sqlstr = "";sqlstr = "select coursename from course where courseid='" + txtcourseid.SelectedValue + "'";conn.Open();cmd = new SqlCommand(sqlstr, conn);cmd.Dispose();SqlDataReader da;da = cmd.ExecuteReader();while (da.Read()){coursename.Text = da["coursename"].ToString();}}}十一、修改密码程序代码using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class modify_pwd : System.Web.UI.Page{SqlConnection conn;protected void Page_Load(object sender, EventArgs e){string strconn = ConfigurationManager.AppSettings["connStr"]; conn = new SqlConnection(strconn);}protected void Button1_Click(object sender, EventArgs e){string sql="";。