ASPNET课程实验报告

《程序设计》课程实验报告实验课题：专业：计算机应用班级：指导教师：完成人：2011 年 5 月295.3 留言板public partial class liuyan : System.Web.UI.Page{protected void Page_Load(object sender, EventArgs e){}protected void Button1_Click(object sender, EventArgs e){if (Session["userID"] != null){if (TextBox1.Text == "" || TextBox2.Text == ""){Page.RegisterStartupScript("", "<script>alert('请输入留言主题和内容!');</script>");}else{try{string connstr =ConfigurationManager.ConnectionStrings["WShopConnectionString"].ConnectionStrin g;SqlConnection conn = new SqlConnection(connstr);conn.Open();SqlCommand cmd = new SqlCommand("Proc_InsertMessageInfo", conn);mandType = CommandType.StoredProcedure;SqlParameter para1 = new SqlParameter("@userID", SqlDbType.Int);para1.Value = Session["userID"].ToString();cmd.Parameters.Add(para1);SqlParameter para2 = new SqlParameter("@Heading",TextBox1.Text);cmd.Parameters.Add(para2);SqlParameter para3 = new SqlParameter("@Content", SqlDbType.NVarChar);para3.Value = TextBox2.Text;cmd.Parameters.Add(para3);SqlParameter para4 = new SqlParameter("@Time", SqlDbType.DateTime);para4.Value = DateTime.Now.ToShortDateString();cmd.Parameters.Add(para4);SqlParameter para5 = new SqlParameter("@flag", DbType.Int32); para5.Direction = ParameterDirection.Output;cmd.Parameters.Add(para5);cmd.ExecuteNonQuery();Page.RegisterStartupScript("", "<script>alert('发表成功!');</script>");conn.Close();}catch{ }}}else{Response.Redirect("denglu.aspx");}Response.Redirect("liuyan.aspx");}}5.4 商品查询protected void Button1_Click(object sender, EventArgs e){SqlDataSource2.SelectParameters.Clear();string str = SqlDataSource2.SelectCommand + "whereWaretype.typeID=@typeID";Parameter para1 = new Parameter("typeID", DbType.Int16);para1.DefaultValue = DropDownList1.SelectedItem.Value;SqlDataSource2.SelectParameters.Add(para1);if (TextBox1.Text != ""){str+="and Ware.Warename like '%'+@Warename+'%'";SqlDataSource2.SelectParameters.Add("Warename", TextBox1.Text); }GridView1.DataSourceID = null;SqlDataSource2.SelectCommand = str;GridView1.DataSourceID = "SqlDataSource2";}5.5 在线聊天protected void Page_Load(object sender, EventArgs e){if (Session["uName"] != null){lblOnlineNum.Text = "当前在线人数为" +Application["count"].ToString() + "人";txtChatRoom.Text = Application["chat"].ToString();lblName.Text = Session["uName"].ToString();}else{Response.Redirect("denglu.aspx");}}protected void btnSend_Click(object sender, EventArgs e){string tab = "";string newline = "\r";string newMessage = lblName.Text + ";" + tab + txtChat.Text + newline + Application["chat"];if (newMessage.Length > 500)newMessage = newMessage.Substring(0, 499);Application.Lock();Application["chat"] = newMessage;Application.UnLock();txtChat.Text = "";txtChatRoom.Text = Application["chat"].ToString(); }5.6 在线投票public partial class toupiao : System.Web.UI.Page{ArrayList cn = new ArrayList();protected void Page_Load(object sender, EventArgs e){//validatorlogin.Validator();if (Request.Cookies["vote"] != null){lblState.Text = "<b>您已经投过票了！</b>";}else{lblState.Text = "<b>您可以投票！</b>";}getVote();}protected void getVote(){string filePath = Server.MapPath("vote.txt");try{StreamReader sr = File.OpenText(filePath);string str = sr.ReadLine();string[] strvote = str.Split(',');foreach (string ss in strvote)cn.Add(int.Parse(ss));sr.Close();}catch (Exception ee){Response.Write("<script>alert('" + ee.Message + "')</script>");}}protected void putVote(){string filePath = Server.MapPath("vote.txt");try{StreamWriter sw = new StreamWriter(filePath, false);//false表示不是追加的string str = cn[0].ToString();for (int i = 1; i < cn.Count; i++){str += "," + cn[i].ToString();}sw.WriteLine(str);sw.Close();}catch (Exception ee){Response.Write("<script>alert('" + ee.Message + "')</script>");}}protected void btnVote_Click(object sender, EventArgs e){if (rbtlVote.SelectedIndex != -1){if (Request.Cookies["vote"] == null){int i = rbtlVote.SelectedIndex;cn[i] = int.Parse(cn[i].ToString()) + 1;putVote();Response.Cookies["vote"].Value = "vt";Response.Cookies["vote"].Expires = DateTime.Now.AddDays(14); Response.Write("<script>alert('投票成功！')</script>");}else{Response.Write("<script>alert('您已经投过票了！')</script>"); }}else{if (lblState.Text == "您已经投过票了！"){Response.Write("<script>alert('您已经投过票了！')</script>"); }else{Response.Write("<script>alert('请选择投票项！')</script>");}}}protected void btnView_Click(object sender, EventArgs e){lblView.Text = "各品牌的票数为：<br />";for (int i = 0; i < cn.Count; i++){lblView.Text += rbtlVote.Items[i].Text + ":" + cn[i].ToString() + "票<br />";}}}7. 参考文献[1] 李锡辉，王樱等. 网站开发实例教程[M]. 北京：清华大学出版社. 2011.3学网页设计之心得体会。