1using System;
  2using System.Data;
  3using System.Configuration;
  4using System.Collections;
  5using System.Web;
  6using System.Web.Security;
  7using System.Web.UI;
  8using System.Web.UI.WebControls;
  9using System.Web.UI.WebControls.WebParts;
 10using System.Web.UI.HtmlControls;
 11using System.Windows.Forms;
 12
 13using LeaveMessageMVC.MVC.BusinessLogicLayer.ParameterInformation;
 14using LeaveMessageMVC.MVC.DataBaseControlLayer;
 15using LeaveMessageMVC.MVC.BusinessLogicLayer;
 16using LeaveMessageMVC.MVC.BusinessLogicLayer.SomeFunctions;
 17
 18public partial class LeaveMessagePage : System.Web.UI.Page
 19...{
 20    LeaveMessageMVC.MVC.BusinessLogicLayer.ParameterInformation.LeaveMessagePara LMP = new LeaveMessagePara();
 21
 22    protected void Page_Load(object sender, EventArgs e)
 23    ...{
 24        //禁止浏览器的缓存，防止用户发布信息后点“后退”返回到原来未发布的状态（虽然实际数据已写入DB）
 25        Response.Cache.SetNoStore();
 26        Response.Cache.SetNoServerCaching();
 27
 28        Response.Write("<script type=\"text/javascript\">");
 29        Response.Write("function CtrlEnter(button){");
 30        Response.Write("if(event.ctrlKey && event.keyCode==13)document.all[button].click();}");
 31        Response.Write("var floor=" + Application["TableCount"] + ";");
 32        Response.Write("function NextFloor(){floor--;}");
 33        Response.Write("</script>");
 34
 35        if (!Page.IsPostBack)
 36        ...{
 37            LMBind();
 38            TBcontents.Attributes.Add("onkeydown", "CtrlEnter('Submit');");
 39
 40            if (Session["BUser"] != null)
 41            ...{
 42                TBuser.Text = Session["BUser"].ToString();
 43                //Session["BUser"] = null;
 44            }
 45            if (Session["QQorMSN"] != null)
 46            ...{
 47                TBQQMSN.Text = Session["QQorMSN"].ToString();
 48                //Session["QQorMSN"] = null;
 49            }
 50        }
 51    }
 52
 53    protected void Submit_Click(object sender, EventArgs e)
 54    ...{
 55        if (TBuser.Text == "" || TBQQMSN.Text == "" || TBcontents.Text == "")
 56        ...{
 57            Response.Write("<Script Language=JavaScript>alert(\"提示：用户名、QQ/MSN、留言信息3项必填。\")</Script>");
 58            Response.Write("<Script Language=JavaScript>this.location.href=\"#IwantToSay\"</script>");
 59
 60            Response.Write("<script>setTimeout(\"document.all.TBuser.focus();\",500);</script>");
 61            //上行代码也可写成两段
 62            //Response.Write("<script>setTimeout(\"Focus()\",1000);</script>");
 63            //Response.Write("<script>function Focus(){document.all.TBuser.focus();}</script>");
 64
 65            //TBuser.Focus();   //用这个在调试时总是提示内存不可读
 66        }
 67        else
 68        ...{
 69            LMP.ID = AutoCreateID.NewID();
 70            LMP.User = FormatString.FormatStr(TBuser.Text);
 71            LMP.QQMSN = FormatString.FormatStr(TBQQMSN.Text);
 72            LMP.Title = FormatString.FormatStr(TBtitle.Text);
 73            LMP.Contents = FormatString.FormatStr(TBcontents.Text);
 74            LMP.WriteBack = "";
 75            LMP.SubmitTime = DateTime.Now;
 76
 77            if (LMManage.AddNewLeaveMessage(LMP))
 78            ...{
 79                //每次向数据库写入一条留言成功，就使保存 表行数 的全局变量 +1
 80                Application.Lock();
 81                Application["TableCount"] = (int)Application["TableCount"] + 1;
 82                Application.UnLock();
 83
 84                TBtitle.Text = "";
 85                TBcontents.Text = "";
 86                LMBind();
 87
 88                //采用网页重定向的方法，防止用户提交后刷新页面又提示再一次提交
 89                //（同时注意保留用户已填写的用户名和联系方式）
 90                Session["BUser"] = LMP.User;
 91                Session["QQorMSN"] = LMP.QQMSN;
 92                Response.Redirect("index.aspx");                  //为解决刷新问题
 93            }
 94            else Response.Redirect("ShowErrorMsg.aspx?name=" + LMP.User);
 95        }
 96    }
 97
 98    protected void LMBind()
 99    ...{
100        if(!DBControl.AccessConnection)
101            LeaveMessageList.DataSource = LMManage.GetLeaveMessage(10);
102        else
103            LeaveMessageList.DataSource = LMManage.aGetLeaveMessage(10);
104        LeaveMessageList.DataBind();
105    }
106
107    protected string ShortString(string content, string id)
108    ...{
109        //限制显示“留言内容”的字符数，避免篇幅太大
110        if (content.Length > 180)
111            return content.Substring(0, 150) + "...&nbsp;&nbsp;" + "<a href=\"ShowDetail.aspx?d_ID=" + id + "\">阅读全文</a>";
112        else
113            return content;
114
115    }
116
117    protected void LeaveMessageList_ItemCommand(object sender, DataListCommandEventArgs e)
118    ...{
119        //if (TBuser.Text == "")
120        //{
121        //    Response.Write("<Script Language=JavaScript>alert(\"提示：回复他人留言，你必须在下面的留言框输入您的用户名。\");</script>");
122        //    Response.Write("<Script Language=JavaScript>this.location.href=\"#IwantToSay\"</script>");
123
124        //    Response.Write("<script>setTimeout(\"document.all.TBuser.focus();\",1000);</script>");
125        //    //上行代码也可写成两段
126        //    //Response.Write("<script>setTimeout(\"Focus()\",1000);</script>");
127        //    //Response.Write("<script>function Focus(){document.all.TBuser.focus();}</script>");
128
129        //    //TBuser.Focus();   //用这个在调试时总是提示内存不可读
130        //}
131
132        ...#region
133        //如果用户在留言页面已经输入了用户名和QQMSN，则将这些信息传到回复页
134        //if (TBuser.Text != "")
135            Session["YourName"] = FormatString.FormatStr(TBuser.Text);
136        //if (TBQQMSN.Text != "")
137            Session["QQMSN"] = FormatString.FormatStr(TBQQMSN.Text);
138
139        //用变量保存“回复”按键所映射的相应留言的ID（参看LinkButton的CommandName属性）
140        string ButtoMappedID = e.CommandName.ToString();
141        //Response.Write(ButtoMappedID);     
142        Session["OwnerID"] = ButtoMappedID;
143        Response.Redirect("WriteBack.aspx?index=y"); //(1)
144        /**//*//(2)用JavaScript实现自动链接页面
145        Response.Write("<script language=JavaScript>window.location=\"Default2.aspx\"</script>");*/
146        #endregion
147    }
148}
149