简易留言板
来源：互联网 发布：linux怎么改环境变量 编辑：程序博客网 时间：2024/04/29 11:00
<asp:DataList ID="DataList1" runat="server" Style="position: relative; background-color: #ffcc66; left: 0px; top: 5px;"> <ItemTemplate> <table border="0" cellpadding="0" cellspacing="0" style="border-top: #e8e8e8 1px solid; left: 1px; width: 457px; position: relative; top: 0px; height: 32px"> <tr> <td style="background-image: url(images/showbj.gif); height: 27px; border-left: #e8e8e8 1px solid;" align="center"> </td> <td align="right" colspan="2" style="border-right: #e8e8e8 1px solid; background-image: url(images/showbj.gif); width: 978px; height: 27px; background-color: #66cc66;"> <div style="left: -2px; width: 223px; position: relative; top: 8px; height: 26px; text-align: left"> 发布时间：<%# Eval("留言时间")%></div> </td> </tr> </table> <table border="0" cellpadding="0" cellspacing="0" style="left: 1px; width: 470px; position: relative; top: 0px; border-right: #e8e8e8 1px solid; border-left: #e8e8e8 1px solid; height: 100%;"> <tr> <td style="width: 50px; border-right: #e8e8e8 1px solid; height: 122px;" align="center"> <div style="width: 100px; position: relative; height: 100px; z-index: 100;"> <img alt="a" style="position: relative; height: 93px;" src='<%# Eval("头像")%>' /> </div> <asp:Label ID="Label1" runat="server" Style="z-index: 100; left: 15px; position: absolute; top: 107px" Text='<%# Eval("昵称") %>' Width="74px"></asp:Label> </td> <td style="width: 316px; border-bottom: #e8e8e8 1px solid; height: 122px"> <div style="left: 7px; width: 337px; position: relative; top: -1px; text-align: left; height: 82px; z-index: 101; color: #000000;"> <%# Eval("内容")%> <br />——————————————————<br /> <table style="z-index: 100; left: 2px; width: 333px; position: absolute; top: 37px"> <tr> <td style="width: 100px; color: #ff0033;">管理员回复：<%# Eval("管理员回复")%> </td> </tr> </table> </div> <table style="z-index: 102; left: 115px; width: 342px; position: absolute; top: 98px"> <tr> <td style="width: 100px; height: 16px;"> <asp:LinkButton ID="LinkButton1" runat="server" Height="18px" Style="z-index: 100; left: 145px; position: absolute; top: 4px" Width="88px" OnClick="LinkButton1_Click">发表新留言</asp:LinkButton> <asp:LinkButton ID="lbtnReply" runat="server" CommandArgument='<%# Eval("昵称")+","+Eval("留言时间")%>' OnCommand="lbtnReply_Command" Style="z-index: 101; left: 233px; position: absolute; top: 4px" Width="39px">回复</asp:LinkButton> <asp:LinkButton ID="lbtnDelete" runat="server" CommandArgument='<%# Eval("昵称")+","+Eval("留言时间")%>' OnCommand="lbtnDelete_Command" Style="z-index: 103; left: 280px; position: absolute; top: 3px" Width="41px">删除</asp:LinkButton> </td> </tr> </table> </td> </tr> </table> </ItemTemplate> <SeparatorTemplate> <br /> </SeparatorTemplate> </asp:DataList><td align="right" style="height: 26px; width: 496px; text-align: left;"> 共<asp:Label ID="lblMesTotal" runat="server" Style="position: relative" Text="Label"></asp:Label>条留言 第<asp:Label ID="lblPageCur" runat="server" Style="position: relative" Text="Label"></asp:Label>页 共<asp:Label ID="lblPageTotal" runat="server" Style="position: relative" Text="Label"></asp:Label>页 <asp:Button ID="Button3" runat="server" Style="position: relative" Text="首页" OnClick="Button3_Click" /> <asp:Button ID="Button1" runat="server" Style="position: relative" Text="上一页" OnClick="Button1_Click" /> <asp:Button ID="Button2" runat="server" Style="position: relative" Text="下一页" OnClick="Button2_Click" /> <asp:Button ID="Button4" runat="server" Style="position: relative" Text="尾页" OnClick="Button4_Click" /> 转到<asp:DropDownList ID="DropDownList1" runat="server" Style="position: relative"> </asp:DropDownList> <asp:Button ID="Button5" runat="server" Style="position: relative" Text="GO" OnClick="Button5_Click" /></td>后台代码：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 reply_show : System.Web.UI.Page{ string curPage; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { this.lblPageCur.Text = "1";//不能放到dataGridBind()后面,不然lblPageCur.Text没有被初始化,出错 dataGridBind(); } } public void dataGridBind() { curPage =this.lblPageCur.Text; SqlConnection conn = DB.createCon(); SqlCommand cmd = new SqlCommand(); cmd.CommandText = "select * from [liuyan] order by 留言时间 desc"; cmd.Connection = conn; SqlDataAdapter sda = new SqlDataAdapter(); sda.SelectCommand = cmd; DataSet ds = new DataSet(); sda.Fill(ds,"liuyan"); PagedDataSource pds = new PagedDataSource(); pds.AllowPaging = true; pds.PageSize = 4; pds.DataSource = ds.Tables["liuyan"].DefaultView; pds.CurrentPageIndex = Convert.ToInt32(curPage) - 1; this.lblPageTotal.Text = pds.PageCount.ToString(); this.Button1.Enabled = true; this.Button2.Enabled = true; if (curPage == "1") { this.Button1.Enabled = false; } if (curPage == pds.PageCount.ToString()) { this.Button2.Enabled = false; } this.DataList1.DataSource = pds; this.DataList1.DataBind(); cmd.CommandText = "select count(*) from liuyan"; this.lblMesTotal.Text = Convert.ToString(cmd.ExecuteScalar()); int a = pds.PageCount; for(int i=1;i<=a;i++) { this.DropDownList1.Items.Add(i.ToString()); } } protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e) { LinkButton dele=(LinkButton)(e.Item.FindControl("lbtnDelete")); if (dele != null) { dele.Attributes.Add("onclick","return confirm('确定删除吗?')"); } } protected void lbtnDelete_Command(object sender, CommandEventArgs e) { if(Session["admin"]!=null) { SqlCommand cmd = new SqlCommand(); cmd.Connection = DB.createCon(); string[] estr = e.CommandArgument.ToString().Split(','); string userID = Convert.ToString(estr[0]); string time = Convert.ToString(estr[1]); cmd.CommandText = "delete from [liuyan] where 昵称='"+userID+"'and 留言时间='"+time+"'"; if (cmd.ExecuteNonQuery() > 0) { Response.Write("<script>alert('删除成功！');window.location=window.location;</script>"); } else { Response.Write("<script>alert('删除失败！');window.location=window.location;</script>"); } } else { Response.Write("<script>alert('对不起,只有管理员才允许删除留言,如果你是管理员,请先登陆！');window.location.href='login.aspx';</script>"); } } protected void lbtnReply_Command(object sender, CommandEventArgs e) { if (Session["admin"] != null) { string[] estr = e.CommandArgument.ToString().Split(','); string userID = Convert.ToString(estr[0]); string time = Convert.ToString(estr[1]); Response.Redirect("reply.aspx?userID="+userID+"&time="+time+""); } else { Response.Write("<script>alert('对不起,只有管理员才允许回复留言,如果你是管理员,请先登陆！');window.location.href='login.aspx';</script>"); } } protected void Button1_Click(object sender, EventArgs e) { this.lblPageCur.Text = Convert.ToString(Convert.ToInt32(this.lblPageCur.Text)-1); dataGridBind(); } protected void Button2_Click(object sender, EventArgs e) { this.lblPageCur.Text = Convert.ToString(Convert.ToInt32(this.lblPageCur.Text) + 1); dataGridBind(); } protected void Button3_Click(object sender, EventArgs e) { this.lblPageCur.Text = "1"; dataGridBind(); } protected void Button4_Click(object sender, EventArgs e) { this.lblPageCur.Text = this.lblPageTotal.Text; dataGridBind(); } protected void Button5_Click(object sender, EventArgs e) { if (!IsPostBack) { this.lblPageCur.Text = this.DropDownList1.SelectedValue; dataGridBind(); } } protected void LinkButton1_Click(object sender, EventArgs e) { Response.Redirect("liuyan.aspx"); }}
