技术资料 > .Net专区 > Asp.Net开发 : 用asp.net写的论坛程序--论坛主页

用asp.net写的论坛程序--论坛主页

March 25,2004

1) forum.aspx :- The main forum page </P><P><%@ Page Language="C#" Debug="true" %>
<%@ Assembly Name="System.Data" %>
<%@ Import Namespace="System.Data.ADO" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System" %>
<html><head>
<title>Welcome to My Forum!</title>
  <script language="C#" runat="server" >
  //execute this script when the page loads
  void Page_Load(Object Src, EventArgs E)
  {
   //Call the Method to DataBind the DataGrid
   Binding() ;
  }
  //This Method Connects to the Database, and DataBinds the Database to the DataGrid
  public void Binding()
  {
   //String to connect to the database, If your Database is in some other directory then change the path
   //To the Database below
   string strConn=@"Provider=Microsoft.Jet.OLEDB.4.0 ;Data Source="+Server.MapPath(".\db\board.mdb") ;
   //Make a Connection to the Database
   ADOConnection myConn = new ADOConnection(strConn) ;
   //String to select records from the Database. newpost Table
   //I have used "ORDER BY postid DESC" since I want to show the latest post on the top
   //If you remove this clause then the oldest message will be shown first
   string strCom = "SELECT postid ,subject ,name ,replies ,views ,date FROM newpost ORDER BY postid DESC" ;
   //Open the Connection, Always remember to Open the connection before doing anything else
   myConn.Open();
   DataSet myDataSet = new DataSet();
   //Create a ADODataSetCommand and a DataSet
   ADODataSetCommand myCommand =new ADODataSetCommand(strCom,myConn);
   //Fill the DataSet
   myCommand.FillDataSet(myDataSet,"newpost") ;
   //Connection is closed
   myConn.Close();
   //Set the DataView of the Table "newpost" contained in the DataSet for the DataGrid
   DataGrid1.DataSource = myDataSet.Tables["newpost"].DefaultView ;
   //DataBind the DataGrid
   DataGrid1.DataBind();
  }
  //This method is called when the DataGrid is Paged (i.e. when you change from Page 1 to Page 2 etc.. )
  public void DataGrid_Updt(Object sender, DataGridPageChangedEventArgs e)
  {
   //Call the Method to Databind
   Binding();
  }
  //This Method is called when the form is submitted to make a new Post
  public void Submit_Click(Object sender, EventArgs e)
  {
   //proceed only if all the required fields are filled-in
   if(Page.IsValid&&name.Text!=""&&subject.Text!=""&&email.Text!=""){
      //Get the Current Date and Time
      DateTime now = DateTime.Now ;
      errmess.Text="" ;
      //I am building a custom query which will be used to call the postmessage.aspx page.
      //Since it will be a query we have to encode the query into UTF8 format.
      //So I get all the fields from the form and encode them into UTF8 format
      string req = "name="+ System.Web.HttpUtility.UrlEncodeToString(name.Text, System.Text.Encoding.UTF8);
      req+="&&email="+ System.Web.HttpUtility.UrlEncodeToString(email.Text, System.Text.Encoding.UTF8);
      req+="&&subject="+ System.Web.HttpUtility.UrlEncodeToString(subject.Text, System.Text.Encoding.UTF8);
      //Get the HostAddress of the Author
req+="&&ip="+ System.Web.HttpUtility.UrlEncodeToString(Request.UserHostAddress.ToString(), System.Text.Encoding.UTF8);
      req+="&&date="+ System.Web.HttpUtility.UrlEncodeToString(now.ToString(), System.Text.Encoding.UTF8);
      req+="&&message="+ System.Web.HttpUtility.UrlEncodeToString(message.Text, System.Text.Encoding.UTF8);
      //A 'yes' is used below to tell the postmessage page that this is a new topic post
      req+="&&newpost="+ System.Web.HttpUtility.UrlEncodeToString("yes", System.Text.Encoding.UTF8);
      //call the postmessage.aspx page and append the query to it.
      Page.Navigate("postmessage.aspx?" + req);
   }
   else
   {
      errmess.Text="Fill in all the Required Fields before Posting!<br>" ;
      }
}
</script>
<LINK href="mystyle.css" type=text/css rel=stylesheet></head>
<body topmargin="0" leftmargin="0" rightmargin="0" marginwidth="0" marginheight="0">

<center>
<asp:label id="errmess" text="" style="COLOR:#ff0000" runat="server" />
<asp:Label class=fodark text="<font color=#00000 >Welcome to My Discussion Forum</font>" runat=server />
<br>
<br>
<form method="post" runat="server" ID=Form1>
<%-- The DataGrid settings. Its very interesting how much you can play with it --%>
<asp:DataGrid id=DataGrid1 runat="server" ForeColor="Black"
PagerStyle-Mode="NumericPages"
OnPageIndexChanged="DataGrid_Updt" PageSize="20" AllowPaging="True" width="80%" autogeneratecolumns="False">
<property name="PagerStyle">
<asp:DataGridPagerStyle BackColor="Coral" Mode="NumericPages">
</asp:DataGridPagerStyle>
</property></P><P><property name="AlternatingItemStyle">
<asp:TableItemStyle BorderColor="#FFC080" BackColor="#FF9966">
</asp:TableItemStyle>
</property></P><P><property name="FooterStyle">
<asp:TableItemStyle ForeColor="White" BackColor="DarkOrange">
</asp:TableItemStyle>
</property></P><P><property name="ItemStyle">
<asp:TableItemStyle BackColor="Moccasin">
</asp:TableItemStyle>
</property></P><P><property name="HeaderStyle">
<asp:TableItemStyle Font-Bold="True" ForeColor="White" BackColor="Coral">
</asp:TableItemStyle>
</property>
<%-- I am setting up the Individual columns myself using Templates --%>
<property name="Columns">
<%-- Manipulate the subject entry so that it contains a link to the reply page --%>
<asp:TemplateColumn HeaderText="Subject" itemstyle-width=50%>
<template name="ItemTemplate" >
<asp:Label runat="server"  Text='<%#"<a href=reply.aspx?postid="+DataBinder.Eval(Container, "DataItem.postid")+">"
      +DataBinder.Eval(Container, "DataItem.subject")+"</a>" %>' ID=Label2></asp:Label>
</template>
</asp:TemplateColumn></P><P><asp:TemplateColumn HeaderText="Author Name" itemstyle-width=20%>
<template name="ItemTemplate">
<asp:Label runat="server"  Text='<%# DataBinder.Eval(Container, "DataItem.name") %>' ID=Label3></asp:Label>
</template>
</asp:TemplateColumn></P><P>
<asp:TemplateColumn HeaderText="Replies" itemstyle-width=10%>
<template name="ItemTemplate">
<asp:Label runat="server" width=10% Text='<%# DataBinder.Eval(Container, "DataItem.replies") %>' ID=Label4>
</asp:Label>
</template>
</asp:TemplateColumn></P><P><asp:TemplateColumn HeaderText="Views" itemstyle-width=10%>
<template name="ItemTemplate">
<asp:Label runat="server" width=10% Text='<%# DataBinder.Eval(Container, "DataItem.views") %>' ID=Label5>
</asp:Label>
</template>
</asp:TemplateColumn></P><P><asp:TemplateColumn HeaderText="Date of Post" itemstyle-width=10%>
<template name="ItemTemplate">
<asp:Label runat="server" width=10% Text='
<%# DataBinder.Eval(Container, "DataItem.date").ToString().ToDateTime().ToShortDateString() %>' ID=Label6>
</asp:Label></P><P></template>
</asp:TemplateColumn>
</property>
</asp:DataGrid>
<br>
<br>
<asp:Label class=fodark text="<font color=#00000 >Post New Topic</font>" runat=server />
<br>
<table border="0"  width="80%" align="center">
<tr >
<td class="fohead" colspan=2><b>Post New Topic</b></td>
</tr>
<tr class="folight" >
<td>Name :</td>
<td ><asp:textbox text="" id="name" runat="server" /> <font color=#ff0000>*</font></td>
</tr>
<tr class="folight">
<td>E-Mail :</td>
<td><asp:textbox text="" id="email" runat="server"/> <font color=#ff0000>*</font></td>
</tr>
<tr class="folight">
<td> Subject:</td>
<td><asp:textbox test="" id="subject" width=200 runat="server"/> <font color=#ff0000>*</font>
</td></tr>
<tr class="folight">
<td>Message :</td>
<td>
<asp:TextBox id=message runat="server"
Columns="30" Rows="15" TextMode="MultiLine"></asp:TextBox></td>
</tr>
<tr class=folight>
<td colspan=2>
<asp:Button class=fodark id=write onClick=Submit_Click runat="server" Text="Submit"></asp:Button></td></tr>
</table>
</form>
</center>

</body></html>