Code:
1) guestpost.aspx :- The Guestbook post page
＜%@ Import Namespace="System" %＞
＜%@ Page Language="C#" EnableSessionState="False" Debug="True" %＞
＜%@ Import Namespace="System.IO" %＞
＜%@ Assembly Name="System.Xml" %＞
＜%@ Import Namespace="System.Xml" %＞
＜%-- These are the imported assemblies and namespaces need to run the guest book --%＞
＜html＞
＜head＞
＜title＞Welcome to Saurabh's GuestBook.＜/title＞
＜script Language="C#" runat="server"＞
//This method is called when the submit button is clicked
public void Submit_Click(Object sender, EventArgs e)
{
//the path to the Xml file which will contain all the data
//modify this if you have any other file or directory mappings.
//modify this if you have been directed here from Step 2 of the ReadMe file.
string datafile = "db/guest.xml" ;
//put the posting code within a Try-Catch block
try
{
//proceed only if all the required feilds are filled-in
if(Page.IsValid&&Name.Text!=""&&Country.Text!=""&&Email.Text!=""){
errmess.Text="" ;
//make an instance of the class XmlDocument
XmlDocument xmldocument = new XmlDocument() ;
//load the xml file you will use as your database.
//Since we are working on a server we have to use 'Server.MapPath()'
//to map the path to the database file //Also Open a FileStream to the Database
//Keep "FileShare.ReadWrite" mode to enable sharing
FileStream fin ;
fin = new FileStream(Server.MapPath(datafile), FileMode.Open,
FileAccess.Read, FileShare.ReadWrite) ;
xmldocument.Load(new StreamReader(fin)) ;
fin.Close();
//make an instance of DocumentNavigator class which will help us to
//navigate in the loaded XML data file.
DocumentNavigator navigator = new DocumentNavigator(xmldocument) ;
//below code is very significant as it navigates through the XML document and
//stores the required values (ps: read this code carefully)
//first move to the xml documents elements
//(in my xml file this will be the 'Guests' Node)
navigator.MoveToDocumentElement() ;
//then insert First element (FirstChild) which will contain all the information
// of a single guest posting
navigator.Insert(TreePosition.FirstChild, XmlNodeType.Element, "Guest","","") ;
//Insert the Element of Name as the First node of 'Guest'
navigator.Insert(TreePosition.FirstChild, XmlNodeType.Element, "Name","","") ;
//This is important to specify what kind of Value will the Name element contain
navigator.Insert(TreePosition.FirstChild, XmlNodeType.Text,"Name","","") ;
//assign the Name element the Value from the .Text property of the TextBox
navigator.Value=Name.Text ;
//Go back to the Parent Node ie 'Guest'
navigator.MoveToParent() ;
//Insert another Element 'Country' After the FirstChild ie. after the 'Name' node.
navigator.Insert(TreePosition.After, XmlNodeType.Element,"Country","","") ;
navigator.Insert(TreePosition.FirstChild, XmlNodeType.Text,"Country","","") ;
navigator.Value=Country.Text ;
navigator.MoveToParent() ;
navigator.Insert(TreePosition.After,XmlNodeType.Element,"Email","","") ;
navigator.Insert(TreePosition.FirstChild, XmlNodeType.Text,"Email","","") ;
navigator.Value=Email.Text;
navigator.MoveToParent() ;
navigator.Insert(TreePosition.After,XmlNodeType.Element,"Comments","","") ;
navigator.Insert(TreePosition.FirstChild, XmlNodeType.Text,"comments","","") ;
navigator.Value=Comments.Value ;
navigator.MoveToParent() ;
navigator.Insert(TreePosition.After, XmlNodeType.Element,"DateTime","","") ;
navigator.Insert(TreePosition.FirstChild, XmlNodeType.Text,"DateTime","","") ;
//set the Date time stamp of the entry
DateTime now = DateTime.Now ;
navigator.Value=now.ToShortDateString()+" "+now.ToShortTimeString() ;
//Create a stream to save the file
FileStream fout ;
fout = new FileStream(Server.MapPath(datafile), FileMode.Open,
FileAccess.Write, FileShare.ReadWrite) ;
//after making the necessary changes we Save the changes to the Xml Document
xmldocument.Save(new StreamWriter(fout)) ;
//free up the XML file from the Document file so that other programs can use it
xmldocument=null ;
fout.Close();
//Build a custom query sending the data posted to another page for display
//since it is a query we have to encode it in UTF8 format
String QueryString="Name="
+System.Web.HttpUtility.UrlEncodeToString(Name.Text,System.Text.Encoding.UTF8);
QueryString+="&&Country="
+System.Web.HttpUtility.UrlEncodeToString(Country.Text,System.Text.Encoding.UTF8);
QueryString+="&&Email="
+System.Web.HttpUtility.UrlEncodeToString(Email.Text,System.Text.Encoding.UTF8);
QueryString+="&&Comments="
+System.Web.HttpUtility.UrlEncodeToString(Comments.Value,System.Text.Encoding.UTF8);
//go to the page viewpost.aspx and append the query string at its end.
Page.Navigate("viewPost.aspx?" + QueryString);
}
else
{
//if any of the Fields are kept empty show an error message
errmess.Text="Fill in all the required fields of the Guestbook." ;
}
}
catch (Exception edd)
{
//catch any other exception that occur
errmess.Text="Cannot write to XML file because "+edd.ToString() ;
}
}
＜/script＞
＜LINK href="mystyle.css" type=text/css rel=stylesheet＞
＜/head＞
＜body topmargin="0" leftmargin="0" rightmargin="0" marginwidth="0" marginheight="0"＞
＜%-- Include a header file 'header.inc' --%＞
＜!-- #Include File="header.inc" --＞
＜br＞
＜h3 align="center" class="newsbody"＞Guestbook Post Page.＜/h3＞
＜br＞
＜asp:label id="errmess" text="" style="color:#FF0000" runat="server" /＞
＜form runat="server"＞
＜table border="0" width="80%" align="Center"＞
＜tr ＞
＜td class="newsheading"＞＜b＞Sign-in My GuestBook＜/b＞＜/td＞
＜td class="newsheading"＞ ＜/td＞
＜/tr＞
＜tr class="newsbody" ＞
＜td＞Name :＜/td＞
＜td ＞＜asp:textbox text="" id="Name" runat="server" /＞
＜font color=#FF0000＞*＜/font＞＜/td＞
＜/tr＞
＜tr class="newsbody"＞
＜td＞Country :＜/td＞
＜td＞＜asp:textbox text="" id="Country" runat="server"/＞
＜font color=#FF0000＞*＜/font＞＜/td＞
＜/tr＞
＜tr class="newsbody"＞
＜td＞E-Mail :＜/td＞
＜td＞＜asp:textbox test="" id="Email" runat="server"/＞
＜font color=#FF0000＞*＜/font＞＜/td＞
＜/tr＞
＜tr class="newsbody"＞
＜td＞Comments :＜/td＞
＜td＞＜textarea id="Comments" cols="25" rows="4" runat="server" /＞＜/td＞
＜/tr＞
＜tr class="newsbody"＞
＜td colspan="2" ＞
＜asp:Button class="newsheading" Text="Submit" onClick="Submit_Click" runat="server"/＞
＜/td＞
＜/tr＞
＜/table＞
＜/form＞
＜br＞
＜h4 class="newsbody"＞＜a href="viewguestbook.aspx"＞Click here ＜/a＞ to view GuestBook.＜/h4＞
＜br＞
＜!-- #Include File="footer.inc" --＞
＜/body＞
/html＞
2) viewpost.aspx : The post conformation page.
＜%@ Import Namespace="System" %＞
＜%@ Page Language="C#" Debug="true" %＞
＜html＞
＜head＞
＜title＞Welcome to Saurabh's GuestBook.＜/title＞
＜script language="C#" runat="server" ＞
//execute this script when the page loads
void Page_Load(Object Src, EventArgs E)
{
//if the page is called from another page
if (!Page.IsPostBack) {
//get the different Parameters from the query string and store it
//to respective Labels
NameLabel.Text = Request.Params["Name"];
CountryLabel.Text= Request.Params["Country"] ;
EmailLabel.Text=Request.Params["Email"];
CommentsLabel.Text=Request.Params["Comments"] ;
}
if(Page.IsPostBack)
{
//else display an error
errmess.Text="This Page Cannot be called directly. " ;
}
}
＜/script＞
＜LINK href="mystyle.css" type=text/css rel=stylesheet＞
＜/head＞
＜body topmargin="0" leftmargin="0" rightmargin="0" marginwidth="0" marginheight="0"＞
＜!-- #Include File="header.inc" --＞
＜asp:label id="errmess" text="" style="color:#FF0000" runat="server" /＞
＜center＞
＜h2 class="newsbody"＞＜b＞Thank You , for posting in My GuestBook.＜/b＞＜/h2＞
＜table align=center width="60%" border="0" cellspacing="2" cellpadding="1" ＞
＜tr class="titheading"＞＜td colspan="2"＞The information You Posted!＜/td＞＜/tr＞
＜tr class="newsbody"＞
＜td＞Name :＜/td＞
＜td＞＜asp:label id="NameLabel" text="" runat="server" /＞＜/td＞
＜/tr＞
＜tr class="newsbody"＞
＜td＞Country :＜/td＞
＜td＞＜asp:label id="CountryLabel" text="" runat="server" /＞＜/td＞
＜/tr＞
＜tr class="newsbody"＞
＜td＞E-mail :＜/td＞
＜td＞＜asp:label id="EmailLabel" text="" runat="server"/＞＜/td＞
＜/tr＞
＜tr class="newsbody"＞
＜td＞Comments :＜/td＞
＜td＞＜asp:label id="CommentsLabel" text="" runat="server" /＞＜/td＞
＜/tr＞
＜/table＞
＜br＞
＜h4 class="newsbody"＞＜a href="viewguestbook.aspx"＞Click here ＜/a＞ to view GuestBook.＜/h4＞
＜br＞
＜/center＞
＜!-- #Include File="footer.inc" --＞
＜/body＞
＜/html＞
2) viewguestbook.aspx : The Guestbook viewing page.
＜%@ Import Namespace="System" %＞
＜%@ Import Namespace="System.IO" %＞
＜%@ Import Namespace="System.Data" %＞
＜%@ Assembly Name="System.Xml" %＞
＜%@ Import Namespace="System.Xml" %＞
＜%@ Page Language="C#" %＞
＜%-- Needed Assembiles --%＞
＜html＞
＜head＞
＜title＞Welcome to Saurabh's GuestBook.＜/title＞
＜script language="C#" runat=server＞
//run the script when the Page is Loaded
public void Page_Load(Object sender, EventArgs e)
{
//the path to the Xml file which will contain all the data
//modify this if you have any other file or directory mappings.
//modify this if you have been directed here from Step 2 of the ReadMe file.
string datafile = "db/guest.xml" ;
//try-Catch block to read from an XML file
try
{
//make an instance to the XMLDataDocument class
//this class can read from an xml file in and ordered format
XmlDataDocument datadoc = new XmlDataDocument();
//Open a FileStream to the Database
FileStream fin ;
fin = new FileStream(Server.MapPath(datafile),FileMode.Open,
FileAccess.Read,FileShare.ReadWrite) ;
// Infer the DataSet schema from the XML data and load the XML Data
datadoc.DataSet.ReadXml(new StreamReader(fin));
//Databind the first table in the Dataset to the Repeater
MyDataList.DataSource = datadoc.DataSet.Tables[0].DefaultView;
MyDataList.DataBind();
//free up the XML file to be used by other programs
datadoc=null;
}
catch (Exception edd)
{
//catch any other exceptions that occur
errmess.Text="Cannot read from XML file because "+edd.ToString() ;
}
}
＜/script＞
＜LINK href="mystyle.css" type=text/css rel=stylesheet＞
＜/head＞
＜body topmargin="0" leftmargin="0" marginwidth="0" marginheight="0" rightmargin="0"＞
＜!-- #Include File="header.inc" --＞
＜asp:label id="errmess" text="" style="color:#FF0000" runat="server" /＞
＜br＞
＜h3 align="center" class="newsbody"＞My Guestbook.＜/h3＞
＜ASP:Repeater id="MyDataList" runat="server"＞
＜template name="headertemplate"＞
＜table class="mainheads" width="100%" style="font: 8pt verdana"＞
＜tr style="background-color:#FF9966"＞
＜th＞
Name
＜/th＞
＜th＞
Country
＜/th＞
＜th＞
＜/th＞
＜th＞
Comments
＜/th＞
＜th＞
Date/Time
＜/th＞
＜/tr＞
＜/template＞
＜template name="itemtemplate"＞
＜tr style="background-color:#FFFFCC"＞
＜td＞
＜%# DataBinder.Eval(Container.DataItem, "Name") %＞
＜/td＞
＜td＞
＜%# DataBinder.Eval(Container.DataItem, "Country") %＞
＜/td＞
＜td＞
＜%# DataBinder.Eval(Container.DataItem, "Email") %＞
＜/td＞
＜td＞
＜%# DataBinder.Eval(Container.DataItem, "Comments") %＞
＜/td＞
＜td＞
＜%# DataBinder.Eval(Container.DataItem, "DateTime") %＞
＜/td＞
＜/tr＞
＜/template＞
＜template name="footertemplate"＞
＜/table＞
＜/template＞
＜/ASP:Repeater＞
＜!-- #Include File="footer.inc" --＞
＜/body＞
＜/html＞
Saurabh Nandu