Create simple guest book application using ASP.Net and C#.Net
In this article i am going to describes How to create simple guest book application using ASP.Net and C#.Net? If you want to create a simple guest book for your website then it is the right application for you. This is very simple application which use c#.net's IO namespace.
Sometimes we need to put guest book in our website. Suppose we don't have any database to save the data. At that time, what can we do to save the data?
We can use simple text file to save the data.
So i am going to show the code which will do the same.
check below code :
in page.ASPX page :
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>GuestBook</title>
<style >
hr
{
height:1px;
background:#446791;
}
.time
{
font-size :11px;
font-family :Arial;
}
.name
{
font-family :Arial ;
font-size :11px;
font-weight :bold;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:Timer ID="Timer1" runat="server" Interval="2000" ontick="Timer1_Tick">
</asp:Timer>
<asp:UpdatePanel ID="UpdatePanel1" UpdateMode ="Conditional" runat="server">
<Triggers >
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
<ContentTemplate >
<asp:Label ID="Label1" runat="server" Text=""></asp:Label><br />
<div style ="width :815px; height :500px; overflow :auto ">
<asp:Label ID="lblMsg" style="padding:5px" runat="server" Text="" Width ="800px" BorderColor ="Teal" BorderWidth ="1px" BorderStyle ="Solid" BackColor ="AliceBlue" ></asp:Label>
</div>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdatePanel ID="UpdatePanel2" UpdateMode ="Conditional" runat ="server" >
<Triggers >
<asp:PostBackTrigger ControlID ="btnSend" />
</Triggers>
<ContentTemplate >
<br /><br />
<asp:TextBox ID="txtName" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate ="txtName" ErrorMessage="Enter Your Name"></asp:RequiredFieldValidator>
<br />
<asp:TextBox ID="txtMsg" TextMode ="MultiLine" Width="500px" Height="60px" runat="server" ></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate ="txtMsg" ErrorMessage="Enter Message"></asp:RequiredFieldValidator>
<asp:Button ID="btnSend" runat="server" Text="Submit" Font-Bold ="true" onclick="btnSend_Click" />
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>
Now put below code in asp.cs file :
page.aspx.cs
using System.IO;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
getMsg();
}
protected void Timer1_Tick(object sender, EventArgs e)
{
Random rnd = new Random();
int i = rnd.Next(14);
getMsg();
Label1.Text = "Guest Book Refreshed At : " + DateTime.Now.ToString();
}
protected void btnSend_Click(object sender, EventArgs e)
{
WriteMsg("<span class='name'>Posted By :<i> " + txtName.Text + "</i></span> <span class='time'> Posted At : " + DateTime.Now.ToString() + "</span><br>" + txtMsg.Text + "<br><hr>");
txtName.Text = "";
txtMsg.Text = "";
}
void getMsg()
{
StreamReader SR = File.OpenText(Server.MapPath("guestbook.txt"));
string msg = "";
lblMsg.Text = "";
while ((msg = SR.ReadLine()) != null)
{
lblMsg.Text += msg + "";
}
SR.Close();
}
void WriteMsg(string msg)
{
StreamWriter TxtWtr = new StreamWriter(Server.MapPath("guestbook.txt"), true);
TxtWtr.WriteLine(Convert.ToString(msg));
TxtWtr.Close();
}
}
Thank You.
Reference: http://dotnetsquare.com/codesnippets/7-create-one-simple-guest-book-in-ASPNet-and-C-Net
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