Chat box demo

How to create a chat by using .NET

Step 1:

>Create a New empty Website

>Right click on Application Add new Item

> Select File Global Application class and name it as global.asax

> Write Below code in global.asax

Global.asax

// Application_Start( write code in)

Application.Lock();

Application["tusers"]=0;                                           Note: tusers= Total Users

Application["ousers"]=0;                                                      ousers=Online users

Application["msgs"]="";

Application.Unlock();

// Session_Start(write code in)

int tusers,ousers;

Application.Lock();

tusers=(int)Application["tusers"]+1;              // Unboxing

ousers=(int)Application["ousers"]+1;

Application["tusers"]=tusers;

Application["ousers']=ousers;

Application.Unlock();

// Session_End(write code in)

int ousers;

Application.Lock();

ousers=(int)Application["ousers"]-1;

Application["ousers"]=ousers;

Application.Unlock();

Step 2:

> Add a webform 

>Name it as Default.aspx

Default.aspx [Design]

> Design like below diagram

> Use table (4 rows , 1 column)

(To see complete image click on it)

                                                          

// Page_Load (write code in)

Application.Lock();

lblTotalUsers.Text=Application["tusers"].Tostring();

lblOnlineUsers.Text=Application["ousers"].ToString();

lblMsg.Text=Application["msgs"].ToString();

Application.Unlock();

// Logout_buttonclick(write code in)

Session.Abandon();

// Send_buttonclick(write code in)

string uname,msg,msgs;

uname=txtName.Text;

if(uname.Lenght>0)

msg.string.Format("<font color =green> {0}:</font> {1}",uname,txtMsg.Text);

else

msg=string.Format("<font color =Red> Guest:</font> {0}",txtMsg.Text);

Application.Lock();

msgs=Application["msgs"].ToString() + "<br>" + msg;

Application["msgs"] = msgs;

Application.Unlock();

lblmsg.Text=msgs;

                                                                    ALL THE BEST