Cookies
It is small amount of info stored by web server on client machine.
Types of Cookies :
- Temperary Cookie (the info will be lost when user closes the browser or logout).
- Permanent Cookie(persistent cookie) : the info will be stored on client machine till the time specified).
For Example
protected void Button1_Click(object sender, EventArgs e)
{
///////////////////////// temporary cookie creation
HttpCookie cook = new HttpCookie("vilas");
DateTime dt = DateTime.Now;
cook.Values.Add("currentdatetime", dt.ToString());
cook.Values.Add("username", TextBox1.Text);
cook.Values.Add("password", TextBox2.Text);
Response.Cookies.Add(cook);
Label3.Text = "temp cookie created";
}
protected void Button2_Click(object sender, EventArgs e)
{
///////////////////////// permanent cookie creation
HttpCookie cook = new HttpCookie("conco");
DateTime dt = DateTime.Now;
cook.Values.Add("currentdatetime", dt.ToString());
cook.Values.Add("username", TextBox1.Text);
cook.Values.Add("password", TextBox2.Text);
///////////////////////// for permanant
cook.Expires = dt.AddMinutes(10);
// DateTime dt1=new DateTime(10,31,2014);
// cook.Expires = dt1;
Response.Cookies.Add(cook);
Label3.Text = "perm cookie created";
}
protected void Button3_Click(object sender, EventArgs e)
{
///////////////////////// reading cookie
HttpCookie cook = Request.Cookies["conco"];
if (cook != null)
{
string dat, user, pass;
dat = cook.Values["currentdatetime"].ToString();
user = cook.Values["username"].ToString();
pass = cook.Values["password"].ToString();
Label3.Text="date time of creation of cookie is " + d + "--"+"user name is " + u + "--"+"password is " + p + "--";
}
else
{
Label3.Text = "no cookie present";
}
}
