how to store and retrieve data from cookies

This example shows that how to store and retrieve data from cookies.

Code:

/////////////////////////////////////////////////////////////////////////
/// <b>Function: Page_Load</b>
///
/// \param	sender
///
/// \param	e
///
/// \return	private void 
///
/// \remarks	Initialize the page here
///
/////////////////////////////////////////////////////////////////////////
private void Page_Load(object sender, System.EventArgs e)
{
	// Put user code to initialize the page here
	if(!IsPostBack)
	{
		if(Request.Cookies["UserCook"] != null)
		{
			chkRemember.Checked = true;
			HttpCookie cook = Request.Cookies["UserCook"];
			txtUserName.Text = cook["UserName"].ToString();
			
		}
	}
}


/////////////////////////////////////////////////////////////////////////
/// <b>Function: btnSubmit_Click</b>
///
/// \param	sender
///
/// \param	e
///
/// \return	private void 
///
/// \remarks	Submit button handler
///
/////////////////////////////////////////////////////////////////////////
private void btnSubmit_Click(object sender, System.EventArgs e)
{
	try
	{
		if(chkRemember.Checked == true)
		{
			if(Request.Browser.Cookies == true)
			{
				HttpCookie loginCook = new HttpCookie("UserCook");
				loginCook["UserName"] = txtUserName.Text.Trim();
				loginCook.Expires = DateTime.MaxValue;
				Response.Cookies.Add(loginCook);
			}
			else
			{
				lblErr.Text = "Please enable your cookies in Internet
					option in Explorer.";
			}
		}
		if(txtUserName.Text.Trim() == "developer" &&
			txtPwd.Text.Trim() == "developer")
		{
			Session["UserId"] = txtUserName.Text.Trim();
			Response.Redirect("Querystring.aspx?Usertype=Web Developer");
		}
		else if(txtUserName.Text.Trim()=="admin" && txtPwd.Text.Trim()== "admin")
		{
			Session["UserId"] = txtUserName.Text.Trim();
			string str = Server.UrlEncode("Administrator+");
			
			Response.Redirect("Querystring.aspx?UserType="+str);
		}
		else
		{
			lblErr.Text = "Invalid user id and password.";
		}
	}
	catch(Exception ex)
	{
		Response.Write(ex.Message);
	}
}

 

Good basics

 

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