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Overview Creating Login System using cookies.

Sign in Remember me Sign out

By: Adnan Amin (Lecturer/Programmer)

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Requirement First create new web site project using visual

studio.net or visual web developer. Then add two Web forms in web site.

Login.aspx Main.aspx

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Controls used Login.aspx

Button (ID) btnSignin (text) Sign in Label (ID) lblUsername (text) Username

Label (ID) lblPassword (text) Password Textbox (ID) txtUsername (text) txtUsername Textbox (ID) txtPassword (text) txtPassword Checkbox (ID) chkRemember (text) Remember me.

Main.aspx Label (ID) lblUser (text) Welcome User Button (ID) btnSignout (text) Sign out

By: Adnan Amin (Lecturer/Programmer)

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Design the WebForm Login.aspx page

Header location of Main.aspx page

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Code Behind the Sign in button

If chkRemember.Checked then Dim abc As HttpCookie = New HttpCookie("user") abc.Values("uid") = TextBox1.Text abc.Expires = Now.AddDays(1) Response.Cookies.Add(abc) Response.Redirect("main.aspx")

End If

By: Adnan Amin (Lecturer/Programmer)

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Code Behind the Sign out button

Response.Cookies("user").Expires = Now.AddDays(-1)OR

Response.Cookies("user").Values.Remove("uid") Response.Redirect(login.aspx")

By: Adnan Amin (Lecturer/Programmer)

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Code Behind the Main_Load Open the Main.aspx page Double click on Main.aspx page in design view. Type the following codes in Main_Load event; If Not IsPostBack Then 'Check if the browser support cookies If Request.Browser.Cookies Then 'Check if the cookies with name user exist on user's machine If Request.Cookies("user") IsNot Nothing Then Me.lblUser.Text = Request.Cookies("user")("uid")

End If End If End If

By: Adnan Amin (Lecturer/Programmer)

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Design Main.aspx page

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Code Behind Sign in button. If Button9.Text = "Sign in" Then Dim abc As HttpCookie = New HttpCookie("user") abc.Values("uid") = TextBox1.Text abc.Expires = Now.AddDays(1) Response.Cookies.Add(abc) Button9.Text = "Sign out" Response.Redirect("main.aspx")

ElseIf Button9.Text = "Sign out" Then If Not Response.Cookies("user") Is Nothing Then 'Response.Cookies("user").Expires = Now.AddDays(-1) Response.Cookies("user").Values.Remove("uid") Button9.Text = "Sign in" End If End If

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Code Bihind the Main_Load Event If Not IsPostBack Then 'Check if the browser support cookies If Request.Browser.Cookies Then

'Check if the cookies with name user exist on user's machine If Request.Cookies("user") IsNot Nothing Then 'Pass the user name and password to the VerifyLogin method Me.Label7.Text = Request.Cookies("user")("uid") If Request.Cookies("user")("uid") IsNot Nothing Then Button9.Text = "Sign out" End If End If End If End If

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Thank You!

By: Adnan Amin (Lecturer/Programmer)

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