Clearing cookies

[Water Cooler v2]

I am practicing Cookies in .NET. Its working fine but when I want to
clear my cookies, the statement,

Response.Cookies.Clear

does not work. What gives?

Here's what I do:
(1) Login page

There's a "Remember me on this computer checkbox". When the user
presses the login button, I do this:
Sub btnLogin_Click(sender As Object, e As EventArgs)

if chkRemember.Checked = True Then
Dim ckUserName As HttpCookie = new HttpCookie("UserName")
ckUserName.value = Trim(txtUserName.Text)
ckUserName.Expires = System.DateTime.Now.AddYears(4)
Response.Cookies.Add(ckUserName)
ckUserName = Nothing

Dim ckPassword As HttpCookie = new HttpCookie("Password")
ckPassword.value = Trim(txtPassword.Text)
ckPassword.Expires = System.DateTime.Now.AddYears(4)
Response.Cookies.Add(ckPassword)
ckPassword = Nothing
End If

Response.Redirect("AnotherPage.aspx")
End Sub

Sub Page_Load(sender As Object, e As EventArgs)
if Not (Request.Cookies("UserName") Is Nothing And _
Request.Cookies("Password") Is Nothing) Then
Response.Redirect("AnotherPage.aspx")
End If
End Sub
(2) AnotherPage.aspx

Sub Page_Load(sender As Object, e As EventArgs)
If Not (Request.Cookies("UserName") Is Nothing And _
Request.Cookies("Password") Is Nothing) Then
Dim StrUserName As String =
Request.Cookies("UserName").value.ToString
Response.Write("Welcome, " & StrUserName & "!")
Response.Write("<br/><p>If you are not " & StrUserName & ",
then click <a href='ClearCookies.aspx'>here</a>.</p>")
Else
Response.Write("You are a cookieless bastard.")
End If
End Sub
(3) ClearCookies.aspx

Sub Page_Load(sender As Object, e As EventArgs)
Response.Cookies.Clear
Response.Redirect("index.aspx")
End Sub

[m.posseth]

Hello ,,
Deleting a cookie - physically removing it from the user's hard disk - is a
variation on modifying it. You cannot directly remove a cookie because the
cookie is on the user's computer. However, you can get the browser to delete
the cookie for you. The technique is to modify the cookie as described above
(that is, create a new cookie with the same name) but to set the cookie's
expiration to a date earlier than today. When the browser checks the
cookie's expiration, the browser will discard the now-outdated cookie.

Deleting any one cookie is therefore the same technique as creating that
cookie, except that you use a date earlier than today. The following example
is slightly more interesting than deleting a single cookie - it shows one
way to delete all the cookies for the current domain:

Dim i As Integer
Dim cookieName As String
Dim limit As Integer = Request.Cookies.Count - 1
For i = 0 To limit
aCookie = Request.Cookies(i)
aCookie.Expires = DateTime.Now.AddDays(-1)
Response.Cookies.Add(aCookie)
Nextregards Michel Posseth "Water Cooler v2" <wt*****@yahoo.com> wrote in
message news:11*********************@z14g2000cwz.googlegro ups.com...

I am practicing Cookies in .NET. Its working fine but when I want to
clear my cookies, the statement,

Response.Cookies.Clear

does not work. What gives?

Here's what I do:
(1) Login page

There's a "Remember me on this computer checkbox". When the user
presses the login button, I do this:
Sub btnLogin_Click(sender As Object, e As EventArgs)

if chkRemember.Checked = True Then
Dim ckUserName As HttpCookie = new HttpCookie("UserName")
ckUserName.value = Trim(txtUserName.Text)
ckUserName.Expires = System.DateTime.Now.AddYears(4)
Response.Cookies.Add(ckUserName)
ckUserName = Nothing

Dim ckPassword As HttpCookie = new HttpCookie("Password")
ckPassword.value = Trim(txtPassword.Text)
ckPassword.Expires = System.DateTime.Now.AddYears(4)
Response.Cookies.Add(ckPassword)
ckPassword = Nothing
End If

Response.Redirect("AnotherPage.aspx")
End Sub

Sub Page_Load(sender As Object, e As EventArgs)
if Not (Request.Cookies("UserName") Is Nothing And _
Request.Cookies("Password") Is Nothing) Then
Response.Redirect("AnotherPage.aspx")
End If
End Sub
(2) AnotherPage.aspx

Sub Page_Load(sender As Object, e As EventArgs)
If Not (Request.Cookies("UserName") Is Nothing And _
Request.Cookies("Password") Is Nothing) Then
Dim StrUserName As String =
Request.Cookies("UserName").value.ToString
Response.Write("Welcome, " & StrUserName & "!")
Response.Write("<br/><p>If you are not " & StrUserName & ",
then click <a href='ClearCookies.aspx'>here</a>.</p>")
Else
Response.Write("You are a cookieless bastard.")
End If
End Sub
(3) ClearCookies.aspx

Sub Page_Load(sender As Object, e As EventArgs)
Response.Cookies.Clear
Response.Redirect("index.aspx")
End Sub

[m.posseth]

Hello ,,
Deleting a cookie - physically removing it from the user's hard disk - is a
variation on modifying it. You cannot directly remove a cookie because the
cookie is on the user's computer. However, you can get the browser to delete
the cookie for you. The technique is to modify the cookie as described above
(that is, create a new cookie with the same name) but to set the cookie's
expiration to a date earlier than today. When the browser checks the
cookie's expiration, the browser will discard the now-outdated cookie.

Deleting any one cookie is therefore the same technique as creating that
cookie, except that you use a date earlier than today. The following example
is slightly more interesting than deleting a single cookie - it shows one
way to delete all the cookies for the current domain:

Dim i As Integer
Dim cookieName As String
Dim limit As Integer = Request.Cookies.Count - 1
For i = 0 To limit
aCookie = Request.Cookies(i)
aCookie.Expires = DateTime.Now.AddDays(-1)
Response.Cookies.Add(aCookie)
Nextregards Michel Posseth "Water Cooler v2" <wt*****@yahoo.com> wrote in
message news:11*********************@z14g2000cwz.googlegro ups.com...

I am practicing Cookies in .NET. Its working fine but when I want to
clear my cookies, the statement,

Response.Cookies.Clear

does not work. What gives?

Here's what I do:
(1) Login page

There's a "Remember me on this computer checkbox". When the user
presses the login button, I do this:
Sub btnLogin_Click(sender As Object, e As EventArgs)

if chkRemember.Checked = True Then
Dim ckUserName As HttpCookie = new HttpCookie("UserName")
ckUserName.value = Trim(txtUserName.Text)
ckUserName.Expires = System.DateTime.Now.AddYears(4)
Response.Cookies.Add(ckUserName)
ckUserName = Nothing

Dim ckPassword As HttpCookie = new HttpCookie("Password")
ckPassword.value = Trim(txtPassword.Text)
ckPassword.Expires = System.DateTime.Now.AddYears(4)
Response.Cookies.Add(ckPassword)
ckPassword = Nothing
End If

Response.Redirect("AnotherPage.aspx")
End Sub

Sub Page_Load(sender As Object, e As EventArgs)
if Not (Request.Cookies("UserName") Is Nothing And _
Request.Cookies("Password") Is Nothing) Then
Response.Redirect("AnotherPage.aspx")
End If
End Sub
(2) AnotherPage.aspx

Sub Page_Load(sender As Object, e As EventArgs)
If Not (Request.Cookies("UserName") Is Nothing And _
Request.Cookies("Password") Is Nothing) Then
Dim StrUserName As String =
Request.Cookies("UserName").value.ToString
Response.Write("Welcome, " & StrUserName & "!")
Response.Write("<br/><p>If you are not " & StrUserName & ",
then click <a href='ClearCookies.aspx'>here</a>.</p>")
Else
Response.Write("You are a cookieless bastard.")
End If
End Sub
(3) ClearCookies.aspx

Sub Page_Load(sender As Object, e As EventArgs)
Response.Cookies.Clear
Response.Redirect("index.aspx")
End Sub

[m.posseth]

see this for more cookie info :

http://msdn.microsoft.com/library/de...cookies101.asp

regards

Michel Posseth

"m.posseth" <mi*****@nohausystems.nl> wrote in message
news:%2****************@TK2MSFTNGP10.phx.gbl...

Hello ,,
Deleting a cookie - physically removing it from the user's hard disk - is
a variation on modifying it. You cannot directly remove a cookie because
the cookie is on the user's computer. However, you can get the browser to
delete the cookie for you. The technique is to modify the cookie as
described above (that is, create a new cookie with the same name) but to
set the cookie's expiration to a date earlier than today. When the browser
checks the cookie's expiration, the browser will discard the now-outdated
cookie.

Deleting any one cookie is therefore the same technique as creating that
cookie, except that you use a date earlier than today. The following
example is slightly more interesting than deleting a single cookie - it
shows one way to delete all the cookies for the current domain:

Dim i As Integer
Dim cookieName As String
Dim limit As Integer = Request.Cookies.Count - 1
For i = 0 To limit
aCookie = Request.Cookies(i)
aCookie.Expires = DateTime.Now.AddDays(-1)
Response.Cookies.Add(aCookie)
Nextregards Michel Posseth "Water Cooler v2" <wt*****@yahoo.com> wrote in
message news:11*********************@z14g2000cwz.googlegro ups.com...

I am practicing Cookies in .NET. Its working fine but when I want to
clear my cookies, the statement,

Response.Cookies.Clear

does not work. What gives?

Here's what I do:
(1) Login page

There's a "Remember me on this computer checkbox". When the user
presses the login button, I do this:
Sub btnLogin_Click(sender As Object, e As EventArgs)

if chkRemember.Checked = True Then
Dim ckUserName As HttpCookie = new HttpCookie("UserName")
ckUserName.value = Trim(txtUserName.Text)
ckUserName.Expires = System.DateTime.Now.AddYears(4)
Response.Cookies.Add(ckUserName)
ckUserName = Nothing

Dim ckPassword As HttpCookie = new HttpCookie("Password")
ckPassword.value = Trim(txtPassword.Text)
ckPassword.Expires = System.DateTime.Now.AddYears(4)
Response.Cookies.Add(ckPassword)
ckPassword = Nothing
End If

Response.Redirect("AnotherPage.aspx")
End Sub

Sub Page_Load(sender As Object, e As EventArgs)
if Not (Request.Cookies("UserName") Is Nothing And _
Request.Cookies("Password") Is Nothing) Then
Response.Redirect("AnotherPage.aspx")
End If
End Sub
(2) AnotherPage.aspx

Sub Page_Load(sender As Object, e As EventArgs)
If Not (Request.Cookies("UserName") Is Nothing And _
Request.Cookies("Password") Is Nothing) Then
Dim StrUserName As String =
Request.Cookies("UserName").value.ToString
Response.Write("Welcome, " & StrUserName & "!")
Response.Write("<br/><p>If you are not " & StrUserName & ",
then click <a href='ClearCookies.aspx'>here</a>.</p>")
Else
Response.Write("You are a cookieless bastard.")
End If
End Sub
(3) ClearCookies.aspx

Sub Page_Load(sender As Object, e As EventArgs)
Response.Cookies.Clear
Response.Redirect("index.aspx")
End Sub

[m.posseth]

see this for more cookie info :

http://msdn.microsoft.com/library/de...cookies101.asp

regards

Michel Posseth

"m.posseth" <mi*****@nohausystems.nl> wrote in message
news:%2****************@TK2MSFTNGP10.phx.gbl...

Hello ,,
Deleting a cookie - physically removing it from the user's hard disk - is
a variation on modifying it. You cannot directly remove a cookie because
the cookie is on the user's computer. However, you can get the browser to
delete the cookie for you. The technique is to modify the cookie as
described above (that is, create a new cookie with the same name) but to
set the cookie's expiration to a date earlier than today. When the browser
checks the cookie's expiration, the browser will discard the now-outdated
cookie.

Deleting any one cookie is therefore the same technique as creating that
cookie, except that you use a date earlier than today. The following
example is slightly more interesting than deleting a single cookie - it
shows one way to delete all the cookies for the current domain:

Dim i As Integer
Dim cookieName As String
Dim limit As Integer = Request.Cookies.Count - 1
For i = 0 To limit
aCookie = Request.Cookies(i)
aCookie.Expires = DateTime.Now.AddDays(-1)
Response.Cookies.Add(aCookie)
Nextregards Michel Posseth "Water Cooler v2" <wt*****@yahoo.com> wrote in
message news:11*********************@z14g2000cwz.googlegro ups.com...

I am practicing Cookies in .NET. Its working fine but when I want to
clear my cookies, the statement,

Response.Cookies.Clear

does not work. What gives?

Here's what I do:
(1) Login page

There's a "Remember me on this computer checkbox". When the user
presses the login button, I do this:
Sub btnLogin_Click(sender As Object, e As EventArgs)

if chkRemember.Checked = True Then
Dim ckUserName As HttpCookie = new HttpCookie("UserName")
ckUserName.value = Trim(txtUserName.Text)
ckUserName.Expires = System.DateTime.Now.AddYears(4)
Response.Cookies.Add(ckUserName)
ckUserName = Nothing

Dim ckPassword As HttpCookie = new HttpCookie("Password")
ckPassword.value = Trim(txtPassword.Text)
ckPassword.Expires = System.DateTime.Now.AddYears(4)
Response.Cookies.Add(ckPassword)
ckPassword = Nothing
End If

Response.Redirect("AnotherPage.aspx")
End Sub

Sub Page_Load(sender As Object, e As EventArgs)
if Not (Request.Cookies("UserName") Is Nothing And _
Request.Cookies("Password") Is Nothing) Then
Response.Redirect("AnotherPage.aspx")
End If
End Sub
(2) AnotherPage.aspx

Sub Page_Load(sender As Object, e As EventArgs)
If Not (Request.Cookies("UserName") Is Nothing And _
Request.Cookies("Password") Is Nothing) Then
Dim StrUserName As String =
Request.Cookies("UserName").value.ToString
Response.Write("Welcome, " & StrUserName & "!")
Response.Write("<br/><p>If you are not " & StrUserName & ",
then click <a href='ClearCookies.aspx'>here</a>.</p>")
Else
Response.Write("You are a cookieless bastard.")
End If
End Sub
(3) ClearCookies.aspx

Sub Page_Load(sender As Object, e As EventArgs)
Response.Cookies.Clear
Response.Redirect("index.aspx")
End Sub