Re: thumbnail picture for shop catalouge - ASP.NET Discussion Boards

Re: ASP.NET - C# passing a variable to the page with postback

Phivos Stylianides2-Apr-08 18:59

Phivos Stylianides

2-Apr-08 18:59

Thank's a lot for your post! Works!

proxy file not created

mpavas2-Apr-08 11:56

mpavas

2-Apr-08 11:56

Hello,

When I try to add a web reference in Visual studio 2005.

Below operation do not happen:
A WSE-enabled proxy class is added to the project

I just have two files in the Webreference folder:
wsdl and disco map.

Regards
Pavas

Regards,
Pavas

Clearing javascript cache in IE7

Meg W2-Apr-08 9:57

Meg W

2-Apr-08 9:57

Is there a special trick to clearing a javascript cache in IE7?

I have tried deleting all files through IE, deleting the temporary asp.net files, rebooting the machine - it still runs the old code.

If I call the page from another machine running IE6, it runs the new code.

Googling shows up some pretty weird stuff that has not helped...
TIA!!!

Re: Clearing javascript cache in IE7

Mitch F.2-Apr-08 20:11

Mitch F.

2-Apr-08 20:11

Have you tried holding CTRL+SHIFT on your keyboard while pressing the refresh button at the top?

I hope this helps.

Re: Clearing javascript cache in IE7

gspiteri3-Apr-08 11:31

gspiteri

3-Apr-08 11:31

Ok try selecting tools --> internet options --> settings (under browsing history) --> select the option every time you visit --> set disk size to 8 also you can then click on the advanced tab under security check the box Empty temporary internet files folder every time browser is closed

A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty I am a Optimist

Re: Clearing javascript cache in IE7

Meg W7-Apr-08 8:03

Meg W

7-Apr-08 8:03

Thanks for both suggestions - these both work fine for inline javascript, but still does not refresh the external .js file.

thumbnail picture for shop catalouge [modified]

Saba022-Apr-08 9:45

Saba02

2-Apr-08 9:45

Hello all,

i wrote this code for my catalogue pictures for my shop site,i want become thumbnail my pictures:
Eval("picure_url", "thumb_{0}")
but my pictures become loss when i add Thumb_ to my code

what do i do now?

thank you,
Hoda

modified on Wednesday, April 2, 2008 3:59 PM

Re: thumbnail picture for shop catalouge

Mark J. Miller2-Apr-08 10:01

Mark J. Miller

2-Apr-08 10:01

The simple way to do this is to set the height and width properties of the IMG element. However, the images will still be the same number of bytes. So if you need to resize the images physically you'll have to write a routine to either create thumbnail copies of each of your images and store them along with the original images or to dynamically resize them before displaying them. If you want to do that just search google: http://www.google.com/search?q=asp.net+image+thumbnail&rls=com.microsoft:en-US&ie=UTF-8&oe=UTF-8&startIndex=&startPage=1[^]

Mark's blog: developMENTALmadness.blogspot.com

Re: thumbnail picture for shop catalouge

Saba022-Apr-08 10:35

Saba02

2-Apr-08 10:35

Thank you very much for your response. Rose | [Rose]

RequestSoapContext not found in proxy

mpavas2-Apr-08 7:14

mpavas

2-Apr-08 7:14

Hello,

I am trying to attach a signature with the proxy and trying to do some operation like below:

wse.RequestSoapContext.Security.Tokens.Add (new X509SecurityToken(cert));
X509SecurityToken crtTkn = new X509SecurityToken(cert);

http://www.eggheadcafe.com/articles/20021231.asp

I am not able to see a "RequestSoapContext" under my proxy of webservice...? Could some one please suggest. What I might be missing. I have installed WSE 2.0

Regards,
Pavas

How do you Authenticate a User saved on SQL Server 2005?? Please Help.

Etienne2-Apr-08 6:34

Etienne

2-Apr-08 6:34

Hi
Can somebody please help me out. I created a Site that works but the code is directed to an Access Database.
I swopped to SQL Server 2005 and need to alter my code to connect and Select the Username and Password from
SQL Server 2005.
What changes do i need to make?
See Code Below please.

Imports System.Collections.Generic

Partial Class MasterPage
Inherits System.Web.UI.MasterPage

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

dlgLogin.Focus()

'Sets connectionstring and checks if user is logged in...................................
DBFunctions.setConnectionString(AccessDataSource1.ConnectionString)

If Not IsPostBack Then

'Page counter code...................................................................
If Application("PageCounter") Is Nothing Then
Application("PageCounter") = 1

Else

Application("PageCounter") += 1

End If

lblCounter.Text = Application("PageCounter")

'Connection........................................................................
If Not Session("Email") Is Nothing Then

LoggedIn()

Else

lblName.Visible = False

End If

End If

End Sub

Public Sub LoggedIn()

lblName.Visible = True
linkEdit.Enabled = True
lbtnLogout.Enabled = True
linkEdit.Visible = True
lbtnLogout.Visible = True

'Rater check for Username...............................................................
Try

Dim checkList As List(Of List(Of String)) = DBFunctions.queryRows("SELECT Username FROM Rater WHERE Email = '" + Session("Email") + "'")
lblName.Text = "Hello, " + checkList(0)(0)

lblName.ForeColor = Drawing.Color.DarkGreen

Catch ex As Exception

End Try

'Company check for Company Name................................................................
Try

Dim checkList2 As List(Of List(Of String)) = DBFunctions.queryRows("SELECT Name FROM Company WHERE Email = '" + Session("Email") + "'")
lblName.Text = "Hello, " + checkList2(0)(0)

lblName.ForeColor = Drawing.Color.Black

Catch ex As Exception

End Try

dlgLogin.Visible = False
linkRater.Visible = False
linkComp.Visible = False
linkPassword.Visible = False

End Sub

'boolean, returns true if login successful, false if not
Private Function authenticate(ByVal uname As String, ByVal password As String) As Boolean

'Rater check for email and password................................................................................
Try

Dim checkList As List(Of List(Of String)) = DBFunctions.queryRows("SELECT COUNT(Email) FROM Rater WHERE Email = '" + uname + "' and Password = '" + password + "'")

If checkList(0)(0) = "1" Then

Return True

End If

Catch ex As Exception

End Try

'Company check for email and password.............................................................................
Try

Dim checkList2 As List(Of List(Of String)) = DBFunctions.queryRows("SELECT COUNT(Email) FROM Company WHERE Email = '" + uname + "' and Password = '" + password + "'")

If checkList2(0)(0) = "1" Then

Return True

End If

Catch ex As Exception

End Try

Return False

End Function

Protected Sub dlgLogin_Authenticate(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.AuthenticateEventArgs) Handles dlgLogin.Authenticate

e.Authenticated = authenticate(dlgLogin.UserName, dlgLogin.Password)

End Sub

Protected Sub lbtnLogout_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles lbtnLogout.Click

dlgLogin.LoginButtonText = "Log In"
lblName.Visible = False
lbtnLogout.Enabled = False
lblName.Text = "Hello, "

Session.Clear()
Session.Abandon()
Session.RemoveAll()
dlgLogin.Enabled = True
Response.Redirect("Default.aspx")

End Sub

Protected Sub dlgLogin_LoggedIn(ByVal sender As Object, ByVal e As System.EventArgs) Handles dlgLogin.LoggedIn

Session("Email") = dlgLogin.UserName
LoggedIn()

End Sub

'For setting Label from other forms
Public Property Header() As String

Get
Return lblName.Text
End Get

Set(ByVal value As String)
lblName.Text = value
End Set

End Property

Protected Sub linkEdit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles linkEdit.Click

If lblName.ForeColor = Drawing.Color.Black Then

Response.Redirect("CompanyRegister.aspx")
Else

Response.Redirect("RaterRegister.aspx")

End If

End Sub
End Class

Re: How do you Authenticate a User saved on SQL Server 2005?? Please Help.

Mark J. Miller2-Apr-08 10:34

Mark J. Miller

2-Apr-08 10:34

Looks like you've encapsulated your database logic well enough that you should only need to update your queryRows method and your setConnectionString method. There isn't any difference in your code that you've posted. Lookup SqlConnection and SqlCommand for a good start on how to rewrite your methods.

Etienne wrote:
DBFunctions.queryRows("SELECT COUNT(Email) FROM Company WHERE Email = '" + uname + "' and Password = '" + password + "'")

As an aside, this is really bad practice for any application regardless of wither it's Access or SQL Server.

Instead you should do the following:

<br />
"SELECT COUNT(Email) FROM Company WHERE Email = @email and Password = @password"<br />

If you are using SQL Server pass this to the SqlCommand object. If you're using Access use OleDbCommand. Then regardless of the command object set the value of @email and @password using Parameters collection of the command object you create. You open yourself up to SQL Injection attacks otherwise.

Also, when you're updating data you're open to cross-site scripting attacks (XSS) unless you sanitize the data you get from the user using either Server.UrlEncode or Server.HtmlEncode. like this:

<br />
Dim email As String = Server.HtmlEncode(Request.Form("email"))<br />
<br />
' now you can pass your variable "email" to your SQL command<br />
<br />
<br />

I didn't see any examples of how you're updating data in your code above, but seeing your queries makes me think you aren't sanitizing your inputs either.

Sorry if the code samples don't compile, I haven't used VB in at least 6 years and I've never really used VB.NET.

Mark's blog: developMENTALmadness.blogspot.com

FormsAuthentication and Session timeout problem.

ESTAN2-Apr-08 6:28

ESTAN

2-Apr-08 6:28

Hi, I kind figure out the problem why the FormsAuthentication cookie can't be set, because just after the authentication it brings me back to the same page with the message that my session has been expired.

Lets see my webconfig.

<system.web>
    <authentication mode="Forms">
      <forms path="BackOffice" loginurl="BackOffice/Default.aspx?state=Timeout" protection="All" timeout="1">
      </forms>
    </authentication>
    <authorization>
      <deny users="?" />
    </authorization>
  </system.web>

The state=Timeout is caught to show an alert saying that the session has been timed out

The code that i use just after a successful authentication:

'FormsAuthentication.SetAuthCookie(tbxEmail.Text.Trim, False)
FormsAuthentication.RedirectFromLoginPage(tbxEmail.Text.Trim, True)
Response.Redirect("Home.aspx")

After a successfull authentication I don't get directed to the Home.aspx page.

When i set the following in the webconfig:
<forms path="BackOffice" loginUrl="BackOffice/Default.aspx?state=Timeout" protection="All" timeout="1" cookieless="UseUri">

but than my string changes to something like:
http://localhost:4190/TEST/(F(DkeaiAh5OWpUmiVajjisadVvodQMLp1lpg4yu8pQK_PlxqApl5udnh7iAx1Yi8KhNbLIx6pQkytYVuhnwCj7GmfkbmpD-2IxXSxyilQM5HDrQ9-byppwLdbd_uBxEeSNdo5UNcPd9nxQxW0ZU3o3Sw2))/BackOffice/Home.aspx

What I am doing wrong? How i can use normal cookies zo i don't need to have the UseUri flag?

Thanks

Re: FormsAuthentication and Session timeout problem.

Mark J. Miller2-Apr-08 10:50

Mark J. Miller

2-Apr-08 10:50

ESTAN wrote:
FormsAuthentication.RedirectFromLoginPage(tbxEmail.Text.Trim, True)
Response.Redirect("Home.aspx")

Your call to Response.Redirect doesn't get called because you're calling RedirectFromLoginPage before it. Do something like this:

<br />
<forms .... other attributes .... defaultUrl="~/BackOffice/Home.aspx" cookieless="UseCookies" /><br />

And your code can just be:

<br />
FormsAuthentication.RedirectFromLoginPage(....)<br />

You don't need to do anything special to use cookies. Calling RedirectFromLoginPage will set the user's cookie and the FormsAuthentication module will take care of managing the session ticket in the cookie.

And if you're session is still timing out, set your timeout to something more than 1 minute. 30 minutes is the default. 1 minute will never work in a real application, it would only be valid for testing what happens when the session times out. Here's the documentation for the <forms> element: http://msdn2.microsoft.com/en-us/library/1d3t3c61.aspx[^]

Mark's blog: developMENTALmadness.blogspot.com

Re: FormsAuthentication and Session timeout problem.

ESTAN3-Apr-08 22:49

ESTAN

3-Apr-08 22:49

Well i tried it, I've set the timeout to 55 minutes, added the defaultUrl and the cookieless attribute.

I changed all my code to that single line FormsAuthentication.RedirectFromLoginPage(email, false)

Well i can't seem to get it work, it calls immediately the login page again.

http://localhost:4190/TEST/BackOffice/Default.aspx?state=Timeout&ReturnUrl=%2fTEST%2fBackOffice%2fHome.aspx

I don't get it. Any idea why this is happening?

Re: FormsAuthentication and Session timeout problem.

Mark J. Miller4-Apr-08 4:34

Mark J. Miller

4-Apr-08 4:34

Have you checked FormsAuthentication.CookiesSupported to verify if the client supports cookies?

If that doesn't help, post your code and config file again to show us what it looks like now with your changes.

Mark's blog: developMENTALmadness.blogspot.com

Re: FormsAuthentication and Session timeout problem.

ESTAN8-Apr-08 2:20

ESTAN

8-Apr-08 2:20

Sorry, i was a bit out.

I did a check on FormsAuthentication.CookiesSupported and it says true (i logged it to a file)
So i am a bit clueless here why this is happening.

webconfig:

<br />
<system.web><br />
		<sessionState timeout="60"/><br />
    </system.web><br />
<br />
<system.web><br />
      <authentication mode="Forms"><br />
        <forms path="BackOffice" loginUrl="BackOffice/Default.aspx?state=Timeout" defaultUrl="BackOffice/Home.aspx" timeout="55" cookieless="UseCookies"><br />
        </forms><br />
      </authentication><br />
      <authorization><br />
        <!--<allow users="*"/>--><br />
        <deny users="?"/><br />
      </authorization><br />
    </system.web><br />

The validation code:

Protected Sub btnValidate_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnValidate.Click<br />
        Dim dt As DataTable = db.GetData("SELECT Active FROM tblUsers WHERE Email = '" & tbxEmail.Text.Trim & "' and Password = '" & Replace(tbxPassword.Text, "'", "''") & "'")<br />
<br />
        If (dt.Rows.Count = 0) Then<br />
            ' This means that the combination of the email address and the password could not be found in the database<br />
            lblLoginMessage.Text = CType(ViewState("vsAlerts"), Hashtable)("Alert1").ToString<br />
        Else<br />
            If (CType(dt.Rows(0)(0), Int32) = 0) Then<br />
                ' This means that the user is not allowed to log in, the Active bit is set to 0<br />
                lblLoginMessage.Text = CType(ViewState("vsAlerts"), Hashtable)("Alert2").ToString<br />
            Else<br />
                Session.Add("User", tbxEmail.Text.Trim)<br />
                Session.Add("Date", DateTime.Now.ToString)<br />
                Session.Add("Active", 1)<br />
<br />
                Common.LogInfo("FormsAuthentication.CookiesSupported: " & FormsAuthentication.CookiesSupported(), 3, Parameters.LOG_FILE, "clssDbAccess.SetData")<br />
<br />
                FormsAuthentication.RedirectFromLoginPage(tbxEmail.Text.Trim, False)<br />
            End If<br />
        End If<br />
    End Sub

to insert a new record from gridview control

sudhadotnet2-Apr-08 4:37

sudhadotnet

2-Apr-08 4:37

can anyone please give me an idea how to insert new records from a gridview control by using a button having text ADD in the header

sudha

Re: to insert a new record from gridview control

led mike2-Apr-08 6:50

led mike

2-Apr-08 6:50

sudhadotnet wrote:
can anyone please give me an idea how to

Ever heard of MSDN?[^]

led mike

iframe src from code

saud_a_k2-Apr-08 3:46

saud_a_k

2-Apr-08 3:46

Hi, Sorry if this is asked already,
I am doing...

button_Click(...)<br />
{<br />
    literal1.Text="<iframe src="../Forms/NEW_Forms/MyForm.aspx" width="100%" height="100%"></iframe>";<br />
}

This works fine on my local machine wen I run is from VS
I cannot get the page when I put this on a local server, Should I change the URL in any way?
I tried using

literal1.Text="<iframe src="~/Forms/NEW_Forms/MyForm.aspx" width="100%" height="100%</iframe">";</iframe>

But no result,
This one is real easy for you guys, Please help.

_____________________________________________________
Yea! I could be wrong...

Re: iframe src from code

eyeseetee2-Apr-08 4:44

eyeseetee

2-Apr-08 4:44

check that the path for the folder is exactly the same as above, also try specifiying the full path and see if that works

Re: iframe src from code

Krishnraj2-Apr-08 19:41

Krishnraj

2-Apr-08 19:41

Hi,

try the below code, hey but i m not sure its working..but let see

button_Click(...)
{
literal1.Text="<iframe src="./Forms/NEW_Forms/MyForm.aspx" width="100%" height="100%"></iframe>";
}

If above code is not working then try using Server.MapPath("MyForm.aspx")

I hope it will help u..

Regards,

Rana Krishnraj

How to display data in content place holder dynamically

psspl2-Apr-08 2:51

psspl

2-Apr-08 2:51

hi all,

i am developing a content management system in asp.net with C#. i have a master page named "Master1.master" with 5 content place holders-"cphHeader, cphLeft,cphCenter,cphright,cphbottom". i have another default.aspx page which is inherited from the "Master1.master". it takes as input,the following fields from the user :
1. text to be displayed.(Textbox)
2. Content holder where the text will be displayed (dropdown having names of all the 5 content holders mentioned above.).
these things entered by the user are stored in the database. The text entered by the user should be displayed in the content holder mentioned above.

How do i do it?? is there any facility which helps us access the content place holders on the default.aspx.cs page.

thanks in advance.please reply as soon as possible.

Re: How to display data in content place holder dynamically

Matthew Ellis2-Apr-08 3:38

Matthew Ellis

2-Apr-08 3:38

You can add it to the CPH Control's collection:

ContentPlaceHolder cph = (ContentPlaceHolder)Master.FindControl("PrimaryContent");<br />
if (cph != null)<br />
    cph.Controls.Add(new LiteralControl("The text string"));

Re: How to display data in content place holder dynamically

eyeseetee2-Apr-08 3:46

eyeseetee

2-Apr-08 3:46

Im not too sure on this but would you be able to put the content holders in a global or common methods page, this way you can acces them from any page.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.