ASP.NET

Re: how to restrict image folder from direct access

26-Aug-08 20:34

Hi All,
I've a image gallery website where members can upload and restrict the access to few friends. The problem is, images are directly accessible from browser. How could I restrict specific folder to accessible from aspx pages only.

Regards,
Neeraj

Abhishek Sur26-Aug-08 21:00

Abhishek Sur

26-Aug-08 21:00

I have done similar to this..
I have used a webservice to get the path of the requested images from an encrypted session guid which is created during login...

Abhishek Sur

Re: how to restrict image folder from direct access

Neeraj Arora26-Aug-08 21:10

Re: how to restrict image folder from direct access

26-Aug-08 21:10

Thanks for the reply. When I show image, anybody can check the relative path from viewsource and try other photos from same folder. Please correct me if I'm wrong or I understood your reply wrongly.

Rgds,
Neeraj

N a v a n e e t h26-Aug-08 21:05

N a v a n e e t h

26-Aug-08 21:05

Neeraj Arora wrote:
How could I restrict specific folder to accessible from aspx pages only

Write a http handler which handles requests for images. Check the authentication and display necessary messages. Make sure you map the extensions to ASP.NET in IIS settings.

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

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Re: how to restrict image folder from direct access

Neeraj Arora26-Aug-08 21:08

Re: how to restrict image folder from direct access

26-Aug-08 21:08

Thanks for reply but I'm not aware how to write this type of handler. Could you help me for a sample.

Rgds,
Neeraj

N a v a n e e t h26-Aug-08 23:30

N a v a n e e t h

26-Aug-08 23:30

here[^] you go

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

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Re: how to restrict image folder from direct access

Neeraj Arora27-Aug-08 1:02

Re: how to restrict image folder from direct access

27-Aug-08 1:02

Thanks buddy.

NeverHeardOfMe26-Aug-08 22:46

NeverHeardOfMe

26-Aug-08 22:46

There are two ways of doing this - an easy "hack" and a "proper" way...

The easy way is simply to save your images with randomly assigned (GUID-type thing) filenames which can't be guessed. This doesn't stop people linking directly to your images once they know the filename of course, but unless your images are highly popular that is unlikely to be a problem, but it will stop them from finding images until you reveal the address.

The proper way is to write a custom handler; you can find an example here[^]. Note though that depending on your version of IIS you may need to perform some steps differently - that article assumes IIS6; once you get above this you need to write your config file differntly, for one thing...

Suggestion for continous printing

Jagwinder Walia26-Aug-08 20:29

Jagwinder Walia

26-Aug-08 20:29

hi all
i have created a form for printing of sale bill.
when user create a bill a voucher number is generated. i pick that voucher number and generate its printing. while generating the printing i m creating a html for the printing and storing that html in string.
when the all html is genearated i pass that string to another page where a javascript function is called. A pop up populate and user click on print button

but now i want this printing for 10 - 20 voucher number(means continous printing). the problem is if i generate html for 10-20 voucher then i take too much time.

i dont know to do this.
any suggestion

Er. Jagwinder Singh

Re: Suggestion for continous printing

N a v a n e e t h26-Aug-08 21:07

N a v a n e e t h

26-Aug-08 21:07

Webapplications are not suitable for what you are trying to do. Consider changing your design.

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Re: Suggestion for continous printing

Jagwinder Walia26-Aug-08 21:28

Jagwinder Walia

26-Aug-08 21:28

i have all builded the application now how i can change its design

Er. Jagwinder Singh

The server threw an exception. (Exception from HRESULT: 0x80010105 (RPC_E_SERVERFAULT)) for VB DLL

Jai Sankar N26-Aug-08 20:18

Jai Sankar N

26-Aug-08 20:18

I am using COM DLL (Which is developed in VB) in .Net to fill the Schools Name in Dropdown list but it is not filling (it is giving this error: Server Threw an Exception: RPC_E_SERVERFAULT’). In development machine it is working fine and we have another product which is not using this COM DLL that application also working fine. It seems COM DLL having some issue with Network Path

Our Product installed in Windows 2003, which is running IIS 6.0 in the same machine but our Data (Contains collection of Files) is other machine (Jai-XP PC). Both the machines are connected under one

Domain controller.

In IIS under Directory Security I gave domain user ID and password and i gave the same user for data also.

How we can solve Interop services in domain controller environment.

I hope somebody will resolve...

Thanks & Regards,
Jai Sankar N.

fil uploade with update panel of ajax

UD(IA)26-Aug-08 20:09

26-Aug-08 20:09

simple example :- i have problem in this code how can i remove.

<body>
    <form id="form1" runat="server">
    <div>
        <asp:scriptmanager id="ScriptManager1" runat="server" xmlns:asp="#unknown">
        </asp:scriptmanager>
        <asp:updatepanel id="UpdatePanel1" runat="server" xmlns:asp="#unknown">
            <contenttemplate>
                 <asp:updatepanel id="UpdatePanel2" runat="server" childrenastriggers="False">
                    UpdateMode="Conditional">
                    <contenttemplate>
    <asp:fileupload runat="server" id="fu1" />
                    </contenttemplate>
                    <triggers>
                        <asp:asyncpostbacktrigger controlid="btn" eventname="Click" />
                    </triggers>
                </asp:updatepanel>
                 
    <asp:button runat="server" id="btn" text="ok" onclick="btn_Click" width="41px" />
            </contenttemplate>
        </asp:updatepanel>
           
    </div>
    </form>
</body>

protected void btn_Click(object sender, EventArgs e)
    {
        string str11 = fu1.FileName;
        if (fu1.FileName != "")
        {
            //string a = Convert.ToString(ViewState["emp_id"].ToString());
            string str = "~/images/photo/";
            str = Server.MapPath(str);
            str = str + "a" + ".jpg";
            //FileUpload2.SaveAs(str);
            //r1["emp_photo_url"] = "~/images/photo/" + a + ".jpg";
            //dt.update(tblco, "select * from tbl_product");

        }
    }

str11 have nothing while select a file and first update panel is also necessary for my code. please solve my problem? Big Grin | :-D

I will do my best?

Brij26-Aug-08 20:30

Brij

26-Aug-08 20:30

Try this:
put fileupload control and button in two separate update panel and updatemode always.

Cheers!!
Brij

UD(IA)26-Aug-08 21:45

26-Aug-08 21:45

<form id="form1" runat="server">
<div>
    <asp:scriptmanager id="ScriptManager1" runat="server" xmlns:asp="#unknown">
    </asp:scriptmanager>
    <asp:updatepanel id="UpdatePanel1" runat="server" xmlns:asp="#unknown">
        <contenttemplate>
             <asp:updatepanel id="UpdatePanel2" runat="server" childrenastriggers="False">
                UpdateMode="Conditional">
                <contenttemplate>
<asp:fileupload runat="server" id="fu1" />
                </contenttemplate>
                <triggers>
                    <asp:asyncpostbacktrigger controlid="btn" eventname="Click" />
                </triggers>
            </asp:updatepanel>
               
            <asp:updatepanel id="UpdatePanel3" runat="server">
                <contenttemplate>
<asp:button runat="server" id="btn" text="ok" onclick="btn_Click" width="41px" />
                </contenttemplate>
            </asp:updatepanel>
        </contenttemplate>
    </asp:updatepanel>
         
</div>
</form>

as u told me i do this but not work. Big Grin | :-D

I will do my best?

Brij26-Aug-08 22:01

Brij

26-Aug-08 22:01

Can you show me where is the Closing tag of update panel

Cheers!!
Brij

UD(IA)26-Aug-08 22:09

26-Aug-08 22:09

thanks for reply and for help
i want to clear you that
i have a grid view in middle panel which having datagrid control when edit and add button is clicked on right panel open edit and add panel and i want that page will not post back so i use ajax(for retriving) so i take datagrid in update panel and all panel related to that grid have another update panel.
as you answer that i have this fileupload and button on other update panel(seprate panel) than application work like firstly edit your all info and after that go for new menu if he want to edit image also. for this reason i cant take this in seprate panel.
please tell me what to do on this condition? Big Grin | :-D

I will do my best?

Abhishek Sur26-Aug-08 21:24

Abhishek Sur

26-Aug-08 21:24

use
<asp:postbacktrigger controlid="btn" />>

to find better example see
http://www.codeproject.com/KB/ajax/simpleajaxupload.aspx[^]

Its a good example... Rose | [Rose]

Abhishek Sur

UD(IA)26-Aug-08 22:01

26-Aug-08 22:01

thanks to reply but error is shown:-
Control with ID 'btn' cannot be registered through both RegisterAsyncPostBackControl and RegisterPostBackControl. This can happen if you have conflicting triggers associated with the target control.
Smile | :)

I will do my best?

Tripathi Swati26-Aug-08 23:36

Tripathi Swati

26-Aug-08 23:36

hi,
i am not very much clear for your question but as per your question what i can suggest you is

1> First put all the update panels in one updatepanel and
set childrenastriggers=true and updatemode=always

2> Put both the controls in one updatepanel only..

Reasons are not Important but Results are Important.
Swati Tripathi

UD(IA)27-Aug-08 1:18

27-Aug-08 1:18

Thnaks to reply
yes i have already done this but problem is that i am use debug and found that fileuplod.filename is empty means it can't get file name. while i am selecting a .jpg file.

I will do my best?

Tripathi Swati27-Aug-08 1:23

Tripathi Swati

27-Aug-08 1:23

hey please check your triggers.

Reasons are not Important but Results are Important.
Swati Tripathi

UD(IA)27-Aug-08 1:39