authentication issue of IIS 6.0 - ASP.NET Discussion Boards

Re: How to detect the user IP?

Abhishek Sur20-Sep-09 4:42

Abhishek Sur

20-Sep-09 4:42

Client IP could be found from

ip=Request.ServerVariables("HTTP_X_FORWARDED_FOR");
if(ip==string.Empty)
{
 ip=Request.ServerVariables("REMOTE_ADDR");
}

Abhishek Sur

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Re: How to detect the user IP?

Seraph_summer20-Sep-09 5:04

Seraph_summer

20-Sep-09 5:04

Hi, thanks!

I tried this code on my own PC, it shows the IP: 127.0.0.1

this is obviouly not right. This is not the right IP of my computer.

I saw from internet, there are also others have the same problem. then some people suggest using the following code:

string strHostName = System.Net.Dns.GetHostName();
string clientIPAddress = System.Net.Dns.GetHostAddresses(strHostName).GetValue(0).ToString();

but it shows the result as follows:

fe70::8c3:258f:3f47:fd6b%12

this is IP??

do you have more comments on this?

thank you again!!

Re: How to detect the user IP?

Abhishek Sur20-Sep-09 5:24

Abhishek Sur

20-Sep-09 5:24

Seraph_summer wrote:
string strHostName = System.Net.Dns.GetHostName();
string clientIPAddress = System.Net.Dns.GetHostAddresses(strHostName).GetValue(0).ToString();

This is the most funniest code Big Grin | :-D

. It means it will try to resolve the dns of the host. Even I saw this. I dont know how people give suggestions to these to resolve IP. .. Laugh | :laugh:

If you are using localhost, the ip will always be 127.0.0.1 as the server and client both the same. Try putting in IIS and get the IP from your local machine. I think you will get the IP address properly.
You can also try
Request.ServerVariables["REMOTE_HOST"]
or
Request.UserHostAddress

It will give the same output as well. Big Grin | :-D

Abhishek Sur

My Latest Articles
Create CLR objects in SQL Server 2005
C# Uncommon Keywords
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Re: How to detect the user IP?

Seraph_summer20-Sep-09 5:28

Seraph_summer

20-Sep-09 5:28

thanks, I see!

Re: How to detect the user IP?

ABitSmart20-Sep-09 15:40

ABitSmart

20-Sep-09 15:40

If the user is behind a proxy then REMOTE_ADDR will be the proxy IP address and HTTP_X_FORWARDED_FOR will be the client IP address. HTTP_X_FORWARDED_FOR can consist of multiple comma separated IP addresses for each proxy the request passes through. Generally, client IP is the first of them.

Finally, you can rely on the above methods only for Transparent proxies. There is no way to trace the actual IP in case of Anonymous or Distorting proxies.

One more good tool for finding country from an IP is this one[^] on codeplex.

ASP.NET Login Name Problem

morteza45120-Sep-09 1:50

morteza451

20-Sep-09 1:50

Please Help ,I have 3 day for my presentation in university just
I put a Login Name control into My pages but it show my page name.I am sure User Log in because Login Status Control show LoggedIN template but LoginName Can't show how user login.
I use VS2008(C#) without service pack.PLZ Hlp

Re: ASP.NET Login Name Problem

Abhijit Jana20-Sep-09 2:49

Abhijit Jana

20-Sep-09 2:49

morteza451 wrote:
I put a Login Name control into My pages but it show my page name.I am sure User Log in because Login Status Control show LoggedIN template but LoginName Can't show how user login.

Can you please give us the code block ?

If you want to know more about these controls, please read this
ASP.NET Login Controls Overview[^]

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
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authentication issue of IIS 6.0

George_George19-Sep-09 19:48

George_George

19-Sep-09 19:48

Hello everyone,

I am using Windows Server 2003 + VSTS 2008 + .Net 3.5 + C# + ASP.Net + IIS 6.0. I host some files (wmv video file and html file) on the web server, I want to know whether there are any easy to use authentication approach to let user input username and password before they can access (I want to prevent anonymous access)? Since the web site has also aspx ASP.Net page, and I want to use an unified authentication solution for wmv, html and aspx page. If prefer any solution which utilizes username and password stored in SQL Server database which my application already has/use.

Any ideas?

thanks in advance,
George

Re: authentication issue of IIS 6.0

Abhijit Jana19-Sep-09 21:21

Abhijit Jana

19-Sep-09 21:21

Hey George,
I am seeing ur question after a long time. How are u doing ?

George_George wrote:
If prefer any solution which utilizes username and password stored in SQL Server database which my application already has/use.

So what is the problem with that ? why you are not authenticate the user from SQL Server itself . maintin session for giving the proper access of the page. or you can implement Roles for that !

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.

Re: authentication issue of IIS 6.0

George_George19-Sep-09 22:01

George_George

19-Sep-09 22:01

I am fine, thank! Any ideas to my question?

problem with new line in the text box

prasadbuddhika19-Sep-09 16:41

prasadbuddhika

19-Sep-09 16:41

in my asp page i have a text box and i want add a text and newline and text again repeatedly.

i uase txt1.text +="hello"+Environment.NewLine ;

but the newline is not working. any idea why ?

Re: problem with new line in the text box

Christian Graus19-Sep-09 16:55

Christian Graus

19-Sep-09 16:55

Because you've not set the control to be multiline. It's a property on the control.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Re: problem with new line in the text box

prasadbuddhika19-Sep-09 18:48

prasadbuddhika

19-Sep-09 18:48

thanx . it's the textmode = multiline ;

Collect Visitor's IP

sjmclean19-Sep-09 11:36

sjmclean

19-Sep-09 11:36

Anyone got a link to a good tutorial which shows how to create a read-only text-box in a Web Application which automatically collects a visitor's IP Address?

Thanks

Re: Collect Visitor's IP

Christian Graus19-Sep-09 11:43

Christian Graus

19-Sep-09 11:43

It's in the Request object ( the IP address ). Use a label, that's read only.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Re: Collect Visitor's IP

dan!sh 19-Sep-09 20:42

dan!sh

19-Sep-09 20:42

Why was this reply voted one?

It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD

Re: Collect Visitor's IP

Manas Bhardwaj20-Sep-09 0:00

Manas Bhardwaj

20-Sep-09 0:00

Because, he did not give him the complete code snippet. Poke tongue | ;-P

Manas Bhardwaj
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

Re: Collect Visitor's IP

Abhishek Sur19-Sep-09 13:23

Abhishek Sur

19-Sep-09 13:23

Here you go...

txtbox.Text = Request.ServerVariables["REMOTE_HOST"];
txtbox.Attribures.Add("readonly", "readonly");

Abhishek Sur

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Re: Collect Visitor's IP

Robert_Pan19-Sep-09 18:28

Robert_Pan

19-Sep-09 18:28

public static string GetLocalAddress()
    {
        IPAddress[] addressLocal = Dns.GetHostByName(Dns.GetHostName()).AddressList;
        if (addressLocal.Length > 0)
        {
            return addressLocal[addressLocal.Length - 1].ToString();
        }
        return "127.0.0.1";
        
    }

Re: Collect Visitor's IP

Manas Bhardwaj19-Sep-09 23:57

Manas Bhardwaj

19-Sep-09 23:57

This would always give the server address.

Manas Bhardwaj
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

How to clear Client Cache

ranjan_namitaputra19-Sep-09 9:57

ranjan_namitaputra

19-Sep-09 9:57

I am building a website, and want to clear cache of all the clients from server at a particular time. Please let me know how to do this. Blush | :O

Re: How to clear Client Cache

Abhishek Sur19-Sep-09 10:09

Abhishek Sur

19-Sep-09 10:09

Have you tried

Response.Cache.SetNoStore();

when one visits your page ?
Big Grin | :-D

Also add these

Response.ExpiresAbsolute=DateTime.Now.AddDays(-1d);
Response.Expires =-1500;
Response.CacheControl = "no-cache";

Hope this will help.

Abhishek Sur

My Latest Articles
Create CLR objects in SQL Server 2005
C# Uncommon Keywords
Read/Write Excel using OleDB
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Re: How to clear Client Cache

ranjan_namitaputra19-Sep-09 10:15

ranjan_namitaputra

19-Sep-09 10:15

Thank you so much Abhishek for your help.
I think this will help me.

Also I have seen your articles listed for voting in home page.

http://www.codeproject.com/script/Surveys/VoteForm.aspx?srvid=956[^]

It is great. I have voted you.
Thanks for the lovely article as well. Smile | :)

Re: How to clear Client Cache

Abhishek Sur19-Sep-09 10:16

Abhishek Sur

19-Sep-09 10:16

Thank you so much for your vote.
I hope I could produce more like this in future. $Shucks | :-\$

Cheers.

Abhishek Sur

My Latest Articles
Create CLR objects in SQL Server 2005
C# Uncommon Keywords
Read/Write Excel using OleDB
Don't forget to click "Good Answer" if you like to.

Re: How to clear Client Cache

ranjan_namitaputra19-Sep-09 10:22

ranjan_namitaputra

19-Sep-09 10:22

Thank you for your reply and wish you luck in this.

I think you will win. Smile | :)

Keep doing your good work. Cool | :cool:

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