ASP.NET

N a v a n e e t h2-Nov-09 17:46

N a v a n e e t h

2-Nov-09 17:46

This is most frequently asked question. There is a search box on the right top corner. You will find plenty of answers if you use that.

To answer the question, you need keep a flag in the database which will be set when user logs in and unset when logs out. When a user logs in, check the status of this flag and if it is set, say that user has logged already. This method is not fully foolproof. A common problem of this approach is your flag will not reset if user closes the browser without logging out.

Hooking JS method on window close and doing AJAX request to reset the flag is one possible option. But since JS can be turned off at the client side, this method is not reliable. A better approach is to record the last activity time of the user and a database job resets the flag if current time - last activity time is greater than session expiry limit.

A combination of all these methods will work well.

Best wishes,
Navaneeth

Amit Agarrwal2-Nov-09 17:58

Amit Agarrwal

2-Nov-09 17:58

thank you so much for the very nice and approchable answer.

i got two of your answers.

but

"A better approach is to record the last activity time of the user and a database job resets the flag if current time - last activity time is greater than session expiry limit."

can you please little Elaborate this approach.how to record the users last activity time.

and in the search box what will the correct keywords to find out the answer.

Thanks

Amit Agarwal

_Damian S_2-Nov-09 18:13

_Damian S_

2-Nov-09 18:13

Amit Agarrwal wrote:
how to record the users last activity time

Whenever there's a postback (ie: the user submits a form etc, clicks a button, whatever), simply call a function that updates a field in your user table with the current date/time.

I don't have ADHD, I have ADOS... Attention Deficit oooh SHINY!!

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Validating a filename starting with numbers

N a v a n e e t h2-Nov-09 20:05

N a v a n e e t h

2-Nov-09 20:05

I meant exactly what Damian said. This will allow you to identify how long a user is inactive and reset the flag if he is inactive for long time.

Best wishes,
Navaneeth

meeram3952-Nov-09 17:26

meeram395

2-Nov-09 17:26

I have a file upload control in my application. The user can upload a file starting with alphabets as well as numerals. However, while uploading a file with numbers ,it is giving error. I have the following validation expression:

ValidationExpression="[a-zA-Z\\].*(.txt|.csv|.CSV)$"

How can I include the validation for numbers also? I tried 0-9 as below , but it didn' worked.
[a-zA-Z0-9\\]

Please help

Success is the good fortune that comes from aspiration, desperation, perspiration and inspiration.

Re: Validating a filename starting with numbers

Christian Graus2-Nov-09 18:22

Christian Graus

2-Nov-09 18:22

Why limit filenames at all ?

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: Validating a filename starting with numbers

N a v a n e e t h2-Nov-09 20:06

N a v a n e e t h

2-Nov-09 20:06

IMO, you only have to test for supported extensions. Work with Path.GetExtension[^] method. You don't need to any regular expression.

Best wishes,
Navaneeth

How can I use a static class that is placed in another folder

fiaolle2-Nov-09 13:25

Re: How can I use a static class that is placed in another folder

2-Nov-09 13:25

Hi
I don't know how I can use a static class, that is placed in another folder from where I'm calling it.

I have the code below in default.aspx.cs, witch is placed under the folders Test1/Test2
(\WebSite12\Test1\Test2\Default.aspx.cs)

public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            SqlConnection s = Databas.con;
        }
    }

The class, Databas.cs is placed in the root of the website. I get the error The name 'Databas' does not exist in the current context. I have the same problem with the global.asax, whitch is also placed in the root.

Please Help
Fia

Christian Graus2-Nov-09 13:44

Christian Graus

2-Nov-09 13:44

The root is the wrong place to put it, in every way. There's a folder for your application code, it has to go in there.

Why would you want to return a SQLConnection into the presentation layer ?

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: How can I use a static class that is placed in another folder

fiaolle3-Nov-09 8:44

Re: How can I use a static class that is placed in another folder

3-Nov-09 8:44

Hi What I'm trying to say it that it doesn't find it, so I can't use it in the code behind.

Fia

fiaolle2-Nov-09 20:26

Re: How can I use a static class that is placed in another folder

2-Nov-09 20:26

Hi, thanks for your answer

I put the Databas.cs in the folder App_Code, but I couldn't use it anyway. Is there something else I have to do, then writing SqlConnection s= Databas.con.
I have it like this because I don't want to write the connection string for every page.
I have trouble with using the global.asax also, should that file also be placed in App_Code. But as I said I can't use it anyway.

Please Help

Fia

fiaolle2-Nov-09 20:41

Re: How can I use a static class that is placed in another folder

2-Nov-09 20:41

Hi

Sorry, I placed the Databas.cs file in the App_Data folder, but now I have it in the App_Code folder and it's working, thanks. But what about global.asax. That file is placed in the root of the website, but I can't use it anyway.

Fia

Christian Graus3-Nov-09 8:40

Christian Graus

3-Nov-09 8:40

What do you mean you can't use it ? What do you think it's for ?

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.

Web Service Reference in Asp.net (WSE 2.0)

mark_me2-Nov-09 8:44

mark_me

2-Nov-09 8:44

Hi,
i have a windows services that uses a service reference to amazon web service. I have created a dll that actually has the service reference and the dll is called by my windows service. My windows service works fine. I also have a local asp.net application that uses the same dll and works great (Probably because dll and asp.net application are created on same machine). Recently, i moved the asp.net application to LAN Server. I copied the dll into bin folder. I also copied the service reference folder to bin folder and it turns out that the asp.net application is not using the service reference. It is calling my dll but the dll inturn isn't using the service reference.
Can anybody please provide help on where should i copy the service reference folder or files. or wat approach i should take to solve this issue. I googled but it seems that i am not googling appropriate keywords. Any help, link etc will be highly appreciated

Thanks
Mark

Abhishek Sur2-Nov-09 9:32

2-Nov-09 9:32

Well, whenever you add reference to a web service, Visual Studio will add one settings file and create the entry to it which points to the web service location.

It may also create one entry to Web.config.
Have a look if you have this configured properly for your compiled assembly. Smile | :)

Abhishek Sur
Don't forget to click "Good Answer" if you like this Solution.
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mark_me2-Nov-09 10:04

mark_me

2-Nov-09 10:04

Hmmm... , on my local machine i added the reference to dll (ie my dll) thru website->add reference, whereas on the server, i just placed my dll in bin folder because i thought that should be enuf. On my local machine, i didn't make any change to add service reference so i believe web.config should have not changed... Am not sure about settings file though... It seems that by adding reference thru website->add reference, asp.net on my local machine knows where to find the service reference files but when added to only bin, asp.net doesnot know whre to get service reference from ... Is there anyother way of adding reference on server? I have tried placing the files everywhere on server but it isn't working... I need to see the web.config file ...
Thanks for replying

Abhishek Sur2-Nov-09 10:24

2-Nov-09 10:24

Well, Visual studio always does some tricky things which are hidden from normal users.

Say if you are adding a web reference in class library, it will produce one App.config file and place the config entries there. If you reference the dll from your website, the final build will merge the entries of all the class libraries referenced to its web.config. Thus you will find the Web reference working perfectly.

This is just to allow everything configurable. Such that, if you change your server, changing just the config path will do.

On your machine, if you do reference the assembly through Visual Studio, it will automatically change configuration and make alteration so that your project works. If you want this by Copying the bin folder, you need to manually change the config file yourself to make it work. Smile | :)

Abhishek Sur
Don't forget to click "Good Answer" if you like this Solution.
My Latest Articles-->
Microsoft Bing MAP using Javascript
CLR objects in SQL Server 2005
Uncommon C# Keywords/xml>

mark_me2-Nov-09 12:02

mark_me

2-Nov-09 12:02

Hi ,thanks..
It seems that i need to look into all config files... I will let you know if i am not able to solve the problem...

Thanks
Mark

Abhishek Sur2-Nov-09 20:14

Passing Information from GridView Deactivates the Select Row Command

2-Nov-09 20:14

mark_me wrote:
I will let you know if i am not able to solve the problem...

Sure budd..
Thumbs Up | :thumbsup:

Abhishek Sur
Don't forget to click "Good Answer" if you like this Solution.
My Latest Articles-->
Microsoft Bing MAP using Javascript
CLR objects in SQL Server 2005
Uncommon C# Keywords/xml>

PDTUM2-Nov-09 7:43

PDTUM

2-Nov-09 7:43

Good Morning,

I am trying to pass the information from GridView cells to another asp.net page using VS2008 (C#). This is done by using a Select link in each row to pass the information from that row. I am using the following code:

<asp:HyperLinkField DataNavigateUrlFields="CallCreated, Call_Id, Sponsor, ConcurrentStudies, StudyId, NCTID,
Country, TimeZone, Contact, Title, Phone, Email, SubOn, SubBy"
DataNavigateUrlFormatString="CreateCall.aspx?CallCreated={0}&Call_Id={1}&Sponsor={2}&ConcurrentStudies={3}&StudyId={4}&NCTID={5}
&Country={6}&TimeZone={7}&Contact={8}&Title={9}&Phone={10}&Email={11}&SubOn={12}&SubBy={13}" Text="Select" />

Actually, it works perfectly until I try to add one particular column from the grid called CtWebPage. When this is added, the "Select" link which forwards the information to the receiving page becomes inactive. That is to say, the information is viewable in the grid, as received from the Sql query, but the link becomes inoperable. As long as I do not use this one column, it works fine. I have tried renaming the column and changing its data type from (varchar) to (nvarchar) just in case, but it does not make any difference. The information passed from this column is a string representation of a web page address (in case that makes a difference). I have tried renaming the problem column and it makes no difference.....it still does not work!. I have tried adding a new column, called Test, and put a single word in it for data, and it works fine. I had this happen once last year and I gave up and left the column out, thinking it was a fluke. Obviously, it was not. This time, I am determined to resolve it...with YOUR help, if you please.

Thank You, Pat

DOTNETNUKE ------------Please help me

naflas2-Nov-09 4:09

naflas

2-Nov-09 4:09

At my new work i have to design & implement a online purchae order system for internel staff .
steps are

1. user can order any product - purchase order number should be generated automatically

2. if the user not authorised to approve the order user should send the notification to relevnt department for approval by email.

3 once it has been approved vendor should receive the order. also copy should go to finance

my employer is using dotnetnuke .. could you please provide me a SAMPLE APPLICATION OR THE WAY how i should be implemented ?

Many thanks

Re: DOTNETNUKE ------------Please help me

Abhishek Sur2-Nov-09 4:16