ASP.NET

1-May-09 5:17

Hi guys,
I am new to ASP.net and I am trying to achieve the following:
I have created a login page where I want only 1 user logged in at any period. Is there a way to get the current # of user logged in, in ASP.Net?

Basically, when second user tries to login, I want to check if there is another user logged in. I tried using session but that doesn't work because each user is on a different computer browsing the site.

Please help!!!!

Sameer

Yusuf1-May-09 5:24

1-May-09 5:24

Saamir wrote:
I have created a login page where I want only 1 user logged in at any period

what do you meant only 1 use logged in at any time? I hope you not restricting Only ONE user to connect to your application at a time. If that is what you want, you are in the wrong place. Web app are meant to be used by multiple users at a time.

If you want to limit to a single login to each user, then you need to track who is logged in. When a user logs in then flag that in your users table. Then when the user logs out, remove the flag. Then you need to handle end of session event and remove the flag for that user. When you notice a user tries to log in multiple times, then you can redirect them to different page (may be user already logged in message)

Yusuf
May I help you?

Saamir1-May-09 5:31

1-May-09 5:31

Hi Yusuf,
Yes I want to only allow one user at a time on the webpage considering the sensitive information processing the page does. Are you saying I should use Session_Start and Session_end? If so, pardon my ignorance but how do I implement these functions?

Sameer

Yusuf1-May-09 5:32

1-May-09 5:32

Saamir wrote:
Session_end

Remove the logged on status of the user

Yusuf
May I help you?

Saamir1-May-09 5:36

1-May-09 5:36

Yusuf,
I know that is what I need to do but my question is how do I go about doing that. If I am updating the database then how do I know that the user has not just closed the webpage instead of loging out.

Do you know what I mean?

Sameer

Yusuf1-May-09 5:53

1-May-09 5:53

I don't know your level of asp.net competency, but your question is a bit silly

- Session_End signals the session is expiring, has nothing to do with user logging out or browser closing

- Browser Closing - There is no way you can detect this from the server. You can write some js to detect browser closing ( mind you there is no browser support for this, all is behind the door hack)

- user logout - the user clicked on logout, so you know that, don't you, don't you....

Yusuf
May I help you?

Saamir1-May-09 5:59

1-May-09 5:59

Yusuf,
dude, it is just a question, no need for expertise talk or sarcastic talk. Hats off to your smartness and thank you for your help.

Sameer

Yusuf1-May-09 6:27

1-May-09 6:27

no pun intended Wink | ;)

Yusuf
May I help you?

xml

AndyInUK1-May-09 3:48

1-May-09 3:48

Hi,

I have created a string using StringBuilder class. This string is an xml.
Now my question is that how do i pass this string to xmlTextWriter or XmlDocument class to get the correct format of the string ?

I don't want to start creating the xml using XmlDocument class or XmlTextWriter as it's really cumbersome to nest the xml in it. It's all done using StringBuilder and now i just have to correct the format of the string..

Any idea ??

Thank You
Andyy

MidwestLimey1-May-09 3:59

1-May-09 3:59

XmlDocument has a method LoadXml that takes a string.

10110011001111101010101000001000001101001010001010100000100000101000001000111100010110001011001011

AndyInUK1-May-09 4:04

1-May-09 4:04

ok for instance,

testStr is StringBuilder type with having complete xml stored in it.
Now can you please show me the syntax, how can i pass this testStr to XmlDocument to get the correct xml format output.

Thank You
Andy

MidwestLimey1-May-09 4:40

1-May-09 4:40

What are you trying to do exactly? I thought perhaps you were trying to validate the xml, in which case you could by trying to load it.

10110011001111101010101000001000001101001010001010100000100000101000001000111100010110001011001011

AndyInUK1-May-09 4:49

1-May-09 4:49

created xml using StringBuilder which is giving non - xml format as a output but i want that string to be displayed like a normal xml file.

led mike1-May-09 4:36

led mike

1-May-09 4:36

AndyInUK wrote:
and now i just have to correct the format of the string..

What does that mean?

AndyInUK1-May-09 4:45

1-May-09 4:45

basically xml is stored as a string using StringBuilder which ends up with non xml format and hard to read. So one way is that i fix the format manually which is again a pain. So i am asking if there is any second way which can correct the format of the string as xml.

I hope it's clear now.

MidwestLimey1-May-09 4:49

Gridview setting column widths

1-May-09 4:49

So you want pretty XML? Load it into an XmlDocument, then use either WriteTo or WriteContentTo (I forget what the distinction is) to write to an XmlTextWriter. The XmlTextWriter can be configured for indentation. The XmlTextWriter will need to use an underlying stream, just use a MemoryStream for that. You should be able to read the result via a StreamReader.

10110011001111101010101000001000001101001010001010100000100000101000001000111100010110001011001011

XmlTextWriter

David Mujica1-May-09 5:48

David Mujica

1-May-09 5:48

I would take the time to learn about the XmlTextWriter. It made my life so much easier when I had to create an XML file for integration with another system.

Use this to get started ...

Dim writer As New XmlTextWriter(sXMLPath & sXMLName, Nothing)

 'Use automatic indentation for readability.
writer.Formatting = Formatting.Indented

'Write the root element
writer.WriteStartElement("REPORT")
writer.WriteStartElement("FORMULA")
writer.WriteElementString("FORMULA_ID", sField0)
writer.WriteElementString("FORMULA_CODE", sField1)
writer.WriteElementString("VERSION", sField2)
writer.WriteElementString("DESCRIPTION", sField3)
writer.WriteEndElement() ' close formula
writer.WriteEndElement() ' close report


'Write the XML to file and close the writer
writer.Close()

dptalt1-May-09 3:41

dptalt

1-May-09 3:41

I have a gridview control inside of a panel. The panel has scroll bars set horz and vert. I want all column headings and column text to not word wrap. If I turn off word wrap for column headers and items it still word wraps. How do I get word wrap to work?

Re: Gridview setting column widths

MidwestLimey1-May-09 4:58