ASP.NET

Mike Ellison7-Aug-09 6:10

Mike Ellison

7-Aug-09 6:10

greendragons wrote:
Sql doesnt work on ma system

And why doesn't it work on your system?

Using Access for a web application backend is absolutely the wrong thing to do. Perhaps the only exception I could make to this is if the database and web application were packaged as a demo or tutorial with the intent of running on a single machine with a single user (like for learning purposes), and not deployed to a multi-user environment.

But if your intent is to deploy a functioning application that will be used by more than one person, solving the problem of why something like Sql Express or MySQL "doesnt work on ma system" needs to be the first step you take before going any further with your development. If it isn't, you are setting yourself up for serious problems down the road.

Feel free to post why you think you couldn't get a multi-user relational database engine running in your environment and I'll suggest help where I can.

www.MishaInTheCloud.com

greendragons7-Aug-09 7:26

7-Aug-09 7:26

Yeah ur right....before when i use to run sql xpress or my sql my windows exlporer used to crash...then i went deeper changed few setting it partially started working but still have some issues...like from where i run sql...i have 2005 installed on ma vista...it only shows 2 options configuration manager and surface manager...from where i create db and tables?? And about sqlxpress inbuilt with vs it shows me login failed even i have windows authentication....how i run mysql from configuration manager??

Arindam Sinha7-Aug-09 3:00

Arindam Sinha

7-Aug-09 3:00

I donot think it's a good design/approach you are following. You could have populated the friends in a DataTable. Then loop through each friend and verify your condition.

Let me know if you need any furhter details.

Regards,
Arindam Sinha
MyBlog - http://arindamsinha.wordpress.com/
Please give your feedback on this answer.

greendragons7-Aug-09 3:11

7-Aug-09 3:11

Sql doesnt work on my system..the condition i am trying to apply is that if somebody sends a friend reques and its not approved then in friend table the status is set to no..and if request get 10days oldr then it should be deleted so that user can again send friend request..please tell me whats wrong with my designing approach and what about my problem how i delete it..

Arindam Sinha7-Aug-09 3:30

Arindam Sinha

7-Aug-09 3:30

First point, you are using a datareader which should be used for reading the data in forward only manner.
Second point, data reader is always connected mode and you are deleting from the same table at the same time increasing the complexity unneccessaruiy.

Anyway, properly you can do the same thing.
Have a single connection. Using the same select command populate a DataSet. In that DataTable, loop through each row (each row is a friend) and fire the delete the command (here also you can use the same connection).

Keep me posted if you need any help. Smile | :)

Regards,
Arindam Sinha
MyBlog - http://arindamsinha.wordpress.com/
Please give your feedback on this answer.

Vimalsoft(Pty) Ltd7-Aug-09 3:09

7-Aug-09 3:09

I have never seen a code like this. NO NO NO NO NO No NO.

how can you declare two Connection String

How can you close the connection before you do the Delete

You Delete Statement is incorrect, before you put anything to C# make sure that you have tested it on the SQL side, that is why i prefare to use SP's than naked sql in C#, let SQL handle SQl and C# Handle C#

It seems you dont know where what should go, this is Wrong.

You need to Buy a Book and Read a little bit.

Vuyiswa Maseko,

Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.somee.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/

greendragons7-Aug-09 3:16

7-Aug-09 3:16

Ohh cnc.close() is @ last..that one is copying mistake nevrmind..but its not working..

Vimalsoft(Pty) Ltd7-Aug-09 3:18

7-Aug-09 3:18

What do you mean ? Smile | :)

greendragons7-Aug-09 3:24

7-Aug-09 3:24

I mean to say that it's actually cnc1.open() not close that was mistake during i was copying the code..i have corrected but isnt there anyway to access db using two connectiong strings as i did to select and then delete..?

Vimalsoft(Pty) Ltd7-Aug-09 3:29

7-Aug-09 3:29

So when you copied the code , it changed on fly it to close(). : Laugh | :laugh:

why do you have two connection string ? why dont you trap for exception ? i dont know how you going to debug your code Smile | :)

its complicated

greendragons7-Aug-09 3:34

7-Aug-09 3:34

I dont' have much idea about exceptions Frown | :(

but code is not complex 1st part is just checking wether the friend request in db is approved or not and selecting the unapproved ones and then it's calculating that how many days old the friend req is if more than 10 then delete that request from database this is what i want but deleting part not work..

Vimalsoft(Pty) Ltd7-Aug-09 3:38

7-Aug-09 3:38

That should have been done only in SQL not in C# , in C# you should have just called the SP and Pass the Parameters.

please this time make sure the connection does not change onfly Roll eyes | :rolleyes:

. Recopy the code and comment it by telling me what you want to do and i will give you a better way on how to do it

greendragons7-Aug-09 4:01

7-Aug-09 4:01

The code is same. I just want to select those friend request which have exceed'd limit of 10days and delete them. I saved the username who loggd in in a connection string "uname"..and retriving dates from db (coloumn name date1) and confirm is the db coloumn in which if no means friend request not accepted. In select command im retriving dates and compairing with current date if exceeds by 10 then delete that particular request from db..

Vimalsoft(Pty) Ltd7-Aug-09 4:11

7-Aug-09 4:11

I tried to rework your code and in got more confused than you Smile | :)

, now tell me is there any particular reason why you use a datareader ? again your delete statment is incorrect.

change

"Delete from friends where Username

"Delete friends where Username

greendragons7-Aug-09 4:20

7-Aug-09 4:20

Well datareader i used for select statement..and i'll try what u said "delete friends where username" instead of "delete from"..but right now im away from my system..there is one more way i was thinking 2 do..store those dates which hasto be deleted in array and close datareader connection..and then again open new connection for delete..but i want to implement it with two queries..

Vimalsoft(Pty) Ltd7-Aug-09 4:23

7-Aug-09 4:23

The Problem with your reader is holding on to the Connection. i suggest you use a datatable. atleast your code will be a little bit clearer because there wont be any looping happening. as i stated before what youdo can be done in one sql SP

greendragons7-Aug-09 4:27

7-Aug-09 4:27

I guess im getting what u trying to explain my datareader is holding up connection not passing it to other connection string..by the way what is sql sp please explain lil'..thnx

Vimalsoft(Pty) Ltd7-Aug-09 4:30

7-Aug-09 4:30

The SP i meant a Stored Procedure, i feel you could have done all this in a Stored Procedure than trying to manupilate the table in C#.

greendragons7-Aug-09 4:34

7-Aug-09 4:34

Stored procedure means storing data somewhr like array or datasets..? And how to use sp in ms access(sql doesnt work in ma system)..i wanna talk 2u online on IM..some direct queries i wanna solve plz if u dnt mind..

Vimalsoft(Pty) Ltd7-Aug-09 4:36

7-Aug-09 4:36

NO that is not a stored procedure. Make it fast because i have to go home. am on google talk and Skype with vuyiswamb

greendragons7-Aug-09 4:38

7-Aug-09 4:38

Mine is blastome on gmail and dorian_yates@yahoo.co.in..thnx but rite now im outtie home nt on system..i'll talk 2u later on IM..thnx 4 help.. Smile | :)

Vimalsoft(Pty) Ltd7-Aug-09 4:39

7-Aug-09 4:39

Cool

greendragons7-Aug-09 4:52