i tried it. I had the namespace FYP_RFID and class name RECORDS. Type type = Type.GetType("FYP_RFID.RECORDS"); object obj = Activator.CreateInstance(type); BUT when i try to acces any member uding obj. nothing happens but when i manually make the object like RECORDS OBJ = NEW RECORDS(); THEN through obj. function i can acess the members of class. what could be the problem? (I appreciate you helping me out:) )

I made an database application using LINQTOSQL IN c#(using visual studio) I just wanted to know how many different connections at a same time can be made from different computers? (let say to a same table of database?)

I couldn't understand the tutorial.. plz just in simple explanation , tell that how can i store a class name in string format? I have a class let say ABC let say it has fields. class abc { int a; int b; } now if i want to make an object of abc in an another class, through user entering the class name , how to do using reflections? I am sure it is just 2 lines of code :)

Hi! I am making Linqtosql application in which classes are used in mapping of database. I want to let the user input the class name from interface(windows form) for e.g if Class name = hello its object declaration is e.g hello object = new hello() now in this I want the user to enter the class name "hello" i tried storing user input in a string , but doesnt work , what to do?

Thats the problem about classes . that how can i add new class file to the project and add attributes at runtime?

Hi ! I have a very odd problem. I am using LinqtoSql in my project in c#. , and what i do is i create a new table and set its column through sql server management studio express (2008 r2) , and I add a class file to the project(in visual studio) and using linq i do mapping of that table i made in Sql studio. e.g [column] public string firstname; [column] public string lname; etc etc. My question is , if i want to make a new table and add its column etc through the windows forms application in c# at runtime (using sql commands etc) , how can i use linq to automatically map the newly created table without manually editing the code? What should i do, i have to use LINQ to SQL.. PLZ HELP

thanks for you link.. But i had sql 2008 , so it had different settings. http://www.linglom.com/2009/03/28/enable-remote-connection-on-sql-server-2008-express/[^] that link was for 2008 , seems like the browser setting had problems ::) it was turned off. . but in the end it all worked out! You were a great help!, i learned many things!! Thanks for your support!

I am trying to do it from a different laptop , which is on the same network... But it gives error when i try to connect through sql express studio....... error 26 A network or instance-specific error occured while esablishing a connection to sql server..it might be not found or accesible................is there any other setting i am missing??? and how to make sure that both computers are properly connected over the network?

oh ok..i am getting it.. so my final connection string will look something like this ? server=computername\instancename ; integrated security = false ; database = "whatever" ; user id = sa ; Password=pass;

I guess i have to use one of the connection string mentioned:- someting like. Data Source=190.190.200.100,1433;Network Library=DBMSSOCN;Initial Catalog=myDataBase;User ID=myUsername;Password=myPassword; I want to know . how to know ip of one computer?? what is network library?? and i am using sql express studio 2008 r2 on both computers. So where is the keyword /sqlexpress is to be used?

HI. I am currently working on a database application. I use Sql express studio to model the database and then use LINQ in c# to access it. Whereas everything is great , the thing is that the database is on the same laptop where there is the application to access it. Let say this laptop name is "A". i use the connection string connString = @"server = .\sqlexpress;integrated security = true;database = Whatever"; (YES i am using Winodws authenciation) But if i want to access database on a different Laptop from the application running on "A", what will be the connection string?? I will connect the Both Laptops through their own WIFI.

i am recently new to database designs..i have been working on samples but never designed a sql database...please help with a tutorial or recommend a book so that i can design a database and use linq in c# to access it...by designing a database .simply meaning creating plain tables and manipulating data in it..i have sql server management studio 2008 and have visual studio 2010 ultimate also...please guide towards a simple and easy way to get started..

yeah i know it has limitations..infact i was asking in short term period working with sql server and c#...so only in that context would first learning Linq be ok?..at the moment just have to work on a simple database.

Hi there...i am recently going to start work on databases in which i will have to insert,delete,log,update,match entries.. the language in general i will use c#...my question is..what query lanquage is the easier and convinient way to do these? Ado.net or LINq....which one i should learn first ?? and which one is easy?...please guide!

i couldn't find any rfid reader at low cost, with any ither interface...the one with rs232 was the most common one..thats why i sticked to it...will try to understand the tutorial...will atch back i i encounter problems(which i definitely will! ) :) thnx

HI there!!. I have got a project in which i have to get the data of rfid card through a rfid reader connected through rs232 serial port to the computer and then further manipulate the data...i know i have to use the IO.Ports ...but the thing is i have got so many buks of c# , but whenever the chapter comes about IO.. there is nothing written about IO.ports!!...i just have to read the data from the serial port by detecting the appropriate com port to which its connected.. there are few tutorials but are in bits and pieces and is becoming real hard to understand...please help me refering to some good complete tutorial regarding this..and if you people know some c# book in which IO.Ports is explained then please tell. Thanx in advance!

@Dave Kreskowiak yes i was reffering to ado.net.. Sorry for replying late (very late :)) So can the database be operated by ado.net?? @DaveyM69 DULY NOTED!!:)

i plan on using only on a single machine.. and then communnicate the database for access of data through a server using asp.net (YES I AM DOING IT FOR FINAL PROJECT)

does anyody knows about fingerprint sdk 2009 ?? it supports many readers and supports c#..is it good enough to work with??

Hey guys!!! i wanted to know that is it possible to do interfacing with a biometric device like fingerprint recognition device with c#... I am planning of making a security system in which i will make a database (using sql) which will store and use data from the database using the input from fingerprint device and display from a gui using C# !!.. plz give me a head start!! i really need help.