473,395 Members | 1,442 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,395 software developers and data experts.

simple C# question

what is the equivalent in C# to VB's Is Nothing? Check out
the following code snippet:

private SqlConnection objConn;

if (objConn Is Nothing) {
objConn = new SqlConnection(strConnection);
}

I'm converting my coded from vb to C# and I want to
replace objConn Is Nothing with the C# equivalent? I
trried == NULL, but C# doesn't know NULL. Thanks
Nov 17 '05 #1
2 910
"Will" <ws*****@comcast.net> wrote in
news:08****************************@phx.gbl:
what is the equivalent in C# to VB's Is Nothing? Check out
the following code snippet:

private SqlConnection objConn;

if (objConn Is Nothing) {
objConn = new SqlConnection(strConnection);
}

I'm converting my coded from vb to C# and I want to
replace objConn Is Nothing with the C# equivalent? I
trried == NULL, but C# doesn't know NULL. Thanks


Will,

C# is case sensitive. null is all lowercase letters:

if (objConn == null) {
objConn = new SqlConnection(strConnection);
}

Hope this helps.

Chris.
-------------
C.R. Timmons Consulting, Inc.
http://www.crtimmonsinc.com/
Nov 17 '05 #2
C# uses null (all lowercase). But if you don't initialize a variable it's
going to have an undefined value, make sure you set objConn before you check
it for null (such as in a constructor). If it's an instance variable then it
is going to have a default value but it's better not to rely on that and
always set your variables before using them.

Jerry

"Will" <ws*****@comcast.net> wrote in message
news:08****************************@phx.gbl...
what is the equivalent in C# to VB's Is Nothing? Check out
the following code snippet:

private SqlConnection objConn;

if (objConn Is Nothing) {
objConn = new SqlConnection(strConnection);
}

I'm converting my coded from vb to C# and I want to
replace objConn Is Nothing with the C# equivalent? I
trried == NULL, but C# doesn't know NULL. Thanks

Nov 17 '05 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

3
by: Patchwork | last post by:
Hi Everyone, Please take a look at the following (simple and fun) program: //////////////////////////////////////////////////////////////////////////// ///////////// // Monster Munch, example...
1
by: Proteus | last post by:
Any help appreciated on a small perl project I need to write for educator/teaching purposes. I have not programmed perl for some time, need to get up to speed, maybe some kind souls hrere will help...
2
by: Raskolnikow | last post by:
Hi! I have a very simple problem with itoa() or the localtime(...). Sorry, if it is too simple, I don't have a proper example. Please have a look at the comments. struct tm *systime; time_t...
3
by: Peter | last post by:
Hello Thanks for reviewing my question. I would like to know how can I programmatically select a node Thanks in Advanc Peter
7
by: abcd | last post by:
I am trying to set up client machine and investigatging which .net components are missing to run aspx page. I have a simple aspx page which just has "hello world" printed.... When I request...
4
by: dba_222 | last post by:
Dear Experts, Ok, I hate to ask such a seemingly dumb question, but I've already spent far too much time on this. More that I would care to admit. In Sql server, how do I simply change a...
14
by: Giancarlo Berenz | last post by:
Hi: Recently i write this code: class Simple { private: int value; public: int GiveMeARandom(void);
30
by: galiorenye | last post by:
Hi, Given this code: A** ppA = new A*; A *pA = NULL; for(int i = 0; i < 10; ++i) { pA = ppA; //do something with pA
10
by: Phillip Taylor | last post by:
Hi guys, I'm looking to develop a simple web service in VB.NET but I'm having some trivial issues. In Visual Studio I create a web services project and change the asmx.vb file to this: Imports...
17
by: Chris M. Thomasson | last post by:
I use the following technique in all of my C++ projects; here is the example code with error checking omitted for brevity: _________________________________________________________________ /*...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
by: ryjfgjl | last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.