Re: global variables - ASP.NET Discussion Boards

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Re: global variables

Archana New to Dotnet8-Aug-07 0:27

Archana New to Dotnet

8-Aug-07 0:27

any samples pls...

Re: global variables

Colin Angus Mackay8-Aug-07 0:34

Colin Angus Mackay

8-Aug-07 0:34

public static class MyGlobalVariables
{
    public static int someVariable;
}

NOTE: This can be an indication of poor design - You should not be thinking in terms of global variables.

What you need to do is to think of what the purpose of the variable is and find out which class it should belong to. Put it there and have the class control access to it via a property.

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Re: global variables

Archana New to Dotnet8-Aug-07 0:43

Archana New to Dotnet

8-Aug-07 0:43

thanks ..Im taking your sugesstion given in note

Re: global variables

N a v a n e e t h8-Aug-07 0:44

N a v a n e e t h

8-Aug-07 0:44

Great.

Colin Angus Mackay wrote:
have the class control access to it via a property.

I heard writing properties inside class as a bad habit ? What do you say ?

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Re: global variables

Pete O'Hanlon8-Aug-07 2:30

Pete O'Hanlon

8-Aug-07 2:30

Who told you that? Properties are not a bad habit at all - they allow you to hide the implementation of setting and retrieving values.

To a certain extent, properties are just syntactic sugar hiding the fact that these are internally functions called set_... and get_....

Deja View - the feeling that you've seen this post before.

Re: global variables

N a v a n e e t h8-Aug-07 2:37

N a v a n e e t h

8-Aug-07 2:37

Thanks, But I read some where like exposing class variables through properties is a bad habit.. Any way I always used to do that, just seen Colin's code and got doubt again...

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Re: global variables

Colin Angus Mackay8-Aug-07 9:09

Colin Angus Mackay

8-Aug-07 9:09

N a v a n e e t h wrote:
But I read some where like exposing class variables through properties is a bad habit

Actually, it is a very good habit. You may, presently, wish to allow direct access to the variables because the class doesn't care what outside entities set on the variable. But if you do that and then realise that in fact you need to fire off an event, or check the validity of the value then you can't do anything about it.

Properties are methods in reality. A property called Address will actually compile to get_Address() and set_Address(string value). So, by using properties now, even although you may not strictly need them now, saves problems later when you make the field private. You can easily add code to the method (that backs the property) because the public interface has not changed. It isn't so easy moving from public field to public property because they are not the same thing. (Even although in C# the look like the same thing)

Two blog entries of mine that might be of interest:
* Why make fields in a class private, why not just make them public?[^]
* The public fields debate again[^]

Re: global variables

N a v a n e e t h8-Aug-07 18:20

N a v a n e e t h

8-Aug-07 18:20

Thanks that was excellent

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Re: global variables

Colin Angus Mackay8-Aug-07 9:01

Colin Angus Mackay

8-Aug-07 9:01

N a v a n e e t h wrote:
I heard writing properties inside class as a bad habit ? What do you say ?

Good grief no. public fields (aka member variables) are a bad habit.

Re: global variables

Rasal doss Solomon8-Aug-07 0:58

Rasal doss Solomon

8-Aug-07 0:58

Variables can be declared as Global in the configuration file.

How to compare username and password fields given by user in login page with database and redirecting him to the next corresponding page

bhattiprolu7-Aug-07 23:57

bhattiprolu

7-Aug-07 23:57

help me with coding

Mohan

Re: How to compare username and password fields given by user in login page with database and redirecting him to the next corresponding page

Archana New to Dotnet8-Aug-07 0:32

Archana New to Dotnet

8-Aug-07 0:32

1)open an connection
2)pass your querry or stored procdure.
3)check if any value is returned
4) redirect to next page

Re: How to compare username and password fields given by user in login page with database and redirecting him to the next corresponding page

bhattiprolu8-Aug-07 0:37

bhattiprolu

8-Aug-07 0:37

thanks let me try it once

Mohan B

Re: How to compare username and password fields given by user in login page with database and redirecting him to the next corresponding page

bhattiprolu8-Aug-07 0:43

bhattiprolu

8-Aug-07 0:43

:-DThanq, i got it

Mohan

Need a watermark imaging source code in asp.net 2.0 csharp

harryforum7-Aug-07 23:43

harryforum

7-Aug-07 23:43

hi I need a watermark imaging source code in asp.net 2.0 csharp to create watermarks on images at runtime there is a watermark creator available on codeproject but that is asp.net 1.0 Can some body help please

regards
Harry

Re: Need a watermark imaging source code in asp.net 2.0 csharp

sulabh20207-Aug-07 23:51

sulabh2020

7-Aug-07 23:51

Try to google dear it seasily available on soem forum.

Hello Forum
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Re: Need a watermark imaging source code in asp.net 2.0 csharp

harryforum8-Aug-07 0:17

harryforum

8-Aug-07 0:17

hi thanks for the help i did try google but was not able to find anything useful can you send me the link if you have one

thanks
harry

Add different banner in header and footer using one admin section [modified]

srakesh7-Aug-07 23:41

srakesh

7-Aug-07 23:41

Dear Every one i am new in Dot Net i want to add different banner in header and footer using one admin section my program in asp.net and C#

Any body here to guide me in this situation

Rakesh

-- modified at 3:25 Thursday 9th August, 2007

Asp.net To Html

A.Muthunagai7-Aug-07 23:40

A.Muthunagai

7-Aug-07 23:40

I'm having DropDown list in aspx page. When I select the Drop down list,it will go to the Html page, after that it ill display it in a iframe text which is in a aspx page, after doing some edit, the edited text will be stored in a data base.
How to do that? Give me any example.

Thanks in advance

CSV + ASP.NET

shweta@syscom7-Aug-07 23:04

shweta@syscom

7-Aug-07 23:04

Hi,

I want to copy the data in a csv to sqlserver 2005 database.
Please help me in this regard.

Data in csv is in this format:
"1","Sa","New Aol","America,NY",""

Please reply asap..
Thanks a lot!!

SHWETA!!

SHWETA!!

Re: CSV + ASP.NET

Vasudevan Deepak Kumar7-Aug-07 23:05

Vasudevan Deepak Kumar

7-Aug-07 23:05

Did you try the DTS Wizard?

Vasudevan Deepak Kumar
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Re: CSV + ASP.NET

Brady Kelly7-Aug-07 23:14

Brady Kelly

7-Aug-07 23:14

That is hardly a question that belongs on the ASP.NET forum, but now that it's been asked, I'll try and answer it. Vasudevan gave you a basic answer, but there is no DTS wizard in SQL 2005. Right click the database you want to import into, then the Import/Export Wizard (slave to SSIS), will prompt you for a from data source, where you choose a flat file provider, and a to data source, where you choose your target database. It's a wizard, follow its help.

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Re: CSV + ASP.NET

Vasudevan Deepak Kumar7-Aug-07 23:25

Vasudevan Deepak Kumar

7-Aug-07 23:25