Re: Inheritance - C# Discussion Boards

papyrus_lei27-Jul-05 23:13

27-Jul-05 23:13

when i use procedure
CommandType is procedure
and then run ExecuteNonQuery()
the return value of ExecuteNonQuery() is always -1

so the return value of ExecuteNonQuery is useless when use procedure?

Re: About ExecuteNonQuery ?

cshaaaa28-Jul-05 0:13

cshaaaa

28-Jul-05 0:13

It executes the query and just return the no of rows affected. Laugh | :laugh:

Re: About ExecuteNonQuery ?

papyrus_lei28-Jul-05 3:04

papyrus_lei

28-Jul-05 3:04

thanks!

Re: About ExecuteNonQuery ?

Anish Gopi28-Jul-05 2:48

Anish Gopi

28-Jul-05 2:48

Hai

For UPDATE, INSERT, and DELETE statements, the return value is the number of rows affected by the command. For all other types of statements, the return value is -1. If a rollback occurs, the return value is also -1.

For more information See

SqlCommand.ExecuteNonQuery Method[^]

Re: About ExecuteNonQuery ?

papyrus_lei28-Jul-05 3:05

papyrus_lei

28-Jul-05 3:05

thanks! ^_^

Re: About ExecuteNonQuery ?

Anonymous28-Jul-05 2:49

Anonymous

28-Jul-05 2:49

the procedure execute correctly and the data in DB changed.
but the return value is -1
why?
return value just useful when execute sql query?

Inheritance

zapap27-Jul-05 21:09

zapap

27-Jul-05 21:09

I have a parent class, Base with 2 child classes, Child1, and Child2.
Base has a public int iNo. I init Child1 from another class. So Child1 inits Base.
Now, in Child1, I set Base.iNo = 10. Then i create the second child class, Child2 from Child1. Now, in Child2, when I call Base.iNo, i don't get 10.

I know the problem is that the child classes works with 2 seperate instances of the Base class, but how can i resolve this.

i want both child classes to inherit from the same Base instance. How do i do this.?

Thank you

There's someone in my head but it's not me - Pink Floyd
gunigugu

Re: Inheritance

Guffa28-Jul-05 0:14

Guffa

28-Jul-05 0:14

You inherit a class, not an object. Child1 and Child2 only inherits the definition of Base, Child1 objects and Child2 objects still are separeate objects. It's the same way as if you have two separate Base objects, they each have there own set of members, although they come from the same class.

If you want to share a member across objects, you have to declare it as static.

---
b { font-weight: normal; }

Re: Inheritance

zapap28-Jul-05 8:51

zapap

28-Jul-05 8:51

Thank you very much, I never thought of static variables...

There is someone in my head but it's not me - Pink Floyd

Optimizing a C# for size

Luis Alonso Ramos27-Jul-05 20:08

Luis Alonso Ramos

27-Jul-05 20:08

I have a C# Windows Forms application, where the executable really has to be small. It has about 5 or 6 forms, and the executable size is about 230 KB. By toggling the show all files in the Solution Explorer in Visual Studio, I can change the Build Action from Embedded Resource to None for the .resx files generated by the designer. With this, I shrank the EXE size to 100 KB.

My forms are not Localizable, and I haven't included any graphic files directly. The ImageLists I use are loaded from a bitmap strip with code, and not in the designer.

My code as it is doesn't break without the .resx files, but I wonder if there are other situations where they are used that I'm not aware of.

So, does anyone know?

-- LuisR

Luis Alonso Ramos
Intelectix - Chihuahua, Mexico

Not much here: My CP Blog!

How to create a file in remote system

Vinkum27-Jul-05 19:51

Vinkum

27-Jul-05 19:51

Hi,

I want to create a Textfile in the remote system meaning(i'm having only the URL, where the file to be created e.g: http://url/folder ). Inside the folder i want to create a file. Is there any classes to create a file in remote system? And is it possible to make the file as hidden file. If anybody knows solution to my problem please let me know to solve it.

Thanks and Regards,
Vinoth

Using gamepad in C#?

BlackWorm27-Jul-05 18:33

BlackWorm

27-Jul-05 18:33

I want to control gamepad in C# but i don't know how! Frown | :(

Using directinput?
or else?

is anyone have any sourcecode about this?
please help me!

sorry because of my poor English

Re: Using gamepad in C#?

Christian Graus27-Jul-05 19:07

Christian Graus

27-Jul-05 19:07

DirectInput is what you need to use.

Christian Graus - Microsoft MVP - C++

Re: Using gamepad in C#?

BlackWorm27-Jul-05 21:31

BlackWorm

27-Jul-05 21:31

thanks for your reply
But can tell me more detail?
i don't know how to use directinput in C# to control gamepad
thanks;)

Re: Using gamepad in C#?

Christian Graus28-Jul-05 15:10

Christian Graus

28-Jul-05 15:10

Download, install and read the docs for the DirectX SDK. It has sample code.

Christian Graus - Microsoft MVP - C++

Re: Using gamepad in C#?

mav.northwind28-Jul-05 20:24

mav.northwind

28-Jul-05 20:24

Instead of the quite bulky DirectInput you can simply P/invoke the joy* functions. I've done this to support a footswitch that's behaving like a joystick and it works well.

THis MSDN article[^] might help you.

Regards,
mav

Re: Using gamepad in C#?

BlackWorm30-Jul-05 16:48

BlackWorm

30-Jul-05 16:48

i did it!

Really Really thanks,

c# dll conversion

ppp00127-Jul-05 17:00

ppp001

27-Jul-05 17:00

Hi,

Are there any tools(commercial or free) to convert c#
runtime intermediate output to those non-runtime intermediate
language exe so that user cant re-engineering the exe easily ?

thanks

Re: c# dll conversion

Vasudevan Deepak Kumar27-Jul-05 17:05

Vasudevan Deepak Kumar

27-Jul-05 17:05

Maple:

I think Obfuscators can help you out. VS.NET 2003 also has an Obfuscator called 'Dotfuscator Community Edition 2003'.

That should help you out. Is'nt it?

Deepak Kumar Vasudevan
Personal Web: http://vdeepakkumar.netfirms.com/
I Blog At: http://deepak.blogdrive.com/

Re: c# dll conversion

Christian Graus27-Jul-05 17:06

Christian Graus

27-Jul-05 17:06

They don't really help that much, and htey sure don't do what he's hoping for.

Christian Graus - Microsoft MVP - C++

Re: c# dll conversion

Christian Graus27-Jul-05 17:06

Christian Graus

27-Jul-05 17:06

No, there are no tools to do this that I know of. You can run ngen, but it has to be run on the target machine, so unless you're distributing the dll by hand....

The best you can do is obsfucate your code with one of the obsfucators out there.

Christian Graus - Microsoft MVP - C++

Crystal reports -pushed data does not show

Reanalyse27-Jul-05 16:47

Reanalyse

27-Jul-05 16:47

This is driving me mad, two almost identical code segments, one works the other does not.

Trying to push data to a Crystal Report
The code is
______________________________________________________________________________

private void accessrpt_Load(object sender, System.EventArgs e)<br />
{<br />
//pass the dataset to the report<br />
rpt_log rpt1=new rpt_log();<br />
<br />
sqlstring="SELECT STATUS, SITE, START_OF_ROAD, DEPARTED, ARRIVED,    END_OF_ROAD, NAME, REASON, ACTION, COMPANY, ROAD_CHECK_REQUIRED, COMMENTS, SITE FROM ARADMIN.TCC_SITE_ARRIVAL_LOG WHERE (NAME = '"+Class1.strVariable +"')";<br />
System.Data.OracleClient.OracleConnection oconn= new System.Data.OracleClient.OracleConnection("user id=hidden;datasource=oracle1;password=hidden");<br />
		<br />
System.Data.OracleClient.OracleDataAdapter oda= new System.Data.OracleClient.OracleDataAdapter(sqlstring,oconn);<br />
<br />
oda.Fill(tcc_log1);<br />
tcc_log1.WriteXml("c:\\datadump.xml");<br />
<br />
rpt1.SetDataSource(tcc_log1);<br />
log_rep.ReportSource=rpt1;<br />
}<br />

______________________________________________________________________________
I know the dataset is correct - the XML dump is exacly what the SQL requests.
But cystal reports pointing to the same dataset (as on the last two lines of the sample above) shows the correct headings, gives no error messages but shows no data.

Can anybody suggest where I am going wrong ?
Thanks

Re: Crystal reports -pushed data does not show

Reanalyse28-Jul-05 15:33

Reanalyse

28-Jul-05 15:33

Solved the problem (oh for good error trapping reports)
I needed to apps the table as well as the datatest to Crystal reports

i.e. rpt1.SetDataSource(tcc_log1.Tables[1])not what was used.

wat does this error mean?

nidhelp27-Jul-05 16:01

nidhelp

27-Jul-05 16:01

wat does this mean >> Type or namespace definition, or end-of-file expected

can someone advise me wat to do..

Re: Type or namespace definition, or end-of-file expected

Dave Kreskowiak27-Jul-05 16:48

Dave Kreskowiak

27-Jul-05 16:48

My first guess would be that you don't have your { and } braces paired up properly. One of them is probably missing somewhere.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

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