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Sadly, I have to create a COM object in C# that will be consumed by a PowerBuilder 11.5 application. Given some parameters, I need to return a byte array. I'm having trouble determining how to do this. I've tried including a ref parameter of type byte[]; no dice. I've tried declaring the parameter as "out"; again, no dice. I know the bytes I want to return are valid because I wrote them out to a file to verify. Can someone please tell me the best method to return a byte array to a calling application?
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As I am new at this, and this is my first attempt at actually writing code, some of you may chuckle (or laugh out loud at the simplistic code)... please be merciful.
I keep getting the error message: A namespace cannot directly contain members such as fields or methods"
I have visited MSDN, and virtually every google and bing hit out there, but no matter how I change the first entry, I get the same message. Could someone help?
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace _11012_debproject_2
{
class Program
{
static void Main(string[] args);
int number1;
int number2;
int Multiply;
}
Console.WriteLine( "Enter first number:" )
number1 (Console.Readline());
Console.WriteLine( "Enter second number:")
number2 ( Console.ReadLine());
product = number1 * number2;
Console.WriteLine( "product is {0}",product );
}
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Check your curly braces... they don't properly enclose the object.
Will Rogers never met me.
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Roger:
Thank you. I appreciate your help.
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace _11012_debproject_2
{
class Program
{
static void Main(string[] args);
{
int number1;
int number2;
int Multiply;
Console.WriteLine( "Enter first number:" );
number1=Convert.ToInt32(Console.Readline());
Console.WriteLine( "Enter second number:");
number2=Convert.ToIn32( Console.ReadLine());
Multiply= number1 * number2;
Console.WriteLine( "Multiply is {0} ",Multiply);
}
}
}
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Thank you for your help. I appreciate your time.
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I wanted to wander back and thank you formally. I changed "product" to "muliply" and it looks like I neglected the "convert to 32" as well as my other errors.
Thank you again.
modified 12-Jan-12 12:05pm.
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As mentioned, your } brackets are wrong and the problems starts with the ; at the end of your Main method.
namespace _11012_debproject_2
{
class Program
{
static void Main(string[] args)
{
int number1;
int number2;
int multiply;
Console.WriteLine( "Enter first number:" );
number1 (Console.Readline());
Console.WriteLine( "Enter second number:")
number2 ( Console.ReadLine());
product = number1 * number2;
Console.WriteLine( "product is {0}",product );
}
}
}
You would do well to read a bit about naming conventions. namespaces should start with a letter. Not a number of underscore.
Enjoy
"You get that on the big jobs."
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I am having difficulty posting replies.
If this is a double, I apologize. Thank you for your assistance. My namespace "name" is a bad habit I must break (from business emails with the date at the beginning of the Subject line). Thank you for the reminder.
Also, the braces? I have no excuse for the carelessness.
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Deborah Palmer McCain wrote: I am having difficulty posting replies.
Don't worry about that, Deborah. Quite a few of us have been having trouble with that for the past week or so. The site administrators are running some SQL Server scripts that are processor-intensive, and that tends to bog things down a bit. Be patient... It will get better.
Will Rogers never met me.
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Roger:
Thank you for the update, I thought that 7 was wreaking havoc with my one lonely desktop. I used Vista (no gagging) with relish for so many years, that the Apple-esque features of 7 cause me to blame it for everything. I do like Stick Notes though.
Just as an update, my application runs smoothly after I fixed further code errors
Thank you again for your help.
Deborah
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The problem (as mentioned above) is your curly braces - the last two are commented out, as is should by them being coloured green.
If you get this kind of problem, Try CTRL+K CTRL+D - it formats your code so that everything is indented nicely. It won't work when you have missing braces, but if you fix that and try it, it should be obvious in future where things are going wrong.
BTW: You can change how Visual Studio handles your indentation to your preferred style in "Tools...Options" and then "TextEditor", "C#", "Formatting", "Indentation".
So if you prefer 1TBS:
if (condition) {
statement;
statement;
}Or K&R:
if (condition)
{
statement;
statement;
}Or Whitesmiths:
if (condition)
{
statement;
statement;
}You can get it to work with it happily. (I prefer Whitesmiths)
Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water
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Thank you very much for the guidance. I will make the necessary adjustment in Visual Studio.
I appreciate you taking the time to help.
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K&R is for real programmers good sir... 
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Nah. It's clumsy and inconsistent with single statement indentation:
If you write like this:
if (condition)
statement; Why would you change the indentation when it is a block you are using instead of a single statement?
if (condition)
{
statement;
statement;
}It's up to personal preference (or company practice) though - the important thing is to be consistent throughout.
Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water
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I prefer K&R to 1TBS (devotees of both cults can be fanatics), because I think it's more readable, and more easily maintainable. WhiteSmith's I've never personally seen used at any place I've worked.
I maintain two simple macros in UltraEdit that will convert K&R<=>1TBS, if I should ever need to.
But, I think your "shibboleth" example code is a bit mis-leading: nothing stops you from using "pure" K&S and writing:
if(condition}
{
statement;
}Or even:
if (condition) { statement; }I've asked the braces directly how they feel about having only one statement, and they assure me they do not feel neglected or lonely 
I think lack of braces around one simple and short statement, following an if-clause is seldom written with braces no matter what style of formatting you use.
Where omitting the braces would really "bother" me would be when the the single statement following the if-clause was so bloody long that it overflowed the text-working-area boundaries to be several lines long !
But, of course, you are, as usual, bulls-eye-center, when you emphasize you may not have personal choice if you go to work on some project where there are code formatting guidelines in place for all team members.
Thank goodness C# does not allow multiple statements separated by colons, or "line-continuation" characters, as in the late Pleistocene when VB roamed the savannas, and real men did not eat quiche and programmed only in C and assembly language.
best, Bill
"It is the mark of an educated mind to be able to entertain a thought without accepting it." Aristotle
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Personally, I use braces round single statements, but then I grew up without auto-indenting IDEs, so it was too easy to get caught by assuming logic flow from the indentation:
if (condition)
statement;
statement; Which is one of the reasons I really dislike 1TBS: it can be far to easy to miss the opening bracket, particularly if the condition is quite long.
Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water
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I prefer
if(condition) statement;
and
if(condition){
statement;
statement;
}
Only for a limited set of statement lengths (or a long condition) will I do
if(condition_which_is_quite_long)
statement;
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Hello All,
Lately i saw people using the scrabulizer app, which "helps" you with the game wordfeud
for the ones not familiar with wordfeud .. it is based on the old fasioned "scrabble" game two players having stones with characters playing turn by turn trying to mke words on the playing board
the app recognizes the characters(bitmaps?) on your screen (the playing board is a grid)
and suggests the best word you can make
it would be a real challenge for me writing such an app on my own
it is a concept usable for all kind of cardgames mah-yong etc etc.
It would be a long term time consuming project, which can of course be split into all different modules
the module i would like to start with is making a grid on my screen
(a1 - k12 or something like that) in some of the boxes there will be playing cards. i would like to compare every box with a known set of playing cards (eg bit maps) and on every positive match i would like to return which card is in the box
eg it returns a5 - 9H if there is a nine of hearts in box a5
at this moment i have no clue on how to detect a known image anywhere on the screen, is there someone who can give me a hint on what search terms to google for?
thanks in advance
Jan-Willem
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It seems like doing image recognition is the wrong approach. It's hard and unnecessary when your program is generating the board, i.e. your program ALREADY knows which playing card is in each box.
"Microsoft -- Adding unnecessary complexity to your work since 1987!"
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Sorry for my bad expression in english
The image on the screen is not from my software
the app i want to write finds an image on the screen that is placed there by a 3rd party software (eg a cardgame)
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The fastest way to identify the image is using Bitmap.GetPixel () to distinguish the bitmaps from each other. You need to get a sample of each image, then find pixels that are different between the images.
Ideally you'll find one pixel that has a different value for every image. If there isn't one, start with the pixel that has the most different values for the different images, and make a decision tree, with branches for each unique value.
For example,
GetPixel () ----> Green
----> Red
----> Blue...
Then in each image group (branch) that has the same color, test another pixel to separate these cases:
Green ----> Light Green
----> Dark Green
----> Lime Green...
Using a program to play an online game is creative. People have been doing this in the stock market for a long time.
"Microsoft -- Adding unnecessary complexity to your work since 1987!"
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What a waste of time: to hack someone else's software screen display to allow some user to have a higher score than their own abilities can produce ! This is the software equivalent of using "loaded dice," or "a marked deck."
Liable to lead to re-runs of old movies set on riverboat casinos which involve dramatic showdown scenes
"It is the mark of an educated mind to be able to entertain a thought without accepting it." Aristotle
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Come on Peepz!!
The challange is not the cheating to get a higher score
on that case the easiest way would be finding a cheat on the net
The challenge is being able to make such a piece of software
Learning new functions and afterwards thinking "yeah i knew i could do that"
Probably it wil take much more time to create this than you ever plan to use it
but look at is as if it is a puzzle you want to solve
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