Learning C sharp

[dahwan]

Hey everyone! I recently moved from c++ to C# because i loved making windows applications. But i am having some problems (of course).

i made this thread to ask questions about problems i might have. My first one is about fucntions (at least its called functions in c++)

in c++ i could write a big block of code. f.eks.

void error() {
if(chances == 0) {
cout<<"You have no more chances.";
system("pause");
close();
}
else{
cout<<"The password is incorrect, please try again.";
chances --;
}
}

Now how would i create functions in C#?

[capitolc]

To my understanding, what you mean by 'functions' are called 'methods' within C#. You would write them out the same way with return type, name, and arguements, but this 'method' would be located inside a particular class.

I don't know if you use an IDE, but I use Visual Studio 2003 and when I start a new project, a skeleton structure is created for me. I can just add my own 'methods' and call them when needed. I suggest you just follow form with the skeleton code and you should be fine.

[JonnyPoet]

I think if you come from C++ and have worked with MFC you should be familiar with classes, inheritance generally talked with OOP. Then its a small change in learning the syntax and the terminology of C# as it is pretty near to C++ altered a bit into the direction od VB I would suggest you the book Visual C# Step by step which is a Microsoft press book, easy to learn. Coming from C++ you will read it like a crime thriller or whatever you like to read for fun. Things are working a bit different to C++ there are pointers but they are easier in handling then in C++.

BTW if you want to show code use codetags otherwise as you see its totally corrupted into an unreadable heap of letters, normally I called this codesausage

jonny poet

[Skoons]

Well called methods is another name of functions in OOP their main difference is that calling methods are members of a class. But you already know it if you are working with C++.
in C# you might begin with certian class like this

  class Security
  {
   ......
   void error() {
   if(chances == 0)
   {
    MessageBox.Show("You have no more chances.")//or you may use
    throw new Exception("You have no more chances.")//ofcourse you may modify exception class to your needs
     system("pause");
    close();
    }
    else{
MessageBox.Show("The password is incorrect, please try again.")
chances --;
}
}

In this example I have used winows boxes like messagebox but you may use Console.Add() to write to console
So main Idea of C# not let functions being alone they need class.
Another interesting thing that you may do next trick

  class Myclass
  {
   ...........
   //Some members
   class MyInnerClass
        {
           //another members
          }
  }

If you will have more specific questions ask and they will be answered

[Skoons]

Coming from C++ you will read it like a crime thriller or whatever you like to read for fun.

jonny poet

Yes it is

[dahwan]

Thanks for all the awesome replies ppl, but after a lot of testing, the only thing that worked was to put "static void *name*() { *code* }" in the class with the main fucntion in. i tried that loads of times, but without the "static" in front of it, and it didnt work without it.

Next question: How can i add titles and icons to messageboxes?

Next statement (=P): Here is the program i am making: MathMaker!!! If you wana know what it does, click "info" in the program :P its really cool, i promise you.

If i may say so, i think its pritty good considering i have been learning C# for yust a few days. What do you guys think?

[dahwan]

Another question:
why doesnt this code work?

using System;
using System.Windows.Forms;

namespace Test
{
	class Test
	{
		private System.ComponentModel.IContainer components = null;
		
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }
        
		private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.Text = "tomas";
        }
    }
}

Error:

<10,33>: error CS0115: 'Test.Test.Dispose(bool)': no suitable method found to override

[Traps]

Next question: How can i add titles and icons to messageboxes?

Just look at the available constructors for MessageBox.Show

MessageBox.Show((listView1.SelectedItems[0].Text + " is already established for Shadowing!"),"Add User",MessageBoxButtons.OK,MessageBoxIcon.Warning);

Here's one of mine with the text, title, ok button, and an icon

[JonnyPoet]

If i may say so, i think its pritty good considering i have been learning C# for yust a few days. What do you guys think?

Great if you have learned a lot. But Please also learn that we never accept to download and open an exe file Your program Mathmaker is an exe file included in a zip file. If you want to show us what you have learned post the source code in a zip and add it to your post. I dont see any reason why to pay for Premium services at the link which you gave or to wait for downloading. At least it was wasted time as it is an exe file.

[dahwan]

why is it a waste of time since its an exe file? cant you open them? and btw, do anyone have an msn adress or something, so i can get ansvers a litle faster? i have problems often, and writing a short program would take days with this forum.

[dcell59]

Have you ever heard the term "trojan"? How do we know your program won't start deleting files or screwing up the registry?

As for your Dispose question, you didn't derive from IDisposable.

[Traps]

why is it a waste of time since its an exe file? cant you open them? and btw, do anyone have an msn adress or something, so i can get ansvers a litle faster? i have problems often, and writing a short program would take days with this forum.

What version of c#/vs are you using? express, standard, professional, etc?

And by the way, I didnt even attempt to hover my mouse over your link.

Post some screenshots of your program instead. I know I dont want any trojans.

[dahwan]

Why should i trojan you!? i am a user at this forum yust wanting help. At the level of my skill, you should all know i am not near capable of making a trojan of any kind.

How can i show you my program if all of you is too chicken to try it? i'll post a couple of screenie's so you guys can see it.





well, what do you think? i swear to god that link is safe. yust follow it and download the program.

[dahwan]

What version of c#/vs are you using? express, standard, professional, etc?

And by the way, I didnt even attempt to hover my mouse over your link.

Post some screenshots of your program instead. I know I dont want any trojans.

I have Visual studio 2005, but i am using notepad for the codes and the SDK command prompt for compiling.
Again i promise that my link is my dahwan mathMaker program, no trojan.

[Traps]

well, what do you think? i swear to god that link is safe. yust follow it and download the program.

Umm. Its a start . Here's my first program after a few days of c#

Its a tabbed web browser, like ie7's dynamic tab's