NewStats: 3,263,805 , 8,181,456 topics. Date: Sunday, 08 June 2025 at 01:28 AM 4z1e8

Before starting this thread i thought on how i could help student beginner programmers like me learn the c#.net and probably collaborate
on projects

Before starting this tutorial sections,

i'd advise that you visual c#.net express from http://www.microsoft.com

Also,i would add some screen shots of completed codes so you can relatively compare with the ones you done
This series of tutorial would be mostly based on mini projects,so sit down relax and sip some coffee while we delve into a world c#.Net

We are going to start our first series of tutorial by creating a simple calculator that can add,subtract,multiply and divide an input of
am going to be using the visual studio 2010 or visual studio 2012 during the course of this project.
i would the screen shot of the completed code.

Feel free to ask me questions concerning the particular project we are currently working on.
Questions that are irrelevant would be over-looked.

Grabs first chair, dusts and balance.

OP, i dey greet

Yes purely op..so sit back and relax while i work around the visual studio to give the best explanation in the most simplest way as possible

Lets establish some concepts on the following listed below before we get started

1.variable : we would be using a lot of variables as we advance in this course.
variables are temporary memory locations
using a simple analogy, likening a box to a variable. We say that the box is empty if it doesn't contain anything,so it is for a varaible
In c# variables are declared in this format

Datatype variablename;
that brings us to defining what a datatype means
in c#.net we have various datatypes such as the integer,decimal,bool,double,string e.t.c are among the most commonly used datatypes
are listed below

the integer is used for whole numbers
decimal for decimal numbers
bool : true or false values
string : used to store a series of text values


a proper representation of declaring a variable in c#.net would be

1.Storing an integer number
int number=1;
2.Storing a decimal number
decimal number=2.3;
3.Storing a Boolean value
decimal val=True;
4.Storing a string Value
string message="Hello world";

As we progress further,you would understand its various features..

If i may ask whats the meaning of op? i initially thought you were referring to oop!!

Segibambo: If i may ask whats the meaning of op? i initially thought you were referring to oop!!

original poster, as in the thread opener

@ segibambo
Hi. Please i have a project to do in C#.
Can u pls be of help to me?

Thanks.

gadafi101: @ segibambo
Hi. Please i have a project to do in C#.
Can u pls be of help to me?

Thanks.

What is the 411 of the project

The first batch of codes and images would be coming up between 4:30-5:00pm....Please stay updated!!

I'd also like you guys to note that i'd be using visual studio 2012 during the course of this tutorial

Please continue, am following...

Following. Please Continue.

Segibambo: Lets establish some concepts on the following listed below before we get started

1.variable : we would be using a lot of variables as we advance in this course.
variables are temporary memory locations
using a simple analogy, likening a box to a variable. We say that the box is empty if it doesn't contain anything,so it is for a varaible
In c# variables are declared in this format

Datatype variablename;
that brings us to defining what a datatype means
in c#.net we have various datatypes such as the integer,decimal,bool,double,string e.t.c are among the most commonly used datatypes
are listed below

the integer is used for whole numbers
decimal for decimal numbers
bool : true or false values
string : used to store a series of text values


a proper representation of declaring a variable in c#.net would be

1.Storing an integer number
int number=1;
2.Storing a decimal number
decimal number=2.3;
3.Storing a Boolean value
decimal val=True;
4.Storing a string Value
string message="Hello world";

As we progress further,you would understand its various features..

Is this a mistake or it is how it really is

Cos language influenced by C++ uses Boolean or boolean



Please change it to bool

dsypha:

Is this a mistake or it is how it really is

Cos language influenced by C++ uses Boolean or boolean



Please change it to bool

dsypha:

Is this a mistake or it is how it really is

Cos language influenced by C++ uses Boolean or boolean



Please change it to bool

its a mistake, thought i read through this thing very well....Thanks for the correction.

1.Create a new windows form application project
2.Click on your newly added form and navigate to the properties windows
change the name property from form1 to frmsimpleCalculator
change the text property to simple calculator

--Add five buttons,three labels and two textboxes on your form as seen in the screen shots and be sure to
realign your controls for best fit

--Now rename your controls at the property window as seen from the screen shots
The first textbox should be named Txtfirstnumber
The second textbox Txtsecondnumber

--set the propertyname of the "+" button to btnplus
the propertyname of the "-" button to btnsub
the propertyname of the "*" button to btnmul
the propertyname of the "/" button to btndiv
set the name property of the label beside the "Check ans" button to lblanswer
and its text property to "Ans would be displayed here"
the name property of the first textbox to Txtfirstnum
the name property of the second textbox to TxtSecondNum


Step 2

Please make sure you pay more attention to this section as this is the main part of programming

if you double click on your form you should see the following below
The "//" symbol serve as comment, so am gonna be using it so asto explain the code areas

[[[[


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing; " The using part are name spaces in the .net framework.the are prewrittenclasses"
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Simple_Calculator
{
public partial class frmsimpleCalculator : Form
{
//In this area,we are going to define two global variables that we going to use throughout the code



public frmsimpleCalculator()
{
InitializeComponent();
}
}
}






]]]]

Form before naming

named form

Codes before and after

contents of the text files are as follows (if you don't feel like ing it


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Simple_Calculator
{
public partial class frmsimpleCalculator : Form
{
double num1;
double num2;
double ans;
public frmsimpleCalculator()
{
InitializeComponent();
}

private void LblAnswer_Click(object sender, EventArgs e)
{

}

private void btnplus_Click(object sender, EventArgs e)
{
num1 = Convert.ToDouble(Txtfirstnum.Text);
num2 = Convert.ToDouble(TxtSecondNum.Text);
ans = num1 + num2;

LblAnswer.Text = "";
LblAnswer.Text = Convert.ToString(ans);

}

private void btnsub_Click(object sender, EventArgs e)
{
num1 = Convert.ToDouble(Txtfirstnum.Text);
num2 = Convert.ToDouble(TxtSecondNum.Text);
ans = num1 - num2;

LblAnswer.Text = "";
LblAnswer.Text = Convert.ToString(ans);
}

private void btnmul_Click(object sender, EventArgs e)
{
num1 = Convert.ToDouble(Txtfirstnum.Text);
num2 = Convert.ToDouble(TxtSecondNum.Text);
ans = num1 * num2;

LblAnswer.Text = "";
LblAnswer.Text = Convert.ToString(ans);
}

private void btndiv_Click(object sender, EventArgs e)
{
num1 = Convert.ToDouble(Txtfirstnum.Text);
num2 = Convert.ToDouble(TxtSecondNum.Text);
ans = num1 / num2;

LblAnswer.Text = "";
LblAnswer.Text = Convert.ToString(ans);
}

private void btnCheckAns_Click(object sender, EventArgs e)
{
LblAnswer.Enabled = true;
}
}
}

I am open to questions



If you have any problems, do ask




On Tuesday next-week we would treat validation of input entry for this simple calculator project

Funny thing is am supposed to recover C# and the Whole .NET for a First Bank Test ? been a while i touched .NET

pc guru: Funny thing is am supposed to recover C# and the Whole .NET for a First Bank Test ? been a while i touched .NET

what are the probable contents of the test?

@segibambo

Im to do a vehicle service system using C# and mysql and the system must generate a report.

Thanks.

Pls can u help me?

Windows Service
Background Service (I think it still means Window Service)
C#
VB.NEt (Who the f.u.ck uses this)
ASP.NET Classic
SQL Server


to be frank it seems they are still on some old version on .NET though i will cover what i can, but hoping to get as much from here too as in Business Case Scenarios

[color=#000099][/color]hello people,please i need help with multi threading in java,thank you.

Its been a while i posted here

Hope you guys are not annoyed, i have been quite busy doing some learning myself and also because i format my system and didn't copy a database i created, i'v been busy creating it from scratch with all the stored procedures and ish

so getting off from where we stopped on creating a simple calculator, i would like to give an outline of four topics we would follow for the next two weeks, i would be using visual studio 2010 this time,

please stay tuned and , never stop learning and relearning.

pc guru: Windows Service
Background Service (I think it still means Window Service)
C#
VB.NEt (Who the f.u.ck uses this)
ASP.NET Classic
SQL Server


to be frank it seems they are still on some old version on .NET though i will cover what i can, but hoping to get as much from here too as in Business Case Scenarios

taken the test?

Not yet haven't been called, but for now am Learning WPF for a mini project for creches, tired of using web applications.

phewwww

flys back from church...
gets ma laptop, get a chair, dust it.. moves to d front seat....


oya oga lets go there...

calculator abi!
nd other softwares with c#,
this thread should be called "team c#"

Following...

@Segibambo, thank u for this thread. i have been looking for where to learn this language. i just stumbled on this.

i am ing this thread from today