How to Make a Calculator in C# Windows Form Application Part-1

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[Eincrou]

A small tip that might help others: when the button_click event handler needs to be copied to the rest of the number keys' Click event, you can Ctrl+LeftClick on each button in the form designer.  By selecting multiple buttons at a time, you can add button_click into the Click event in the Properties window and it applies to _all_ of the buttons you had selected.

[adrianv.]

Super clear and easy to follow! Thanks for helping million studends around the world!

[anupamadhermal]

I m a BCA student.And, due to covid we got no practical sessions 🙄. (*lokdwn, reporting cases @clg, then closing for a week and so ). When exams hit, I was in a panic..I studied through your video.This video was awesome, superb, lifesaver😂👌😭
Thank you❤️

[totteold]

Tip: Instead of clicking through all buttons to add click operators, you can shift or drag select all the buttons and add "button_click" or "click_operator". Make sure you mark the correct buttons for the right operator tough.

[SandraManssson]

Thanks to you I can do my homework for school. :-) I was afraid I couldn't do that because it seems so difficult but now I can see no problem. I like it. So thank you !

[youpattube]

Very informative. Thank you. I like your teaching style ; patient and un-hurried.

[Eincrou]

Thanks for this app walkthrough.  I have very limited formal instruction in programming (from 12 years ago) and I'm trying to teach myself C# from textbooks.  It's nice to have a guided exercise to practice with.  I try to see if I know what needs to be done before you mention it.

[XpertPilotFSX]

16:33 - could you please explain that to me again? I dont really understand the syntax and what it means.

[spbs-thkw]

Informative tutorial !
but i m facing problem when i was run my project, i click any no like 0, 2 so on then show me as an output on textbox "System.Windows.Forms.TextBox, Text: 00 "


give guidance plz...

[JimVincitore]

Cool app. i taught college computer programming various languages off and on for about twenty years. I used this calculator app as the final for introductory courses! It's just amazing what you can do in the Properties pane these days! Great job!

[AHSArnulf]

the code is completely different when i click the buttons to perform the button click event. Its not similar at all it says private sub instead of void and has 10 lines of code before the click event. Besides that when i do the Button button = (sender) etc it says its not valid...

[logicaltroller]

can any one help me out from taking data from one textfield in java and add it for example i want to add many values textfield1(2+2+2+4) and result shows in other field

[kiranam]

is this tutorial using an OOP concept?

[kelvinmama]

After clicking the windows form application on VSCode, the box is not what loading but the code instead. Pls can u help me with that

[harshidjethwa]

perfect but need explaination for your codes

[ARATHINIBIN.]

Hi..what if I need to perform multiple calculations in a stretch?for example 3+2+4×2..how can this be performed..pls reply..

[booboobeni]

Thank You. I was able to get my assignment done before class.

[ketovix]

What app are you using to make the calculator...

[kriswingateshellsing]

you forgot something bro .. the DOT have to have a line for itself because if i do as you say i wouldnt be able to input 0.1 .. cuz the 0 gets cleared

it should be like this

namespace CALC
{
public partial class ACCCALC : Form
{
public ACCCALC()
{
InitializeComponent();
}

private void Button_Click(object sender, EventArgs e)
{
if (ResultBox.Text == "0")
ResultBox.Clear();

Button button = (Button)sender;
ResultBox.Text = ResultBox.Text + button.Text;

}

private void Button_ClickDot(object sender, EventArgs e)
{
ResultBox.Text = ResultBox.Text + ".";
}

}
}

[gardencityplastererslimite]

System.ArgumentException: 'Delegate to an instance method cannot have null 'this'.'




please can you help me why this is coming up when i run it