C# Programming Help

[Zigmund.Palffy]

Hi there , Just need some help on C# programming hopefully there are some people on this forum who are programmers !

Im trying to convert Celsius to Fahrenheit and having some trouble , basically dont know how the code works, and on top of that I need to put it in a ListBox.

anyone that can help ?

F= 9/5 C + 32 this is the formula

i just need to make sure the Celsius Temperature is equivalent to Fahrenheit temperature

[uber_pwnzor]

Isn't it better to do this in Excel?

[Zigmund.Palffy]

Isn't it better to do this in Excel?

[uber_pwnzor]

So basically you need to make a program where you type in a number and it converts it?

[SkeeterHansen]

Whoa, math.

[Zigmund.Palffy]

So basically you need to make a program where you type in a number and it converts it?

[Raiun]

I'm more of a C++ guy myself, but your function should probably look a little something like this:

private void Celsius_Click(object sender, EventArgs e)


	    {


		    double dblFahrenheit;


		    double dblCelsius;


		    dblFahrenheit = double.Parse(Celsius.Text);


		    dblCelsius = (Fahrenheit - 32) * 5 / 9;


		    Fahrenheit.Text = Convert.ToString(dblFahrenheit);

	    }

I grabbed that from this link: http://www.codeproject.com/Questions/183552/C-program-converting-Fahrenheit-Celsius-Kelvin so don't give me too much credit. Hope that helps.

There's a function there to go from Fahrenheit back to Celsius, too.

[Zigmund.Palffy]

I'm more of a C++ guy myself, but your function should probably look a little something like this:

private void Celsius_Click(object sender, EventArgs e)


		{


			double dblFahrenheit;


			double dblCelsius;


			dblFahrenheit = double.Parse(Celsius.Text);


			dblCelsius = (Fahrenheit - 32) * 5 / 9;


			Fahrenheit.Text = Convert.ToString(dblFahrenheit);

		}

I grabbed that from this link: http://www.codeproje...-Celsius-Kelvin so don't give me too much credit. Hope that helps.

There's a function there to go from Fahrenheit back to Celsius, too.

[Raiun]

Okay, what it sounds like you're trying to do is be able to fill a listbox with Celsius temperatures, and then press a button and convert them all into Fahrenheit, and store the results into another listbox? Is that right?

Because if so, then the above code just needs to loop over each element in the celsius list, and put the result into the fahrenheit one. Something like this:

private void Fahrenheit_Click(object sender, EventArgs e)

			    {

					    double dblFahrenheit;

					    double dblCelsius;


	  foreach (string CelsiusValue in ListBoxCelsius.Items){


	   dlbCelsius = double.Parse(CelsiusValue);


	   dblFahrenheit = (Celsius * 9 / 5) + 32;


	   ListBoxFahrenheit.Items.Add(dblFahrenheit.ToString());

	  }

			    }

[Zigmund.Palffy]

Okay, what it sounds like you're trying to do is be able to fill a listbox with Celsius temperatures, and then press a button and convert them all into Fahrenheit, and store the results into another listbox? Is that right?

Because if so, then the above code just needs to loop over each element in the celsius list, and put the result into the fahrenheit one. Something like this:

private void Fahrenheit_Click(object sender, EventArgs e)

				{

						double dblFahrenheit;

						double dblCelsius;


	  foreach (string CelsiusValue in ListBoxCelsius.Items){


	   dlbCelsius = double.Parse(CelsiusValue);


	   dblFahrenheit = (Celsius * 9 / 5) + 32;


	   ListBoxFahrenheit.Items.Add(dblFahrenheit.ToString());

	  }

				}

[Zigmund.Palffy]

Okay guys its not working ....

[Raiun]

Okay guys its not working ....

[Zigmund.Palffy]

Could you be a bit more specific? What piece is it breaking on? Did you make sure to name your two listboxes to match the names in the code above? (or change the code to match what you named the listboxes)?

[Raiun]

okay heres what its asking for ...

it says Create an application that displays a table of the celsius temperature 0-20 and their Fahrenheit equivalents. The application should use a loop to display the temperatures in a List Box.

Not 2 list boxes only ONE list box

this is the question.

[Zigmund.Palffy]

So you don't actually have to calculate anything, only display it?

[Raiun]

There should be a function to run when the form loads. Try putting this code in there:

for (double dblCelsius = 0; dblCelsius < 20; dblCelsius++){

string outputString;

double dblFahrenheit;

dblFahrenheit = (dblCelsius * 9 / 5) + 32;



outputString = "Celsius: " + dblCelsius.ToString() + " Fahrenheit: " dblFahrenheit.ToString();

ListBoxTemperatures.Items.Add(outputString);


}

[Zigmund.Palffy]

okay i got this problem i got this error

private void calculateButton_Click(object sender, EventArgs e)

		{

			double dblFahrenheit;

			double dblCelsius;


			for (double [u]dblCelsius[/u] = 0; dblCelsius < 20; dblCelsius++)

			{

			string outputString;

			double [u]dblFahrenheit[/u];

			dblFahrenheit = (dblCelsius * 9 / 5) + 32;



			outputString = "Celsius: " + dblCelsius.ToString() + " Fahrenheit: " [u]dblFahrenheit[/u].ToString();

			ListBoxTemperatures.Items.Add(outputString);

underlines mean its errors :S

[InTheCrease]

okay i got this problem i got this error

private void calculateButton_Click(object sender, EventArgs e)

		{

			double dblFahrenheit;

			double dblCelsius;


			for (double [u]dblCelsius[/u] = 0; dblCelsius < 20; dblCelsius++)

			{

			string outputString;

			double [u]dblFahrenheit[/u];

			dblFahrenheit = (dblCelsius * 9 / 5) + 32;



			outputString = "Celsius: " + dblCelsius.ToString() + " Fahrenheit: " [u]dblFahrenheit[/u].ToString();

			ListBoxTemperatures.Items.Add(outputString);

underlines mean its errors :S

[InTheCrease]

It was the extra declarations, this works:

		double dblFahrenheit;					  

		double dblCelsius;										

		for (dblCelsius = 0; dblCelsius < 20; dblCelsius++)

		{

			string outputString;

			dblFahrenheit = (dblCelsius * 9 / 5) + 32;

			outputString = String.Format("Celsius: {0} Fahrenheit: {1}", dblCelsius.ToString(),dblFahrenheit.ToString());

			ListBoxTemperatures.Items.Add(outputString);

	 }

Cheers