CODEWITHSUNDEEP
c#winforms
Matt Miller
Matt Miller

Reputation: 318

Code to show a string of text

I'm in my first semester of college, and we're doing C#. I have to make a Winforms app that can convert between Celsius and Fahrenheit. I have all the code down (basically), but I need to have the result output to a label. I can send the answer to the label with lblOutput = Output.ToString(); but I need a message like "[input] Celsius will is [output] Fahrenheit". I tried putting in between the brackets after "ToString" but I was getting an error.

I have everything else coded except for this. I have been looking for the last couple days to figure it out, but I can't find an answer. Any help is greatly appreciated.

Edit:

The code that I have set up appears inside of a button. I have two radio buttons that saying that the value put into a text box is either Far -> Cels or Cels -> Far.

This is what I have coded in my button. If there is any way to improve upon it, please let me know. 

private void btnConvert_Click(object sender, EventArgs e)
{
    decimal Input = Convert.ToDecimal(txtInput.Text); //grabs the input that the user entered

    if (rbtnCelsius.Checked == true) //Test to see if the Celsius radio button is checked
    {
        decimal Output = ((Input - 32) * 5) / 9; //If yes, it uses this formula to convert the input from Farenheit to Celsius
        txtOutput.Text = Output.ToString(); //Outputs the message to the user, showing the Celsius end point
    }
    else //Says that the Celsius Radio Button is not checked, meaning that the Farenheit radio button is
    {
        decimal Output = (Input * 9) / 5 + 32; //Moves onto this formula, converts Celsius to Farenheit
        txtOutput.Text = Output.ToString(); //outputs the message to the user, showing the Farenheit end point
    }

    //txtOutput.Text = Output.ToString();
    //Commented out because it gives an error saying that "Output does not exist in current context"
}

Upvotes: 0

Views: 1660

Answers (4)

Jonathan
Jonathan

Reputation: 9

I'm not sure what your question is about but if you need to format your output into a set phrase you can do this.

private void btnConvert_Click(object sender, EventArgs e)
{
    decimal Input = Convert.ToDecimal(txtInput.Text); //grabs the input that the user entered
    // declare this outside the loop so you can use it later.
    decimal output = 0M;
    if (rbtnCelsius.Checked == true) //Test to see if the Celsius radio button is checked
    {
        output= ((Input - 32) * 5) / 9; //If yes, it uses this formula to convert the input from Farenheit to Celsius

    }
    else //Says that the Celsius Radio Button is not checked, meaning that the Farenheit radio button is
    {
        output= (Input * 9) / 5 + 32; //Moves onto this formula, converts Celsius to Farenheit

    }

    txtOutput.Text =string.Format("{0} Celsius will is {1} Fahrenheit",input,output);
}`

p.s. Do remember to use a try parse method to ensure that the txtInput is definitely convertible to decimal.

Upvotes: 1

Ivan Sokalskiy
Ivan Sokalskiy

Reputation: 812

I don't know if you care about that, but for some cases you can get something like 12.243333333 by calling Output.ToString(), to make it more user-friendly, you can make it like this

Output.ToString("F2")

Which will change it to 12.24. You can use this together with string.Format like folks suggested.

Upvotes: 1

user596075
user596075

Reputation: 

int fahrenheit, celsius;
// your code to set the two variables
string yourLabelText = String.Format("{0} Celcius is {1} Fahrenheit", celsius.ToString(), fahrenheit.ToString());

yourLabel.Text = yourLabelText;

Here is a reference for String.Format(). (thanks to Lukazoid!)

Upvotes: 2

Bradley Uffner
Bradley Uffner

Reputation: 16991

you can use string.format to replace tokens like {0} or {1} in a string, or you can directly use string concatenation. I'd like to avoid directly giving you the answer since you said this is homework, but if you look for c# examples of this you should be able to find your way.

Upvotes: 0

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