How do i divide a string or int in c# WinForms?

Question

I am trying to get a value of trackbar / slider, divide it by 100 and display the value in label.

I get an error Operator '/' cannot be applied to operands of type 'int' and 'string'.

Here's my try:

private void siticoneTrackBar1_Scroll(object sender, ScrollEventArgs e)
{
    label6.Text = siticoneTrackBar1.Value / 100.ToString();
}

Can anyone help?

Put parantheses arround your math expression and then call ToString on that. — Ralf, Feb 06 '23 at 15:38
You cannot divide an int by a string, try (value / 100).ToString(), so you cast the result to a string after the maths — Steven Wood, Feb 06 '23 at 15:39
Also keep in mind _integer division_ is different than floating point division. — gunr2171, Feb 06 '23 at 15:41

score 3 · Answer 1 · answered Feb 06 '23 at 15:39

The problem is operator precedence here: you're trying to divide the value of siticoneTrackBar1.Value by the result of calling 100.ToString(). Instead, I strongly suspect you intended to perform the division of the two numbers, then call ToString on the result. The "dot" operator has higher precedence than division, so you need to use brackets to tell the compiler what to do:

private void siticoneTrackBar1_Scroll(object sender, ScrollEventArgs e)
{
    label6.Text = (siticoneTrackBar1.Value / 100).ToString();
}

How do i divide a string or int in c# WinForms?

1 Answers1