Question

Ok can anyone explain why the variable offset comes back as 0?
I need to update a progress bar but the value is less than 100 so offset is the value to increase current by and then update the progress bar with the floored value of current but as it comes back 0 it’s not updating!

double offset = 0.000001;
int hmm = (image.Height * image.Width);
double current = 0;

MessageBox.Show(offset.ToString());
MessageBox.Show(hmm.ToString());
offset = 100 / hmm;// 0.01;// 100 / (image.Height * image.Width) * 10000;

MessageBox.Show(offset.ToString());

Answer 1

You’re performing integer division – both hmm and 100 are integers. Therefore if hmm is greater than 100, it will always give 0 as the result. Convert either operand to a double and it’ll use floating point arithmetic. For example:

double offset = 100.0 / hmm;