TextBox.Text Leaking Memory in WPF Application

Question

I have an application that does a large amount of number crunching on an array of numbers. I have it set to every 100,000 operations to display the status of those numbers.

Answer 1

+1 for Hans.

Also, you're using StringBuilder. Awesome.

However, you're concatenating FOUR strings for every item in arraystatus (which could be 100k for all I know) for each time your UI is updated, making StringBuilder pretty much pointless.

Try

s.Append(i.ToString());
s.Append(":\t");
s.Append(item.ToString());
s.Append(i % 8 == 0 ? "\n" : "\t"));

or, even better, try converting this to a single call of AppendFormat.