Exception while converting String to integer in C#

Question

I get error: Format exception was unhandled, Input string was not in a correct format.
for this line:

int right = System.Convert.ToInt32(rightAngleTB.Text);

rightAngleTB is TextBox, the value Text is "25" (without the "").

I really don´t see the problem :(

Answer 1

You really should use int.TryParse. It is much easier to convert and you won't get exceptions.