Input string was not in a correct format.

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Double fine = Convert.ToDouble(txtfine.Text);

Posted 16-Dec-12 22:58pm

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[no name] 17-Dec-12 5:01am

Make sure your textbox value contains only integer or float.
or
try Double fine = Convert.ToDouble(txtfine.Text.Trim());

Tarun Mangukiya 18-Dec-12 2:41am

This error can be due to empty textbox too...

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Jibesh · Answer 1 · 2012-12-16T23:08:00

use Double.tryParse instead of Convert. class. it add better safety to the application.

Posted 16-Dec-12 23:08pm