exceptions causing junk information twine (c#)

ok, uncanny one. junk information isn't futile either, appears substrings executable itself.

private vacant form1_load(object sender, eventargs e)
{
    twine s = getvalue();
    // during point, s == "400". since isn't unequivocally applicable (dumbed down test)
    (s != "18446744073709551615") 
        pitch new exception();
        // difference thrown though, twine set random
        // information inside executable.
}

this seems dependant certain clearly considerate doing sum getvalue() such calls string.format() being opposite places.

has anyone ever run something identical have any ideas competence means this?