Cannot implicitly convert type 'object' to 'string'. An explicit conversion exists (are you missing a cast?)

JouSVK

Zdravim, robim jednoduchu aplikaciu, ktora zo suboru version.txt precita int (v mojom pripade cislo 1) a porovna hodnotu z label1.Content(text), v mojom pripade tiez 1.
Taktiez som skusal, ked bola premenna number int,
Skusal som podla googlu pridat .Tostring
Cannot implicitly convert type 'object' to 'string'. An explicit conversion exists (are you missing a cast?)

Cannot implicitly convert type 'object' to 'string'. An explicit conversion exists (are you missing a cast?)

Nechcem hotovy kod, staci nejake vysvetlenie, dakujem moc <3

focko

v if ma byt porovnanie, to je ==
= je priradenie
a pokial si dobre pamatam, tak label ma vlastnost text => label1.Text
neviem odkial mas content

JouSVK

XAML aplikacia ma content, + diky

focko

a ToString je funkcia

JouSVK

Mozem este poprosit? Label1 ma text 1, versions.txt je tiez 1, i tak stale robi, ako keby boli rozdielne hodnoty

Kód:

           InitializeComponent();
            wb.DownloadFileAsync(version, "version.txt");
            System.IO.StreamReader file = new System.IO.StreamReader("version.txt");
            number = file.ReadLine();
            if (number == versionnumber.Content)            
            {
                MessageBox.Show("Ready");
            }
            else
            {
                MessageBox.Show("update");
            }

focko

Nenacitavas zo suboru aj koniec riadka? Na stringu volaj Trim()

JouSVK

An exception of type 'System.NullReferenceException' occurred in nng.exe but was not handled in user code

Additional information: Object reference not set to an instance of an object.

Kód:

number = number.Trim();

focko

Tak potom nic nenacitalo, mas subor tam kde program?

JouSVK

ano mam, este ma napadlo zmazat medzery manualne, ziadne tam nie su

// Spojený príspevok 30.08.2017 14:41

Possible unintended reference comparison; to get a value comparison, cast the right hand side to type 'string'
toto je pravdepodobne kde je chyba

focko

tak pretypuj

Cannot implicitly convert type 'object' to 'string'. An explicit conversion exists (are you missing a cast?)

Cannot implicitly convert type 'object' to 'string'. An explicit conversion exists (are you missing a cast?)

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