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erro "Input string was not in a correct format". me ajuda por favor


sabing
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Eu estou querendo armazenar um valor numa variavel o problema é que da erro

segue o codigo

    if (campo7TextBox.Text != (""))
            {
                altura = Convert.ToDouble(campo7TextBox.Text); // ele mostra esse erro em execução Input string was not in a correct format
            }
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if (double.TryParse(campo7TextBox.Text, out altura))
{
    //O valor é valido
    Console.WriteLine(altura);
}
else
{
    //O valor não é valido
    Console.WriteLine("Valor inválido!");
}

Pedro Martins

Não respondo a duvidas por PM

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