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[Resolvido] Testar caracter inserido


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Bom dia, esto a desenvolver uma aplicação para um trabalho de escola e gostaria de saber se existe alguma forma de eu testar se o valor inserido numa textbox é um número ou uma letra.

Cumps, Pedro L.

"Programming is like sex: one mistake and you're providing support for a lifetime.""A exigência conduz à excelência"

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