private void txtDtSaida_KeyPress(object sender, KeyPressEventArgs e) { cFuncoes.cFuncoes fn = new cFuncoes.cFuncoes(); if (e.KeyChar != '\b') { if (Char.IsNumber(e.KeyChar)) { fn.FormataCampos(cFuncoes.cFuncoes.OpcaoFormata.ForData, this.txtDtSaida); } else { e.Handled = true; } } }