I have a problem, in an app the user types the CPF, but only the numbers because it is very complicated to create a mask in Windows Phone, and that CPF will be 'drawn' in an image of a card, and to be more pleasant I need to draw it with its normal format with dots and dash. So how do I transform a string:
xxxxxxxxxxx
In:
xxx.xxx.xxx-xx
I do not know about windows phone, but in pure C # it would look like this:
public string teste(string cpf)
{
return Convert.ToUInt64(cpf).ToString(@"000\.000\.000\-00");
}
private void txtCNPJ_KeyPress(object sender, KeyPressEventArgs e)
{
ComboBox t = sender as ComboBox; // ou text Box
if (e.KeyChar >= 48 && e.KeyChar <= 57)
{
t.SelectionStart = t.Text.Length + 1;
if (t.Text.Length == 2 || t.Text.Length == 6)
t.Text += ".";
else if (t.Text.Length == 10)
t.Text += "/";
else if (t.Text.Length == 15)
t.Text += "-";
t.SelectionStart = t.Text.Length + 1;
}
}