Limit Numbers after Decimal on Key Press Event

Question

I am using the following code to take only digits from user and only one decimal point , that is working fine for me on KeyPress Event :

if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar) && e.KeyChar != '.')
{
    e.Handled = true;
}

if (e.KeyChar == '.' && (sender as TextBox).Text.IndexOf('.') > -1)
{
    e.Handled = true;
}

Now I want to Limit the numbers/Digits after the decimal/dot i.e 35.25468, means it take only 6 numbers/digits after the dot/decimal.

Update me !

Solution

private void price_tb_KeyPress(object sender, KeyPressEventArgs e)
        {

        if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar) && e.KeyChar != '.')
        {
            e.Handled = true;
        }

        // only allow one decimal point
        if (e.KeyChar == '.' && (sender as TextBox).Text.IndexOf('.') > -1)
        {
            e.Handled = true;
        }

        if (!char.IsControl(e.KeyChar))
        {

        TextBox textBox = (TextBox)sender;

        if (textBox.Text.IndexOf('.') > -1 &&
                 textBox.Text.Substring(textBox.Text.IndexOf('.')).Length >= 3)
        {
            e.Handled = true;
        }

        }

    }

This code will help you. It takes only one decimal place and two digit after one decimal place and you can change it accordingly.

Comments

[Mark Menchavez]

Make sure you're getting the decimal point char from NumberFormatInfo, not all cultures use '.', ie. in France, their decimal point is actually a comma