Detect decimal separator

问题:

I have to detect decimal separator in current windows setting. Im using visual studio 2010, windows form. In particular, if DecimalSeparator is comma, if user input dot in textbox1, I need show zero in textbox2.

I tryed with this code, but not works:

private void tbxDaConvertire_KeyPress(object sender, KeyPressEventArgs e)
    {
        string uiSep = CultureInfo.CurrentUICulture.NumberFormat.NumberDecimalSeparator;
        if (uiSep.Equals(","))
        {
            while (e.KeyChar == (char)46)
            {
                tbxConvertito.Text = "0";
            }
        } 
    }

I have tryed also this code, but not work:

private void tbxDaConvertire_KeyPress(object sender, KeyPressEventArgs e)
    {
        string uiSep = CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator;
        if (uiSep.Equals(","))
        {
            if (e.KeyChar == (char)46)
            {
                tbxConvertito.Text = "0";
            }
        } 
    }

回答1:

Solution:

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
    {
        char a = Convert.ToChar(Thread.CurrentThread.CurrentCulture.NumberFormat.NumberDecimalSeparator);
        if (e.KeyChar == a)
        {
            e.Handled = true;
            textBox1.Text = "0";
        }
    }

Hopes that helps. That way, when you hit "." or "," you will have your textbox in 0

EDIT:

If you want to insert a 0 everytime you hit the decimal separator, this is the code:

char a = Convert.ToChar(CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator);
        if (e.KeyChar == a)
        {
            e.KeyChar = '0';
        }

回答2:

Actually you should be using

Thread.CurrentThread.CurrentCulture.NumberFormat.NumberDecimalSeparator

instead of

CultureInfo.CurrentUICulture.NumberFormat.NumberDecimalSeparator

Using the second one gives you the OS default settings, which might be different then user Regional Locales for particular user account logged to this PC

回答3:

You shouldn't use a while loop, I think it will freeze the application, use if instead, the problem might be here