问Currency TextBox仅在通用商店应用程序中接受数字

EN

 private void textBox_TextChanged(object sender, TextChangedEventArgs e)
    {
        // Do not apply if textbox is empty - needed to avoid exceptions
        if (textBox.Text.Length == 0) { return; }
        decimal charInput;
        string value = textBox.Text.Replace(",", "").Replace(".", "").TrimStart('0');                       
        // Make sure to only accept numbers as input          
        if (decimal.TryParse(value, out charInput))
        {
            charInput /= 100;
            //Unsub the event so we don't enter a loop
            textBox.TextChanged -= textBox_TextChanged;
            //Format numbers as currency
            textBox.Text = string.Format(new System.Globalization.CultureInfo("en-US"), "{0:N}", charInput);
            textBox.TextChanged += textBox_TextChanged;
            textBox.Select(textBox.Text.Length, 0);
        }
        else {
            // Remove last character if NOT a number
            textBox.Text = textBox.Text.Remove((textBox.Text.Length - 1));
            // force cursor to the end of text to avoid random movements                
            textBox.SelectionStart = textBox.Text.Length;
        }
 }