title: How do I set the keyboard as a numeric keypad and can I enter a negative number in Xamarin.Forms?
body: <p>The demand is to display the default number of the keyboard can enter a negative number like this:</p>
  
  <p><a href="https://i.stack.imgur.com/JHRgA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JHRgA.png" alt="enter image description here"></a></p>
  
  <p>But there is no way to set the default for this way.</p>
  
  <p>If you set this keyboard, you can not enter a negative number, click the minus sign is not responding.</p>
  
  <p>Pure numeric keypad, but can not enter a negative number</p>
  
  <p><a href="https://i.stack.imgur.com/mVCea.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mVCea.png" alt="enter image description here"></a></p>
  
  <p>Is there any solution?</p>