title: VB.NET How to detect which textbox is active and insert data on it
body: <p>Welcome</p>
  
  <p>I have 3 textboxes and one button</p>
  
  <p>When I click on this button , I want to check which textbox is active , the cursor of mouse is on it and put the data on these text box</p>
  
  <p>For Example in my button it will check which one is active and put data ( anything ) on it</p>
  
  <p>I need your help</p>
  
  <p>Thanks</p>