title: Textbox text change
body: <p>I am having two Textboxes and when ever I enter the value in the Textbox one I need to get text in to Textbox two based on the validation of the Texbox one.</p>
  
  <p>If I enter value 1 in Textbox one it has to check the databse and get the corresponding value for that particular value 1.</p>
  
  <p>If I enter UseerId I need to get the corresponding UserName from the database on text changed of the Textbox one.</p>
  
  <p>Thanks in advance...</p>
  
  <p>I am using ASP.net and the simple logic is when ever I enter the userid ineed to get username in another textbox ehern the focus is lost from the first textbox from the databse..</p>