Combining handlers...

I have:

Private Sub txtMileage_Validated(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtMileage.Validated
 
      Dim strVal = txtMileage.Text
.
.  
      txtMileage.Focus()
.
.
I want to turn this to handle 2 more text box entries, some thing like:

Private Sub txtMileage_Validated(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtMileage.Validated, txtMiles.Validated, txtGas.Validated  '<--????
 
      Dim strVal = sender.Text    '<---????
.
.
     sender.Focus()   '<--- ?????

But I am not sure about the syntax of my code marked with '<--- ?????

Question: What is the correct syntax to accomplish this.

Also, what is the difference between Validated and Validating events and their use?

Thank you