title: VBA String concatenation
body: <p>Is there any Java-like solution for concatenatin strings in VBA?</p>
  
  <p>I want to use a MsgBox in a way like this:</p>
  
  <pre><code>...
  Set UT = Workbooks(dropdownValue).Worksheets(1)
  With UT
         UT_rows = .Cells(3, 15).End(xlDown).Row
  End With
  MsgBox "Rows of the file: " + UT_rows
  </code></pre>
  
  <p>But when I do that, my code hangs up at this point. (incompatible Types)</p>