title: How to change 6 digit number into Date String
body: <p>So, I've found this thread, which talks about my issue exactly, however the solution doesn't work for me: <a href="https://stackoverflow.com/questions/21749542/how-to-change-format-column-in-datagridview-to-date-type-for-this-value">How to Change Format column in Datagridview to date type for this value</a></p>
  
  <p>I've got a different number patter, in which my data is: YYMMDD, just 6 numerical digits (000901 - September 1st, 2000)</p>
  
  <p>Does the data structure make a difference when converting it to a data string? Does it need to be in an initial format?</p>
  
  <p>This is my current string of code:</p>
  
  <p><code>DataGridView1.Columns(1).DefaultCellStyle.Format = "yy/MM/dd"</code></p>
  
  <p>Just trying to get any format what-so-ever, but it just remains as 6 digits.</p>