title: wpf datatable column name can not have slash /
body: <p>I'm very new to WPF.
  I'm having a very weird issue to just make a table,
  here is the code I have:</p>
  
  <pre><code>DataTable table = new DataTable();
  table.Columns.Add("request/sec", typeof(string));
  DataRow newRow = dataTable.NewRow();
  newRow["request/sec", "na");
  </code></pre>
  
  <p>but it only shows a column name with "request/sec" and an empty row</p>
  
  <p>however, if I do:</p>
  
  <pre><code>DataTable table = new DataTable();
  table.Columns.Add("test(request/sec)", typeof(string));
  DataRow newRow = dataTable.NewRow();
  newRow["test(request/sec)", "na");
  </code></pre>
  
  <p>then it's working, it shows the column name correctly, and a row with value "na"</p>
  
  <p>I have no idea why this is happening, I know it sounds ridiculously.
  Can anyone help?</p>
  
  <p>note: I also tried "//", "/", "\/", @
  I can not hardcoded the column names, it's dynamic generated by certain logic, I used the above code as examples</p>