title: How to check if datarow exists in datable without using primary key method
body: <p>I am using VB .NET and I want to check if a Datarow (Row A) from a Datatable(Table A) exists in another datatable (Table B).</p>
  
  <p>I had tried using the code below:</p>
  
  <pre><code>TableA.Rows.Contains(RowA)
  </code></pre>
  
  <p>I got an error message stating:
  "MissingPrimaryKeyException was unhandled by user code. Table does not have a primary key".</p>
  
  <p>Could you suggest how can I search a datarow in a datatable without using primary key method?</p>
  
  <p>Thank you. </p>