title: How to remove one datatable rows based on another datatable in .net?
body: <p>I have one data table named <code>dtFirst</code> as shown below </p>
  
  <pre><code>Fieldname              Newvalue
  
  antenastructure        12
  slno                   2
  servicelevel
  powersupply
  </code></pre>
  
  <p>another data table as <code>dtMaster</code></p>
  
  <pre><code>Mastertabe          Masterfield          infoid      zvalue     qvalue
  
  M_seq               antenastructure       123          
  M_seq               slno                  1      
  M_seq               servicelevel          133
  M_seq               powersupply           154
  M_seq               azimheight            124
  </code></pre>
  
  <p>What i want is i want to remove rows from <code>dtMaster</code> if <code>Fieldname</code>   of   <code>dtFirst</code> doesn't contain  <code>Newvalue</code>    ie here i want to remove   rows contains <code>servicelevel</code> and  <code>powersupply</code>.These two are big data table out of which i am posting small part</p>