sqldata tipe bit
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/4152611/sql-data-type-bit">sql data type bit </a>  </p>
</blockquote>



<p>I wrote like this, and the value in data base is NULL,if( dr[2] != System.DBNull.Value) and this the answer "Object cannot be cast from DBNull to other types."</p>
