Operator '==' incompatible with operand types 'Boolean?' and 'String'
<p>I was able to use where clause like the first one. But I get an error message when I tried to add "IS_SUBMITTED == FALSE". What do I do? IS_SUBMITTED  is boolean type.</p>

<p>(Working)</p>

<pre><code>    dsRequestList.Where = @"REQUEST_DETAIL_TYPE_ID.Contains(""" + RequestID + @""") AND  
APPROVAL_GROUP_ID.Contains(""" + ApprovalID + @""")  AND CREATE_DT &gt;= DateTime.Parse(""" + 
FromDate + @""") AND CREATE_DT &lt;= DateTime.Parse(""" + ToDate + @""")";
</code></pre>

<p>(Error)
        dsRequestList.Where = @"IS_SUBMITTED == """ + "False" + @""" AND 
    REQUEST_DETAIL_TYPE_ID.Contains(""" + RequestID + @""") AND  APPROVAL_GROUP_ID.Contains(""" 
    + ApprovalID + @""")  AND CREATE_DT >= DateTime.Parse(""" + FromDate + @""") AND CREATE_DT 
    &lt;= DateTime.Parse(""" + ToDate + @""")";</p>
