<div>
use IsDbNull method, check:<br />
<a href="http://stackoverflow.com/questions/222834/handling-dbnull-data-in-vb-net" rel="ugc">http://stackoverflow.com/questions/222834/handling-dbnull-data-in-vb-net</a><br />
<br />
Note: is dt a datatable? Please provide more code
</div>


use IsDbNull method, check:
http://stackoverflow.com/questions/222834/handling-dbnull-data-in-vb-net [http://stackoverflow.com/questions/222834/handling-dbnull-data-in-vb-net]

Note: is dt a datatable? Please provide more code

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<div class="content wysiwyg-content">
This line is giving me, &quot;Conversion from type 'DBNull' to type 'String' is not valid.&quot;<br />
<br />
&nbsp; &nbsp; &nbsp; strString = dt.Compute(&quot;SUM(Column1)&quot;,<wbr /> String.Empty)<br />
<br />
How do I check for DBNull in a dataset?<br />
<br />
<br />
Thank you.<br />
<br />

</div>
</div>


This line is giving me, "Conversion from type 'DBNull' to type 'String' is not valid."

      strString = dt.Compute("SUM(Column1)", String.Empty)

How do I check for DBNull in a dataset?


Thank you.



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