<div>
dtAddPatient.Columns.Add(&quot;<wbr />dcPatientL<wbr />astName&quot;, typeof(string));<br />
<br />
...that should do it
</div>


<div>
Thanks, but still getting the same errors.
</div>


<div>
Yikes... my fault: the format in my original post worked, but the error isn't removed until I actually rebuild the solution. &nbsp;I'm new to C#... in VB.NET the design-time errors were removed right away without having to rebuild.<br />
Anyway, it seems to be working. &nbsp;I'll give you the points for trying to help out.<br />
Thanks
</div>


<div>
<div class="content wysiwyg-content">
Hi,<br />
<br />
I am trying to add DataColumns to a DataTable in c# (vs 2005):<br />
<br />
dtAddPatient.Columns.Add(&quot;<wbr />dcPatientL<wbr />astName&quot;, System.Type.GetType(&quot;Syste<wbr />m.String&quot;)<wbr />);<br />
<br />
The whole line is underlined. &nbsp;There are 2 errors:<br />
1) When hovering over the column name: Argument '1': Cannot convert from 'System.Data.DataColumn' to 'string'.<br />
2) When hoving over the rest of the line: The best overloaded method match for 'System.Data.DataColumnCol<wbr />lection.Ad<wbr />d(string, System.Type)' has some invalid arguments.<br />
<br />
I've seen it done like this elsewhere, so I don't have an idea what I'm doing wrong.<br />
Appreciate any help!
</div>
</div>


Hi,

I am trying to add DataColumns to a DataTable in c# (vs 2005):

dtAddPatient.Columns.Add("dcPatientLastName", System.Type.GetType("System.String"));

The whole line is underlined.  There are 2 errors:
1) When hovering over the column name: Argument '1': Cannot convert from 'System.Data.DataColumn' to 'string'.
2) When hoving over the rest of the line: The best overloaded method match for 'System.Data.DataColumnCollection.Add(string, System.Type)' has some invalid arguments.

I've seen it done like this elsewhere, so I don't have an idea what I'm doing wrong.
Appreciate any help!

dtAddPatient.Columns.Add(&quot;dcPatientLastName&quot;, typeof(string));

...that should do it

Thanks, but still getting the same errors.

Yikes... my fault: the format in my original post worked, but the error isn&#39;t removed until I actually rebuild the solution.  I&#39;m new to C#... in VB.NET the design-time errors were removed right away without having to rebuild.
Anyway, it seems to be working.  I&#39;ll give you the points for trying to help out.
Thanks

Question about adding DataColumn to DataTable

Hi,

I am trying to add DataColumns to a DataTable in c# (vs 2005):

dtAddPatient.Columns.Add(&quot;dcPatientLastName&quot;, System.Type.GetType(&quot;System.String&quot;));

The whole line is underlined.  There are 2 errors:
1) When hovering over the column name: Argument &#39;1&#39;: Cannot convert from &#39;System.Data.DataColumn&#39; to &#39;string&#39;.
2) When hoving over the rest of the line: The best overloaded method match for &#39;System.Data.DataColumnCollection.Add(string, System.Type)&#39; has some invalid arguments.

I&#39;ve seen it done like this elsewhere, so I don&#39;t have an idea what I&#39;m doing wrong.
Appreciate any help!

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