Hi @JavRR ,
Glad to know that it is useful to you
You could try below expression to get what you wanted to.
HTMLBodyStr="<table border=2><b><tr><td>"+String.Join("</td><td>",TestDt.Columns.Cast(Of DataColumn).Select(Function (x) x.ColumnName).ToArray)+"</td></tr></b>"+
"<tr>"+String.Join("</tr><tr>",(From x In TestDt.AsEnumerable
Let cells="<td>"+String.Join("</td><td>",x.ItemArray)+"</td>"
Select cells).ToArray)+"</tr>"
Thanks,