<p>I have a DataSet which I get a DataTable from that I am being passed back from a function call. It has 15-20 columns, however I only want 10 columns of the data.</p>

<p>Is there a way to remove those columns that I don't want, copy the DataTable to another that has only the columns defined that I want or is it just better to iterate the collection and just use the columns I need.</p>

<p>I need to write the values out to a fixed length data file.</p>

Aside from limiting the columns selected to reduce bandwidth and memory:
```
```
DataTable t;
t.Columns.Remove("columnName");
t.Columns.RemoveAt(columnIndex);
```
```