How to change field type in DataSet.DataTable.DataColumn object?

I have a DataSet object and ReadXml was executed. Now I have a DataTable object but one of its columns has an incorrect type, because of this xml was created in an another application (string, instead of System.Guid). Is it possible to change the column type, considering that column has data? I need to do this, as I want to Merge two DataTable's.
[349 byte] By [cosmmm] at [2007-12-26]
# 1

You should take care of column types before you load that XML by loading/creating DataSet's schema first.

And, by the way, your column is of correct type - String. All columns are of type String if schema inference is used to load XML.

Using inference is a very bad practice - it's slow, loses column types and often produces unpredictable results.

IlyaTumanov at 2007-9-4 > top of Msdn Tech,Smart Device Development,.NET Compact Framework...