>Hi,
>
>What is the fastest (or an efficient) method to find out if a dataset (not strongly typed) has a column; by name. For example; I have a dataset MyDataSet (created by loading an XML file) and I want to find out if the dataset has column MyColumn.
>
>TIA

Check

http://msdn.microsoft.com/en-us/library/system.data.datacolumncollection.contains(v=vs.110).aspx

Contains method for columns collection.