>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

You can try Table.Columns.Contains(columnnameToTest), which returns a Boolean.

Here's an example....the first one returns true, the second one false

DataTable dt = new DataTable();
dt.Columns.Add("Column1", typeof(System.String));

MessageBox.Show( dt.Columns.Contains("Column1").ToString());
MessageBox.Show(dt.Columns.Contains("Column2").ToString());