Is there a difference between DataTable.Clear and DataTable.Rows.Clear?

Question

I recall there is a difference between some methods/properties called directly on the DataTable class, and the identically named methods/properties on the DataTable.Rows pro

Answer 1

I don't believe that DataTable.Clear does clear columns. This code writes "1" to standard output:

var d = new DataTable();
d.Columns.Add("Hello", typeof(string));
d.Clear();
Console.WriteLine(d.Columns.Count);