主题：如何删除使用add方法增加的临时列

Dim lst As New List(of String)

For Each c As DataCol in DataTables("XXX").DataCols

     if c.Name.StartsWith("dc") Then

        lst.Add(c.name)

     end if

Next

For Each nm As String in lst

   DataTables("xxx").Datacols.Delete(nm)

next