we all know well that the DataGrid is used for database work.we
can use DataGrid contorl to show data from database tables.
but it's that the new version of the DataGrid control in the c#
language and Vb.net is able to show any other objects
of classes which implements IList interface.

if you are participating in a project of a
course,assignment,others on c#.net or asp.net
or may be others then you should follow the
steps for finishing the project successfully.

It's a professional logic to use the databaseOwner
and objectQualifier values when creating tables
else you will not be able to identify the tables
in databases with ease and gain other benefits of it.

in asp.net application or website </appSettings>
section in web.config is used to store application
setting to be used.you can keep settings in this
section as -

if you placed datalist command buttons as -

<asp:DataList ID="DataList1" DataKeyField="CommentId" runat="server"
OnItemCommand="DataList1_ItemCommand">
<ItemTemplate>
<asp:LinkButton ID="Edit" Text="Select" CommandName="Edit" runat="server" />
<asp:LinkButton ID="delete" Text="Approve" CommandName="Delete" runat="server" />
.......

this post will show how to create a file in dotnetnuke module
directory and write some data in the file.you can use this
technique in asp.net application too -