Basic use of DataView

A Dataview enables you to create different views of the data stored in a DataTable, a capability that is often used in data-binding applications. Using a DataView, you can expose the data in a table with different sort orders, and you can filter the data by row state or based on a filter expression.

Dataview provides a dynamic view for a datatable. Using dataview we can perform following operation:

· Sorting the table

· Add, modify, delete the data

· Filtering data from table

Creating Dataview object as
Dataview dv=new Dataview();

How to use Sort property of Dataview

DataView dv = DataTable1.DefaultView;

dv.Sort = "username, email DESC";

Filtering in Dataview
DataView dv = new DataView(datatable1,"joindate >= 01/01/2010", DataViewRowState.CurrentRows);

refer the below link

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Kunal Vaishya14y ago
Dear

main benefit of dataview to filter records and do operation on you can also convert in to table or else
R ACHUTHA14y ago
A Dataview enables you to create different views of the data stored in a DataTable, a capability that is often used in data-binding applications. Using a DataView, you can expose the data in a table with different sort orders, and you can filter the data by row state or based on a filter expression.
Dataview provides a dynamic view for a datatable. Using dataview we can perform following operation:
·         Sorting the table
·         Add, modify, delete the data
·         Filtering data from table
Example:
Creating Dataview object as
Dataview dv=new Dataview();
How to use Sort property of Dataview
DataView dv = DataTable1.DefaultView;
dv.Sort = "username, email DESC";
Filtering in Dataview
DataView dv = new DataView(datatable1,"joindate >= 01/01/2010",   DataViewRowState.CurrentRows);

refer the below link
http://www.c-sharpcorner.com/UploadFile/rohatash/ado-net-dataview-in-Asp-Net/