Datatable demo.

Operate on the table.
Datatabledemo. CS Code
1 Protected   Void Page_load ( Object Sender, eventargs E)
2 {
3 // Use the maketable function below to create a new table.
4 Gridview GD =   New Gridview ();
5 Datatable table;
6 Table = Makenamestable ();
7
8 // Once a table has been created, use
9 // Newrow to create a datarow.
10 Datarow row;
11 Row = Table. newrow ();
12
13 // Then add the new row to the collection.
14 Row [ " Fname " ] =   " John " ;
15 Row [ " Lname " ] =   " Smith " ;
16 Table. Rows. Add (ROW );
17 Datarow row1;
18 Row1 = Table. newrow ();
19 Row1 [ " Fname " ] =   " AA " ;
20 Row1 [ " Lname " ] =   " Bb " ;
21 Table. Rows. Add (row1 );
22
23 Datarow row2 = Table. newrow ();
24 Row2 [ " Fname " ] =   " CC " ;
25 Row2 [ " Lname " ] =   " Dd " ;
26 Table. Rows. Add (row2 );
27
28 Datarow row3 = Table. newrow ();
29 Row3 [ " Lname " ] =   " EE " ;
30 Table. Rows. Add (row3 );
31
32 GD. datasource = Table;
33 GD. databind ();
34
35 Form1.controls. Add (datagrid1 );
36 Form1.controls. Add (GD );
37
38 }
39 Private Datatable makenamestable ()
40 {
41 // Create a new datatable titled 'names .'
42 Datatable namestable =   New Datatable ( " Names " );
43
44 // Add three column objects to the table.
45 Datacolumn idcolumn =   New Datacolumn ();
46 Idcolumn. datatype = System. type. GetType ( " System. int32 " );
47 Idcolumn. columnname =   " ID " ;
48 Idcolumn. autoincrement =   True ;
49 Namestable. Columns. Add (idcolumn );
50
51 Datacolumn fnamecolumn =   New Datacolumn ();
52 Fnamecolumn. datatype = System. type. GetType ( " System. String " );
53 Fnamecolumn. columnname =   " Fname " ;
54 Fnamecolumn. defaultvalue =   " Fname " ;
55 Namestable. Columns. Add (fnamecolumn );
56
57 Datacolumn lnamecolumn =   New Datacolumn ();
58 Lnamecolumn. datatype = System. type. GetType ( " System. String " );
59 Lnamecolumn. columnname =   " Lname " ;
60 Namestable. Columns. Add (lnamecolumn );
61
62 // Create an array for datacolumn objects.
63 Datacolumn [] keys =   New Datacolumn [ 1 ];
64 Keys [ 0 ] = Idcolumn;
65 Namestable. primarykey = Keys;
66
67 // Return the new datatable.
68 Return Namestable;
69 }