New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Accountant	Howard Snyder	USA	1 2 3 4 5
2	Sales Manager	Matti Karttunen	England	1 2 3 4 5
3	Owner	Pascale Cartrain	Argentina	1 2 3 4 5
4	Sales Consultant	Patricio Simpson	England	1 2 3 4 5
5	Sales Manager	Antonio Moreno	USA	1 2 3 4 5
6	Sales Associate	Patricio Simpson	USA	1 2 3 4 5
7	Marketing Manager	Paul Henriot	Brazil	1 2 3 4 5
8	Sales Consultant	Pascale Cartrain	France	1 2 3 4 5
9	Sales Manager	Georg Pipps	Argentina	1 2 3 4 5
10	Sales Agent	Hanna Moos	Germany	1 2 3 4 5
11	Sales Consultant	Paul Henriot	England	1 2 3 4 5
12	Sales Representative	Pascale Cartrain	Brazil	1 2 3 4 5
13	Marketing Manager	Elizabeth Lincoln	France	1 2 3 4 5
14	Accountant	Elizabeth Lincoln	France	1 2 3 4 5
15	Marketing Manager	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
16	Marketing Manager	Pascale Cartrain	Spain	1 2 3 4 5
17	Owner	Hanna Moos	Germany	1 2 3 4 5
18	Sales Consultant	Paul Henriot	USA	1 2 3 4 5
19	Sales Manager	Georg Pipps	USA	1 2 3 4 5
20	Accountant	Pascale Cartrain	Brazil	1 2 3 4 5
21	Accounting Manager	Elizabeth Lincoln	Argentina	1 2 3 4 5
22	Accountant	Jaime Yorres	England	1 2 3 4 5
23	Owner	Matti Karttunen	Germany	1 2 3 4 5
24	Owner	Patricio Simpson	Brazil	1 2 3 4 5
25	Marketing Assistant	Pascale Cartrain	Germany	1 2 3 4 5
26	Sales Associate	Georg Pipps	France	1 2 3 4 5
27	Sales Representative	Pascale Cartrain	Bulgaria	1 2 3 4 5
28	Sales Consultant	Georg Pipps	USA	1 2 3 4 5
29	Sales Representative	Paul Henriot	Italy	1 2 3 4 5
30	Marketing Manager	Hanna Moos	Brazil	1 2 3 4 5
31	Sales Manager	Paul Henriot	Italy	1 2 3 4 5
32	Accountant	Georg Pipps	England	1 2 3 4 5
33	Marketing Manager	Elizabeth Lincoln	Spain	1 2 3 4 5
34	Marketing Assistant	Paul Henriot	England	1 2 3 4 5
35	Sales Agent	Georg Pipps	USA	1 2 3 4 5
36	Marketing Assistant	Matti Karttunen	Germany	1 2 3 4 5
37	Sales Agent	Antonio Moreno	Germany	1 2 3 4 5
38	Marketing Assistant	Pascale Cartrain	France	1 2 3 4 5
39	Marketing Assistant	Howard Snyder	Italy	1 2 3 4 5
40	Sales Agent	Georg Pipps	Italy	1 2 3 4 5
41	Marketing Manager	Antonio Moreno	Austria	1 2 3 4 5
42	Sales Consultant	Georg Pipps	Italy	1 2 3 4 5
43	Sales Consultant	Georg Pipps	Bulgaria	1 2 3 4 5
44	Marketing Manager	Paul Henriot	Spain	1 2 3 4 5
45	Sales Manager	Pascale Cartrain	Austria	1 2 3 4 5
46	Marketing Manager	Pascale Cartrain	Spain	1 2 3 4 5
47	Sales Consultant	Patricio Simpson	Germany	1 2 3 4 5
48	Sales Agent	Georg Pipps	England	1 2 3 4 5
49	Sales Consultant	Paul Henriot	Bulgaria	1 2 3 4 5
50	Sales Agent	Antonio Moreno	Brazil	1 2 3 4 5
51	Sales Associate	Patricio Simpson	Spain	1 2 3 4 5
52	Sales Manager	Hanna Moos	Austria	1 2 3 4 5
53	Marketing Assistant	Paul Henriot	Germany	1 2 3 4 5
54	Owner	Patricio Simpson	France	1 2 3 4 5
55	Marketing Assistant	Jaime Yorres	France	1 2 3 4 5
56	Owner	Pascale Cartrain	Bulgaria	1 2 3 4 5
57	Accounting Manager	Howard Snyder	France	1 2 3 4 5
58	Sales Manager	Elizabeth Lincoln	France	1 2 3 4 5
59	Marketing Manager	Jaime Yorres	Austria	1 2 3 4 5
60	Owner	Hanna Moos	Argentina	1 2 3 4 5
61	Sales Agent	Georg Pipps	Italy	1 2 3 4 5
62	Marketing Assistant	Matti Karttunen	England	1 2 3 4 5
63	Accountant	Georg Pipps	Argentina	1 2 3 4 5
64	Sales Agent	Pascale Cartrain	England	1 2 3 4 5
65	Sales Consultant	Elizabeth Lincoln	France	1 2 3 4 5
66	Sales Manager	Pascale Cartrain	USA	1 2 3 4 5
67	Accountant	Elizabeth Lincoln	France	1 2 3 4 5
68	Sales Representative	Elizabeth Lincoln	France	1 2 3 4 5
69	Sales Consultant	Hanna Moos	Spain	1 2 3 4 5
70	Marketing Assistant	Hanna Moos	Bulgaria	1 2 3 4 5
71	Sales Agent	Jaime Yorres	France	1 2 3 4 5
72	Sales Representative	Paul Henriot	Spain	1 2 3 4 5
73	Accountant	Elizabeth Lincoln	Germany	1 2 3 4 5
74	Sales Manager	Hanna Moos	Bulgaria	1 2 3 4 5
75	Sales Consultant	Elizabeth Lincoln	Brazil	1 2 3 4 5
76	Sales Agent	Hanna Moos	England	1 2 3 4 5
77	Owner	Jaime Yorres	Spain	1 2 3 4 5
78	Sales Agent	Hanna Moos	England	1 2 3 4 5
79	Owner	Georg Pipps	Argentina	1 2 3 4 5
80	Accounting Manager	Antonio Moreno	USA	1 2 3 4 5
81	Owner	Howard Snyder	Spain	1 2 3 4 5
82	Sales Consultant	Pascale Cartrain	Germany	1 2 3 4 5
83	Accountant	Matti Karttunen	Austria	1 2 3 4 5
84	Marketing Assistant	Hanna Moos	USA	1 2 3 4 5
85	Marketing Assistant	Patricio Simpson	Germany	1 2 3 4 5
86	Sales Representative	Jaime Yorres	France	1 2 3 4 5
87	Marketing Manager	Paul Henriot	France	1 2 3 4 5
88	Sales Consultant	Georg Pipps	France	1 2 3 4 5
89	Accounting Manager	Antonio Moreno	Argentina	1 2 3 4 5
90	Marketing Manager	Pascale Cartrain	Argentina	1 2 3 4 5
91	Marketing Assistant	Matti Karttunen	USA	1 2 3 4 5
92	Sales Representative	Matti Karttunen	Germany	1 2 3 4 5
93	Owner	Jaime Yorres	Argentina	1 2 3 4 5
94	Sales Manager	Hanna Moos	USA	1 2 3 4 5
95	Sales Representative	Pascale Cartrain	England	1 2 3 4 5
96	Marketing Assistant	Antonio Moreno	Germany	1 2 3 4 5
97	Sales Consultant	Antonio Moreno	France	1 2 3 4 5
98	Marketing Manager	Georg Pipps	England	1 2 3 4 5
99	Sales Representative	Pascale Cartrain	Italy	1 2 3 4 5
100	Sales Representative	Hanna Moos	France	1 2 3 4 5


...281 282 283 284 285 286 287 288 289 290 ... Item 284001 to 285000 of 300000 Page: of 300 GoPage size:

Sort Ascending
Sort Descending
Clear Sorting
Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

Support & Learning Resources

Find Assistance

Submit a support ticket if you have an active license or trial
Post in the forum if you don't have access to support

Virtualization

Related Resources

Support & Learning Resources

Find Assistance