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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 163001 to 164000 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