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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 134001 to 135000 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