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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 168001 to 169000 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