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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 265001 to 266000 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