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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 236001 to 237000 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