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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 131001 to 132000 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