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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 140001 to 141000 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