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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 163001 to 164000 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