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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 169001 to 170000 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