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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 226001 to 227000 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