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


...231 232 233 234 235 236 237 238 239 240 ... Item 235001 to 236000 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