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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 212001 to 213000 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