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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 244001 to 245000 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