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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 144001 to 145000 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