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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 143001 to 144000 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