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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...151 152 153 154 155 156 157 158 159 160 ... Item 157001 to 158000 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