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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...151 152 153 154 155 156 157 158 159 160 ... Item 151001 to 152000 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