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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 160001 to 161000 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