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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 167001 to 168000 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