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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 173001 to 174000 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