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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 176001 to 177000 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