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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 183001 to 184000 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