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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 172001 to 173000 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