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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 218001 to 219000 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