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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 263001 to 264000 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