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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 227001 to 228000 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