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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 229001 to 230000 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