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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 223001 to 224000 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