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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 149001 to 150000 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