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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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