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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 162001 to 163000 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