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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 218001 to 219000 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