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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...151 152 153 154 155 156 157 158 159 160 ... Item 156001 to 157000 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