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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 193001 to 194000 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