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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...151 152 153 154 155 156 157 158 159 160 ... Item 158001 to 159000 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