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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 141001 to 142000 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