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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 197001 to 198000 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