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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 296001 to 297000 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