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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 235001 to 236000 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