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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 192001 to 193000 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