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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 172001 to 173000 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