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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...151 152 153 154 155 156 157 158 159 160 ... Item 159001 to 160000 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