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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 141001 to 142000 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