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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 170001 to 171000 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