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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 171001 to 172000 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