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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 145001 to 146000 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