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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 249001 to 250000 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