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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 13001 to 14000 of 300000 Page: of 300 GoPage size:

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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>

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