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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 50001 to 51000 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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