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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 66001 to 67000 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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