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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 90001 to 91000 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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