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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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