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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 38001 to 39000 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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