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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 51001 to 52000 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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