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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 40001 to 41000 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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