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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 94001 to 95000 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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