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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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