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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 33001 to 34000 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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